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Abstract
AbstractBased on structures determined by X-ray crystallography, ab initio MP2 calculations on type A mesoionic rings give geometries in good agreement with observed values. A study of four mesoionic ring systems, each with exocyclic oxygen, nitrogen or carbon groups, shows that the presence and configuration of exocyclic lone pairs significantly influences the geometry and configurational preference. Using a localised bond model and NBO analysis, these effects are rationalised in terms of an anomeric interaction of lone pairs with the antibonding orbitals of adjacent σ bonds. In agreement with experiment, similar effects are calculated for pyran-2-imines.
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Dalinger IL, Serushkina OV, Lipilin DL, Anisimov AA, Suponitsky KY, Sheremetev AB. Nitration of Azasydnones and Azasydnonimines: A Method for the Functionalization of Aryl Derivatives. Chempluschem 2019; 84:802-809. [DOI: 10.1002/cplu.201900243] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/13/2019] [Indexed: 12/30/2022]
Affiliation(s)
- Igor L. Dalinger
- Zelinsky Institute of Organic ChemistryRussian Academy of Sciences Moscow 119991 Russian Federation
| | - Olga V. Serushkina
- Zelinsky Institute of Organic ChemistryRussian Academy of Sciences Moscow 119991 Russian Federation
| | - Dmitry L. Lipilin
- Zelinsky Institute of Organic ChemistryRussian Academy of Sciences Moscow 119991 Russian Federation
| | - Aleksei A. Anisimov
- Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Moscow 119991 Russian Federation
- Mendeleev Russian Chemical Technological University Moscow 125047 Russian Federation
| | - Kyrill Yu. Suponitsky
- Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Moscow 119991 Russian Federation
- Plekhanov Russian University of Economics Moscow 117997 Russian Federation
| | - Aleksei B. Sheremetev
- Zelinsky Institute of Organic ChemistryRussian Academy of Sciences Moscow 119991 Russian Federation
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Shahrekipour F, Heydari R, Tahamipour B, Saravani H, Graiff C. Efficient Synthesis of New Stable 1,4-diionic Organosulfurs and Corresponding Mesoionic Compounds from N-Heterocyclic Ylides. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2013.819866] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Fahimeh Shahrekipour
- a Department of Chemistry, Faculty of Science , University of Sistan and Balouchestan , Zahedan , Iran
| | - Reza Heydari
- a Department of Chemistry, Faculty of Science , University of Sistan and Balouchestan , Zahedan , Iran
| | | | - Hamideh Saravani
- a Department of Chemistry, Faculty of Science , University of Sistan and Balouchestan , Zahedan , Iran
| | - Claudia Graiff
- c Dipartimento di Chimica , Universitá di Parma , Parma , Italy
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Jaźwiński J, Staszewska-Krajewska O. Synthesis and multinuclear NMR investigation of some mesoionic 3-phenyl-5-imino-1,2,3,4-oxatriazole imines. J Mol Struct 2004. [DOI: 10.1016/j.molstruc.2003.08.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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, NMR and X-ray diffraction study of mesoionic 1,2,3,4-thiatriazolium-5-olate and its ethylated derivative. J Mol Struct 1999. [DOI: 10.1016/s0022-2860(98)00503-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Słowikowska J, Jaźwiński J, Stefaniak L, Webb G. An X-ray study of two 1-thia-2,3,4-triazolo-5-methylides. J Mol Struct 1998. [DOI: 10.1016/s0022-2860(97)00306-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Bocian W, Jaźwiński J, Staszewska O, Wiench JW, Stefaniak L, Webb GA. NMR study of some sydnones, isosydnones, and isothiosydnones. Chem Heterocycl Compd (N Y) 1996. [DOI: 10.1007/bf01169966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Neugebauer FA, Fischer H, Krieger C. Zur Konstitution des „Diformazyls”: 5-[Bis(phenylazo)methylen]-1,3-diphenyltetrazolin-Betain. ACTA ACUST UNITED AC 1979. [DOI: 10.1002/cber.19791120703] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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