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Simplified and rapid determination of polychlorinated biphenyls, polybrominated diphenyl ethers, and polycyclic aromatic hydrocarbons in fish and shrimps integrated into a single method 2011 Institute of Chemical Technology, Prague, Faculty of Food and Biochemical Technology, Department of Food Chemistry and Analysis, Prague, Czech Republic.
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Print(0)
Ref Type
Journal Article
Periodical, Full
Analytica Chimica Acta
Periodical, Abbrev.
Anal.Chim.Acta
Pub Date Free Form
30-Nov
Volume
707
Issue
2-Jan
Start Page
84
Other Pages
91
Notes
LR: 20131121; CI: Copyright (c) 2011; JID: 0370534; 0 (Halogenated Diphenyl Ethers); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); DFC2HB4I0K (Polychlorinated Biphenyls); 2011/07/18 [received]; 2011/09/13 [revised]; 2011/09/14 [ac
Place of Publication
Netherlands
ISSN/ISBN
1873-4324; 0003-2670
Accession Number
PMID: 22027123
Language
eng
SubFile
Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.aca.2011.09.016 [doi]
Output Language
Unknown(0)
PMID
22027123
Abstract
In this study, a new rapid and flexible method for the simultaneous determination of 18 key representatives of polychlorinated biphenyls (PCBs), 7 polybrominated diphenyl ethers (PBDEs), and 32 polycyclic aromatic hydrocarbons (PAHs) in fish and shrimps by gas chromatography coupled to mass spectrometry (GC-MS) was developed and validated. A substantial simplification of sample processing prior to quantification step was achieved: after addition of water to homogenized sample, transfer of hydrophobic analytes into ethyl acetate was supported by added inorganic salts. Bulk fat, contained in crude organic extract obtained by partition, was subsequently removed on a silica minicolumn. This approach enabled to process six samples in less than 1h; moreover, the volume of an extraction solvent and consumption of other chemicals can be significantly reduced compared to, e.g., traditional Soxhlet extraction followed by gel permeation chromatography. The recoveries of target analytes were in the range of 73-120% even at the lowest spiking level (1 mug kg(-1)), repeatabilities (relative standard deviations, RSDs) ranged from 1 to 20%. Under optimized GC-MS conditions (time-of-flight mass analyzer, TOF), the limits of quantification (LOQs) were as follows: PCBs 0.1-0.5 mug kg(-1), PBDEs 0.5 mug kg(-1), and PAHs 0.05-0.25 mug kg(-1). Ambient mass spectrometry employing a direct analysis in real time (DART) ion source was shown as an effective tool for fat control in extract, which is needed during the method development and examination of unknown samples prior to the analysis. Further extension of a method scope by other similar analytes is easily possible.
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Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Kalachova,K., Pulkrabova,J., Drabova,L., Cajka,T., Kocourek,V., Hajslova,J.
Original/Translated Title
URL
Date of Electronic
20110919
PMCID
Editors
Novel unbreakable solid-phase microextraction fiber by electrodeposition of silica sol-gel on gold 2011 Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, Tehran, Iran. bagheri@sharif.edu
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of separation science
Periodical, Abbrev.
J.Sep.Sci.
Pub Date Free Form
Nov
Volume
34
Issue
22
Start Page
3246
Other Pages
3252
Notes
CI: Copyright (c) 2011; JID: 101088554; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Polymers); 0 (Water Pollutants, Chemical); 60650-90-0 (Silica Gel); 7440-57-5 (Gold); 2011/04/22 [received]; 2011/08/13 [revised]; 2011/08/15 [accepted]; 2011/10/26 [aheadof
Place of Publication
Germany
ISSN/ISBN
1615-9314; 1615-9306
Accession Number
PMID: 22028302
Language
eng
SubFile
Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1002/jssc.201100367 [doi]
Output Language
Unknown(0)
PMID
22028302
Abstract
A new technique for preparation of an unbreakable solid-phase microextraction (SPME) fiber, using sol-gel technology is developed. Primarily, an ultrathin two-dimensional intermediate film was prepared by hydrolysis of 3-(trimethoxysilyl)-1-propanthiol self-assembled monolayer grafted onto gold, then a stationary phase by electrodeposition of 3-(trimethoxysilyl)propylmethacrylate as a precursor, tetramethyl orthosilicate and polyethylene glycol as a coating polymer was produced. The scanning electron microscopy images revealed that the new fiber exhibits a rather porous and homogenous surface. The thermal stability of the fabricated fiber was investigated by thermogravimetric analysis. The applicability of the prepared fiber coating in conjunction with gas chromatography-mass spectrometry was examined by SPME of polycyclic aromatic hydrocarbons, as model analytes, from aquatic media. An extraction time of 20 min at 50 degrees C gave maximum peak areas when NaCl, 15% was added to the aqueous samples. Limits of detection were in the range of 0.01-0.02 ng/mL and relative standard deviation values were in the range of 4-16% at 1 ng/mL. The developed method was successfully applied for the analysis of real water samples while the relative recovery percentage was in the range of 102-118%.
Descriptors
Adsorption, Gold/chemistry, Polycyclic Hydrocarbons, Aromatic/analysis/isolation & purification, Polymers/chemistry, Porosity, Silica Gel/chemistry, Solid Phase Microextraction/instrumentation/methods, Water Pollutants, Chemical/analysis/isolation & purification
Links
Book Title
Database
Publisher
WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Data Source
Authors
Bagheri,H., Sistani,H., Ayazi,Z.
Original/Translated Title
URL
Date of Electronic
20111026
PMCID
Editors
Prevalence of smokeless tobacco use among Canadian youth between 2004 and 2008: findings from the Youth Smoking Survey 2011 Propel Centre for Population Health Impact, Canadian Cancer Society/University of Waterloo, Waterloo, ON.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Canadian journal of public health = Revue canadienne de sante publique
Periodical, Abbrev.
Can.J.Public Health
Pub Date Free Form
Sep-Oct
Volume
102
Issue
5
Start Page
358
Other Pages
363
Notes
LR: 20130605; JID: 0372714; ppublish
Place of Publication
Canada
ISSN/ISBN
0008-4263; 0008-4263
Accession Number
PMID: 22032102
Language
eng
SubFile
Journal Article; IM
DOI
Output Language
Unknown(0)
PMID
22032102
Abstract
OBJECTIVES: The current study team sought to understand smokeless tobacco (SLT) usage trends among youth, using nationally representative data collected as part of the Canadian Youth Smoking Survey (YSS) between 2004 and 2008. METHODS: Descriptive analyses of SLT ever use among respondents in grades 6 to 9 were examined according to year of data collection (2008, n = 31,249; 2006, n = 34,050; and 2004, n = 23,362). Using the 2008 data from respondents in grades 6 to 12 (n = 51,922), logistic regression models were used to examine characteristics associated with SLT ever use and current use. RESULTS: Between 2004 and 2008, the prevalence of youth in grades 6 to 9 reporting they have ever tried SLT significantly decreased by 30.8%. In 2008, male students were more likely than females to have tried SLT (OR 4.87, 95% CI 4.34-5.45) or to currently use SLT (OR 4.96, 95% CI 4.12-5.96). There are regional differences in prevalence of SLT use across Canada, with the highest rates in western provinces and the lowest in Quebec. Current smokers were also more likely to use SLT (OR 11.86, 95% CI 10.22-13.76) compared to non-smokers. Older students are more likely to report ever use or current use of SLT. CONCLUSION: The findings from this study demonstrate that in Canada, adolescent SLT use is primarily an issue with males and there are significant regional differences. Ongoing monitoring of SLT is encouraged considering the tobacco industry's recent investments and product development and increased use in countries like the United States.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Kennedy,R.D., Leatherdale,S.T., Burkhalter,R., Ahmed,R.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Electronic nicotine delivery systems: adult use and awareness of the 'e-cigarette' in the USA 2013 Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta 30341, USA.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Tobacco control
Periodical, Abbrev.
Tob.Control
Pub Date Free Form
Jan
Volume
22
Issue
1
Start Page
19
Other Pages
23
Notes
LR: 20151119; JID: 9209612; 6M3C89ZY6R (Nicotine); 2011/10/27 [aheadofprint]; 2011/11/28 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1468-3318; 0964-4563
Accession Number
PMID: 22034071
Language
eng
SubFile
Journal Article; IM
DOI
10.1136/tobaccocontrol-2011-050044 [doi]
Output Language
Unknown(0)
PMID
22034071
Abstract
BACKGROUND: Electronic nicotine delivery systems (ENDS), also referred to as electronic cigarettes or e-cigarettes, were introduced into the US market in 2007. Despite concerns regarding the long-term health impact of this product, there is little known about awareness and use of ENDS among adults in the USA. METHODS: A consumer-based mail-in survey (ConsumerStyles) was completed by 10,587 adults (>/= 18 years) in 2009 and 10,328 adults in 2010. Data from these surveys were used to monitor awareness, ever use and past month use of ENDS from 2009 to 2010 and to assess demographic characteristics and tobacco use of ENDS users. RESULTS: In this US sample, awareness of ENDS doubled from 16.4% in 2009 to 32.2% in 2010 and ever use more than quadrupled from 2009 (0.6%) to 2010 (2.7%). Ever use of ENDS was most common among women and those with lower education, although these were not the groups who had heard of ENDS most often. Current smokers and tobacco users were most likely to try ENDS. However, current smokers who had tried ENDS did not say they planned to quit smoking more often than smokers who had never tried them. CONCLUSIONS: Given the large increase in awareness and ever use of ENDS during this 1-year period and the unknown impact of ENDS use on cigarette smoking behaviours and long-term health, continued monitoring of these products is needed.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Regan,A.K., Promoff,G., Dube,S.R., Arrazola,R.
Original/Translated Title
URL
Date of Electronic
20111027
PMCID
Editors
Prevalence, frequency, and initiation of hookah tobacco smoking among first-year female college students: a one-year longitudinal study 2012 Center for Health and Behavior, Syracuse University, NY 13244, United States. rlfielde@syr.edu
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Addictive Behaviors
Periodical, Abbrev.
Addict.Behav.
Pub Date Free Form
Feb
Volume
37
Issue
2
Start Page
221
Other Pages
224
Notes
LR: 20150129; CI: Copyright (c) 2011; GR: R21 AA018257/AA/NIAAA NIH HHS/United States; GR: R21 AA018257-01/AA/NIAAA NIH HHS/United States; GR: R21-AA018257/AA/NIAAA NIH HHS/United States; JID: 7603486; NIHMS331411; OID: NLM: NIHMS331411; OID: NLM: PMC3230
Place of Publication
England
ISSN/ISBN
1873-6327; 0306-4603
Accession Number
PMID: 22037255
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.1016/j.addbeh.2011.10.001 [doi]
Output Language
Unknown(0)
PMID
22037255
Abstract
Hookah tobacco smoking has become increasingly prevalent among college students, but little is known about frequency of use or patterns of use over time, including during the transition to college. The goals of this longitudinal cohort study were to assess the: (a) lifetime prevalence, (b) current prevalence, (c) frequency of use, and (d) pattern of initiation of hookah tobacco smoking among female students during the first year of college. First-year female college students (N=483) at a large private university in upstate New York completed 13 monthly online surveys about their hookah tobacco use from August 2009 to August 2010. Lifetime prevalence of hookah use increased from 29% at college entry to 45% at one-year follow-up. The highest rates of hookah initiation occurred in the first two months of students' first semester of college. Current (past 30 days) hookah use ranged from 5% to 13% during the year after college entry. On average, hookah users reported smoking hookah two days per month. Hookah tobacco use is common among female college students. The transition to college is a vulnerable time for hookah initiation. Preventive efforts should begin in high school and continue through college, with a focus on students' first few months on campus.
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ltd
Data Source
Authors
Fielder,R.L., Carey,K.B., Carey,M.P.
Original/Translated Title
URL
Date of Electronic
20111013
PMCID
PMC3230723
Editors
Water pipe and smokeless tobacco use among medical students in South Africa 2012 Department of Public Health Medicine, School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa. fsenkubuge@gmail.com
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
Periodical, Abbrev.
Nicotine Tob.Res.
Pub Date Free Form
Jun
Volume
14
Issue
6
Start Page
755
Other Pages
760
Notes
LR: 20151119; JID: 9815751; 2011/10/29 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1469-994X; 1462-2203
Accession Number
PMID: 22039073
Language
eng
SubFile
Journal Article; IM
DOI
10.1093/ntr/ntr211 [doi]
Output Language
Unknown(0)
PMID
22039073
Abstract
INTRODUCTION: This study sought to determine the sociodemographic and behavioral factors associated with water pipe and smokeless tobacco (SLT) use among a population of medical students in the Pretoria area, South Africa. METHODS: Undergraduate medical students (N = 722) in their 2nd and 6th year of study in 2 medical schools in South Africa completed a self-administered questionnaire during 2008. Information on ever and current use of water pipe and SLT was obtained along with information on sociodemographic variables, alcohol use, and cigarette smoking status. Multiple logistic regression analysis were used to determine factors associated with current use of water pipe and SLT. RESULTS: The mean age of study participants was 23 years. Of the participants, 53% were female and 55% were self-identified as Black Africans. Of the study participants, 18.6% were current water pipe users, 3.1% were current SLT users, while 17.3% were current cigarette smokers. Factors independently associated with current water pipe use were having an alcohol drinking-problem (odds ratio [OR] = 2.43; 95% CI = 1.48-3.40), currently smoking cigarettes (3.40; 2.04-5.67), and reporting exposure to smoking in places other than home (2.51; 1.29-4.90). Compared with Black students, White medical students were more likely to have smoked a water pipe in the past month (3.14; 1.74-5.70) but less likely to have ever used SLT (0.37; 0.19-0.73). CONCLUSIONS: These findings suggest that the use of alternative tobacco products is common among South African medical students and may form part of a pattern of risk-taking behavior. Furthermore, there appear to be cultural differences in the use of certain tobacco products.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Senkubuge,F., Ayo-Yusuf,O.A., Louwagie,G.M., Okuyemi,K.S.
Original/Translated Title
URL
Date of Electronic
20111029
PMCID
Editors
Cigarette smoking and its association with overlapping gastroesophageal reflux disease, functional dyspepsia, or irritable bowel syndrome 2011 Department of Gastroenterology, Osaka City University Graduate School of Medicine, Japan. yasu@med.osaka-cu.ac.jp
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Internal medicine (Tokyo, Japan)
Periodical, Abbrev.
Intern.Med.
Pub Date Free Form
Volume
50
Issue
21
Start Page
2443
Other Pages
2447
Notes
LR: 20151119; JID: 9204241; 2011/11/01 [epublish]; ppublish
Place of Publication
Japan
ISSN/ISBN
1349-7235; 0918-2918
Accession Number
PMID: 22041340
Language
eng
SubFile
Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
JST.JSTAGE/internalmedicine/50.6012 [pii]
Output Language
Unknown(0)
PMID
22041340
Abstract
BACKGROUND: Gastroesophageal reflux disease (GERD), functional dyspepsia (FD), and irritable bowel syndrome (IBS) are common gastrointestinal diseases. Several studies have shown a significant occurrence of overlap among these 3 diseases. The purpose of this study was to examine the factors associated with such disease overlap in Japanese adults. METHODS: We performed a cross-sectional study on Japanese workers who visited a clinic for a routine health check-up and asked them to fill out a self-report questionnaire. GERD was defined as episodes of heartburn and/or acid regurgitation at least once a week, and the diagnosis of FD and IBS was based on Rome III criteria. A logistic regression model was used to identify risk factors, and odds ratio (OR) was calculated with 95% confidence intervals (CIs). RESULTS: Disease overlaps were found in 160 (6.0%) of the 2680 eligible subjects. Female gender was associated with GERD + IBS (OR=1.99; 95% CI, 1.06-3.75), and FD + IBS (OR=1.72; 95% CI, 1.03-2.85), and lower body mass index was negatively associated with FD + IBS (OR=0.54; 96% CI, 0.34-0.87). Cigarette smoking was a common factor associated with the overlaps: GERD + FD (OR=2.14; 95% CI, 1.22-3.76), GERD + IBS (OR=3.16; 95% CI, 1.75-3.71), FD + IBS (OR=2.26; 95% CI, 1.40-3.66), and GERD + FD + IBS (OR=4.08; 95% CI, 1.66-10.07). The associations between smoking habits and overlaps were stronger in smokers who smoked >/=1 pack per day as compared to those who smoked
Descriptors
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Book Title
Database
Publisher
Data Source
Authors
Fujiwara,Y., Kubo,M., Kohata,Y., Machida,H., Okazaki,H., Yamagami,H., Tanigawa,T., Watanabe,K., Watanabe,T., Tominaga,K., Arakawa,T.
Original/Translated Title
URL
Date of Electronic
20111101
PMCID
Editors
Prevalence of the drug consumption among Chilean university students 2011 Departamento de Farmacologia, Facultad de Ciencias Biologicas, Universidad de Concepcion, Concepcion, Chile. jsepulve@udec.cl
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Revista medica de Chile
Periodical, Abbrev.
Rev.Med.Chil.
Pub Date Free Form
Jul
Volume
139
Issue
7
Start Page
856
Other Pages
863
Notes
LR: 20151119; JID: 0404312; 0 (Street Drugs); 2011/09/16 [aheadofprint]; ppublish
Place of Publication
Chile
ISSN/ISBN
0717-6163; 0034-9887
Accession Number
PMID: 22051822
Language
spa
SubFile
English Abstract; Journal Article; IM
DOI
/S0034-98872011000700005 [doi]
Output Language
Unknown(0)
PMID
22051822
Abstract
BACKGROUND: Drug abuse is one of the main public health problems and mostly involves young people. AIM: To determine the prevalence of drug consumption among university students and its associated social factors. MATERIAL AND METHODS: A questionnaire exploring consumption of drugs and social-demographic, economic and religious variables, was applied to 1577 third year students aged 22 +/- 2 years (54% females) of a public university. RESULTS: Sixty eight percent of the students were of middle socioeconomic class, 71 % belonged to some religion and 29% declared themselves as agnostic. Ninety six percent drank alcohol at least once and 29% never smoked. Among illicit drugs, marijuana was consumed by 22% followed by cocaine in 5.3%o, hallucinogenic drugs in 2.6 % >, inhalants in 2.3% > and cocaine free base in 1.4%). Six percent consumed stimulants and 13.8%>, sedatives. A higher economic income facilitated drug consumption and the adscription to a religion was protective against it. CONCLUSIONS: Alcohol is the most commonly consumed drug, and is the substance that generates more problems to students.
Descriptors
Age of Onset, Alcohol Drinking/epidemiology, Chile, Cross-Sectional Studies, Female, Humans, Male, Prevalence, Religion, Smoking/epidemiology, Socioeconomic Factors, Street Drugs/supply & distribution, Students/statistics & numerical data, Substance-Related Disorders/epidemiology, Surveys and Questionnaires, Universities, Young Adult
Links
Book Title
Database
Publisher
Data Source
Authors
Sepulveda,C. M. J., Roa,S. J., Munoz,R. M.
Original/Translated Title
Estudio cuantitativo del consumo de drogas y factores sociodemograficos asociados en estudiantes de una universidad tradicional chilena
URL
Date of Electronic
20110916
PMCID
Editors
2-(5-Bromo-pyridin-3-yl)-5-[3-(4,5,6,7-tetra-hydro-thieno[3,2-c]pyridine-5-ylsulf on-yl)thio-phen-2-yl]-1,3,4-oxa-diazole 2011
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Acta crystallographica.Section E, Structure reports online
Periodical, Abbrev.
Acta Crystallogr.Sect.E.Struct.Rep.Online
Pub Date Free Form
1-Oct
Volume
67
Issue
Pt 10
Start Page
o2743
Other Pages
4
Notes
LR: 20111209; JID: 101089178; OID: NLM: PMC3201536; 2011/09/20 [received]; 2011/09/20 [accepted]; 2011/09/30 [epublish]; ppublish
Place of Publication
England
ISSN/ISBN
1600-5368; 1600-5368
Accession Number
PMID: 22058804
Language
eng
SubFile
Journal Article
DOI
10.1107/S1600536811038529 [doi]
Output Language
Unknown(0)
PMID
22058804
Abstract
In the title compound, C(18)H(13)BrN(4)O(3)S(3), the tetra-hydro-pyridine ring adopts a half-chair conformation with the central methyl-ene-C atom of the NCH(2)CH(2) unit at the flap. The dihedral angles between the tetra-hydro-pyridine ring and the pyridine and two thio-phene rings are 69.34 (13) 5.66 (13) and 68.63 (13) degrees , respectively, while the dihedral angle between the 1,3,4-oxadiazole and tetra-hydro-pyridine rings is 54.76 (13) degrees . The mol-ecule is stabilized by an intra-molecular C-Hcdots, three dots, centeredN inter-action. In the crystal, adjacent mol-ecules are connected via bifurcated C-Hcdots, three dots, centered(N,O) hydrogen bonds, forming a chain along the b axis.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Fun,H. K., Hemamalini,M., Rai,S., Isloor,A. M., Shetty,P.
Original/Translated Title
URL
Date of Electronic
20110930
PMCID
PMC3201536
Editors
A 1:1 co-crystal of the herbicide triflusulfuron-methyl and its degradation product triazine amine 2011 Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164SC, A-1060 Vienna, Austria.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Acta crystallographica.Section E, Structure reports online
Periodical, Abbrev.
Acta Crystallogr.Sect.E.Struct.Rep.Online
Pub Date Free Form
1-Sep
Volume
67
Issue
Pt 9
Start Page
o2321
Other Pages
2
Notes
LR: 20130228; JID: 101089178; OID: NLM: PMC3200658; 2011/07/05 [received]; 2011/08/04 [accepted]; 2011/08/11 [epublish]; ppublish
Place of Publication
England
ISSN/ISBN
1600-5368; 1600-5368
Accession Number
PMID: 22058947
Language
eng
SubFile
Journal Article
DOI
10.1107/S1600536811031631 [doi]
Output Language
Unknown(0)
PMID
22058947
Abstract
The herbicide triflusulfuron-methyl (systematic name: methyl 2-{[4-dimethyl-amino-6-(2,2,2-trifluoro-eth-oxy)-1,3,5-triazin-2-yl]carbamoylsulf amo-yl}-3-methyl-benzoate) and its degradation product triazine amine [systematic name: 2-amino-4-dimethyl-amino-6-(2,2,2-trifluoro-eth-oxy)-1,3,5-triazine] form a triclinic 1:1 co-crystal of the title compound, C(7)H(10)F(3)N(5)O.C(17)H(19)F(3)N(6)O(6)S, in which its two components are connected via a pair of complementary N-Hcdots, three dots, centeredN hydrogen bonds, similar to the monoclinic crystal structure of the parent compound triflusulfuron-methyl [Mereiter (2011 ). Acta Cryst. E67, o1778-o1779] in which a pair of mol-ecules related by a twofold axis are linked by two N-Hcdots, three dots, centeredN bonds. The triflusulfuron-methyl mol-ecules of both crystal structures are similar in geometric parameters and conformation, which is due to stiffening by a short intra-molecular N-Hcdots, three dots, centeredN bond [Ncdots, three dots, centeredN = 2.620 (4) A] and an intra-molecular dipole-dipole inter-action between the sulfamide and the carboxyl moieties, with O(s)cdots, three dots, centeredC(c) = 2.802 (5) A and O(c)cdots, three dots, centeredN(s) = 2.846 (4) A. Inter-molecular N-Hcdots, three dots, centeredO hydrogen bonds and slipped pi-pi stacking inter-actions between the diamino-triazine moieties [perpendicular distances of 3.25 A within hydrogen-bonded tetra-mers and 3.27 A between adjacent tetra-mers] link the two constituents of the co-crystal into columns parallel to the a axis. An intra-molecular C-Hcdots, three dots, centeredO hydrogen bond occurs in the triflusulfuron-methyl mol-ecule and inter-molecular C-Hcdots, three dots, centeredO inter-actions between triflusulfuron-methyl mol-ecules occur in the crystal structure. In the triflusulfuron-methyl molecule the dihedral angle between the least-squares planes of the two rings is 75.8 (1) degrees . In the triazine molecule, the CF(3) group is partly orientationally disordered.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Mereiter,K.
Original/Translated Title
URL
Date of Electronic
20110811
PMCID
PMC3200658
Editors