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dc.contributor.author | Brusko V. | |
dc.contributor.author | Rakhmatullin A. | |
dc.contributor.author | Shtyrlin V. | |
dc.contributor.author | Krivolapov D. | |
dc.contributor.author | Litvinov I. | |
dc.contributor.author | Zabirov N. | |
dc.date.accessioned | 2018-09-18T20:07:48Z | |
dc.date.available | 2018-09-18T20:07:48Z | |
dc.date.issued | 2006 | |
dc.identifier.issn | 0277-5387 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/136798 | |
dc.description.abstract | The crystal structure of the complex [Ni{PhNHC(S)NP(S)(OPr i)2-S,S}2] has been determined and its behavior in dichloromethane solution investigated by NMR 31P spectroscopy. The X-ray structural analysis shows the nickel atom at the symmetry center in a distorted square-planar arrangement with trans-disposition of the ligands. The six-membered cycle NiS(1)PNCS(2) has the form of the asymmetric boat. In dichloromethane solutions of the compound four signals have been detected by 31P-{1H} NMR method. These signals are related to three diamagnetic square-planar isomers with different dispositions and conformations of two ligands in anti-orientation: trans-chair-boat (A), cis-boat-boat (B), and trans-boat-boat (C). These isomers are in slow exchange equilibria. It was shown that all these forms are in rather fast chemical exchange with minor (unobserved) paramagnetic pseudo-tetrahedral isomers (AT, B T, and CT). The thermodynamic constants of equilibria between A, B, and C as well as rate constants and activation parameters for conversion of three square-planar to respective pseudo-tetrahedral forms were calculated from the 31P-{1H} NMR data. © 2005 Elsevier Ltd. All rights reserved. | |
dc.relation.ispartofseries | Polyhedron | |
dc.subject | Chelates | |
dc.subject | Chemical exchange | |
dc.subject | Isomers | |
dc.subject | Nickel | |
dc.subject | S ligands | |
dc.subject | Thermodynamic | |
dc.title | Crystal structure and dynamic behavior of [Ni{PhNHC(S)NP(S)(OPr i)2-S,S}2] complex in dichloromethane solution | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 6 | |
dc.relation.ispartofseries-volume | 25 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 1433 | |
dc.source.id | SCOPUS02775387-2006-25-6-SID33645082218 |