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Synthesis and Structural Facets of Dialkyltin(IV) Complexes Constructed from 2-(2-(3, 5-Dimethyl-4-oxocyclohexa-2, 5-dien-1-ylidene)hydrazinyl)benzoate


Basu Baul, Tushar S; Linden, Anthony (2015). Synthesis and Structural Facets of Dialkyltin(IV) Complexes Constructed from 2-(2-(3, 5-Dimethyl-4-oxocyclohexa-2, 5-dien-1-ylidene)hydrazinyl)benzoate. Zeitschrift für Anorganische und Allgemeine Chemie, 641(8-9):1581-1588.

Abstract

Two new dialkyltin(IV) complexes of compositions [Me2Sn(LH)2(MeOH)] (1) and [nBu2Sn(LH)2(H2O)] (2) [LH– = 2-(2- (3,5-dimethyl-4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl)benzoate] were prepared by the reactions of the carboxylate ligand (LHH) and Me2SnO or nBu2SnO in toluene solution followed by recrystallization from methanol/toluene. In the crystal structures of 1 and 2, the central tin atom is chelated by two carboxylate anions, a solvent molecule derived from the crystallization medium, and two alkyl groups, giving rise to a distorted pentagonal bipyramidal coordination. The phenol hydrogen atom has migrated to the nitrogen atom nearest the carboxylate group, thus leading to the quinoid form of the ligand. Extensive π···π interactions between the planar ligands, coupled with O–H···O, C–H···O, and C–H···π interactions complete three-dimensional supramolecular frameworks in each case. The solution properties were assessed from 1H, 13C, and 119Sn NMR spectroscopy.

Abstract

Two new dialkyltin(IV) complexes of compositions [Me2Sn(LH)2(MeOH)] (1) and [nBu2Sn(LH)2(H2O)] (2) [LH– = 2-(2- (3,5-dimethyl-4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl)benzoate] were prepared by the reactions of the carboxylate ligand (LHH) and Me2SnO or nBu2SnO in toluene solution followed by recrystallization from methanol/toluene. In the crystal structures of 1 and 2, the central tin atom is chelated by two carboxylate anions, a solvent molecule derived from the crystallization medium, and two alkyl groups, giving rise to a distorted pentagonal bipyramidal coordination. The phenol hydrogen atom has migrated to the nitrogen atom nearest the carboxylate group, thus leading to the quinoid form of the ligand. Extensive π···π interactions between the planar ligands, coupled with O–H···O, C–H···O, and C–H···π interactions complete three-dimensional supramolecular frameworks in each case. The solution properties were assessed from 1H, 13C, and 119Sn NMR spectroscopy.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:2015
Deposited On:12 Nov 2015 08:53
Last Modified:05 Apr 2016 19:30
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0044-2313
Funders:Department of Biotechnology, New Delhi (Grant No. BT/329/NE/TBP/2012, Council of Scientific and Industrial Research, New Delhi (Grant No. 01 (2734)/13/ EMR-II, 2013, University Grants Commission, New Delhi, India through Special Assistance Program of Center for Advanced Studies in Chemistry, Phase-, Indo-Swiss Joint Research Programme, Joint Utilisation of Advanced Facilities (Grant No. JUAF 11, TSBB, AL)
Publisher DOI:https://doi.org/10.1002/zaac.201500186

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