S. Melandri, I. Peña, D. Loru, M. Sanz, C. Calabrese, A. Maris, Annalisa Vigorito
The effects of substitution were investigated for the sulfonamides class of molecules, in particular those which contain the benzosulfonamide functional group. This group of molecules is of extreme interest in the biological field since many of them are active against a variety of diseases. In this work, structural investigations on the pharmacophoric group benzensulfonamide and the substitution effects have been performed through the studies of its derivatives benzensulfonamide itself, para -toluensulfonamide, ortho -toluensulfonamide and the bioactive molecule sulfanilamide. In all compounds, but in ortho -toluensulfonamide, the amino group lies perpendicular to the benzene plane with the amminic hydrogens eclipsing the oxygen atoms. In ortho -toluensulfonamide where a weak attractive interaction between the nitrogen lone pair and the methyl hydrogen atoms takes place, the amino group lies in the gauche orientation. These results show that such weak non-covalent interactions are able to change the conformational preferences of the pharmacophoric group. For all species, the 14 N quadrupolar hyperfine analysis has been performed. This has provided crucial information for the unambiguous identification of the observed conformation and the structural parameters related to the position of the nitrogen atom. In addition, for ortho -toluensulfonamide, the vibration-rotation hyperfine structure related to the methyl torsion has been analyzed and the methyl group rotation barrier was determined.
{"title":"THE SHAPES OF SULFONAMIDES: ROTATIONAL SPECTRA OF BENZENESULFONAMIDE, ortho-TOLUENSULFONAMIDE, para-TOLUENSULFONAMIDE AND SULFANILAMIDE","authors":"S. Melandri, I. Peña, D. Loru, M. Sanz, C. Calabrese, A. Maris, Annalisa Vigorito","doi":"10.15278/isms.2021.rk10","DOIUrl":"https://doi.org/10.15278/isms.2021.rk10","url":null,"abstract":"The effects of substitution were investigated for the sulfonamides class of molecules, in particular those which contain the benzosulfonamide functional group. This group of molecules is of extreme interest in the biological field since many of them are active against a variety of diseases. In this work, structural investigations on the pharmacophoric group benzensulfonamide and the substitution effects have been performed through the studies of its derivatives benzensulfonamide itself, para -toluensulfonamide, ortho -toluensulfonamide and the bioactive molecule sulfanilamide. In all compounds, but in ortho -toluensulfonamide, the amino group lies perpendicular to the benzene plane with the amminic hydrogens eclipsing the oxygen atoms. In ortho -toluensulfonamide where a weak attractive interaction between the nitrogen lone pair and the methyl hydrogen atoms takes place, the amino group lies in the gauche orientation. These results show that such weak non-covalent interactions are able to change the conformational preferences of the pharmacophoric group. For all species, the 14 N quadrupolar hyperfine analysis has been performed. This has provided crucial information for the unambiguous identification of the observed conformation and the structural parameters related to the position of the nitrogen atom. In addition, for ortho -toluensulfonamide, the vibration-rotation hyperfine structure related to the methyl torsion has been analyzed and the methyl group rotation barrier was determined.","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73783227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuan Qin, Jingsong Zhang, Ge Sun, Yu Song, Xianfeng Zheng
{"title":"CHARACTERIZATION OF THE A2Σ+ STATE OF SH/SD RADICALS BY PHOTODISSOCIATION SPECTROSCOPY","authors":"Yuan Qin, Jingsong Zhang, Ge Sun, Yu Song, Xianfeng Zheng","doi":"10.15278/isms.2021.fd13","DOIUrl":"https://doi.org/10.15278/isms.2021.fd13","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72735158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"HIGH-RESOLUTION LASER SPECTROSCOPY OF LEAD OXIDE (PbO) IN 400-450 NM","authors":"K. Enomoto, M. Baba, Takehiro Suzuki","doi":"10.15278/isms.2021.fl08","DOIUrl":"https://doi.org/10.15278/isms.2021.fl08","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84963199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"RO-VIBRATIONALLY AVERAGED MOLECULAR STRUCTURE OF BENZENE I.\u0000ALMOST THE SAME BOND LENGTHS FOR THE C-H AND C-D BONDS.","authors":"M. Baba, Tsuneo Hirano, U. Nagashima","doi":"10.15278/isms.2021.fk12","DOIUrl":"https://doi.org/10.15278/isms.2021.fk12","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90079806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"THE MILLIMETER- AND SUBMILLIMETER-WAVE SPECTROSCOPY OF ISOPRENE.","authors":"Daniel J. Tyree, I. Medvedev","doi":"10.15278/isms.2021.ra12","DOIUrl":"https://doi.org/10.15278/isms.2021.ra12","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"113 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79414626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Siebert, B. McGuire, Michael McCarthy, A. Burkhardt, Kelvin Lee, A. Remijan
{"title":"METHYL-CARBON CHAIN CHEMISTRY IN TMC-1: THE FIRST INTERSTELLAR DETECTION OF METHYLCYANOTRIACETYLENE (CH3C7","authors":"M. Siebert, B. McGuire, Michael McCarthy, A. Burkhardt, Kelvin Lee, A. Remijan","doi":"10.15278/isms.2021.tj01","DOIUrl":"https://doi.org/10.15278/isms.2021.tj01","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77044649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SUB-DOPPLER FREQUENCY METROLOGY IN HD FOR TESTS OF FUNDAMENTAL PHYSICS","authors":"F. Cozijn, W. Ubachs, E. Salumbides, M. Diouf","doi":"10.15278/isms.2021.wi08","DOIUrl":"https://doi.org/10.15278/isms.2021.wi08","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87792984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"DEVELOPMENT OF A SUPERSONIC WIND TUNNEL FOR A CAVITY RINGDOWN SPECTROMETER","authors":"E. Jans, I. Adamovich, T. Miller","doi":"10.15278/isms.2021.rf07","DOIUrl":"https://doi.org/10.15278/isms.2021.rf07","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"4178 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86777044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ryan Brady, S. Yurchenko, J. Tennyson, W. Somogyi, Gap‐Sue Kim
{"title":"AN EXOMOL LINE LIST FOR SO: ROVIBRONIC SPECTRUM OF SULFUR MONOXIDE","authors":"Ryan Brady, S. Yurchenko, J. Tennyson, W. Somogyi, Gap‐Sue Kim","doi":"10.15278/isms.2021.fh05","DOIUrl":"https://doi.org/10.15278/isms.2021.fh05","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"05 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85989704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Linton, Anh T. Le, A. Adam, E. Mengesha, T. Steimle
{"title":"HIGH RESOLUTION LASER INDUCED FLUORESCENCE AND ZEEMAN EFFECT IN THE [18.6]1.5-X2Σ+ TRANSITION OF YbOH","authors":"C. Linton, Anh T. Le, A. Adam, E. Mengesha, T. Steimle","doi":"10.15278/isms.2021.fl05","DOIUrl":"https://doi.org/10.15278/isms.2021.fl05","url":null,"abstract":"","PeriodicalId":20484,"journal":{"name":"Proceedings of the 2021 International Symposium on Molecular Spectroscopy","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75609038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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