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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-51714

Basu Baul, T S; Paul, A; Linden, A (2012). Synthesis, characterization and crystal structures of 2-[(E)-2-(4-hydroxy-3,5-dimethylphenyl)-1-diazenyl]benzoic acid and its polymeric and monomeric triorganotin(IV) complexes. Journal of Organometallic Chemistry, 696(26):4229-4235.

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Three triorganotin(IV) complexes of composition R3SnLH (R = Me, Bu and Ph and LH = 2-[(E)-2-(4-hydroxy-3,5-dimethylphenyl)-1-diazenyl]benzoate) have been synthesized and characterized by 1H-,13C-, 119Sn- NMR, and IR spectroscopic techniques in combination with elemental analysis. The crystal structures of the carboxylate ligand HO2CC6H4{N=N(C6H2-4-OH-3,5-(CH3)2)}-o in its neutral form and three triorganotin(IV) complexes, viz., polymeric (R3Sn[O2CC6H4{N-N(H)(C6H2-4-O-3,5-(CH3)2)}-o])n (R = Me (1) and Bu (2)) and monomeric Ph3Sn[O2CC6H4{N-N(H)(C6H2-4-O-3,5-(CH3)2)}-o] (3) complexes are reported. The polymeric complexes 1 and 2 exist as extended chains in which the LH-bridged Sn-atoms adopt a trans-R3SnO2 trigonal bipyramidal configuration with R groups in the equatorial positions and the axial sites occupied by an oxygen atom from the carboxylate ligand and the phenoxide O atom of the next carboxylate ligand. The Sn atom in complex 3 has a distorted tetrahedral geometry. In all three complexes, the carboxylate ligand is in the zwitterionic form with the phenolic proton moved to the nearby azo nitrogen atom, in contrast to the free carboxylic acid ligand which is in the azo form.


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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Uncontrolled Keywords:Triorganotin Carboxylate 2-[(E)-2-(4-Hydroxy-3,5-dimethylphenyl)- 1-diazenyl]benzoic acid NMR Crystal structure
Deposited On:12 Dec 2011 11:35
Last Modified:05 Apr 2016 15:08
Funders:Department of Science & Technology, New Delhi, India (Grant No. SR/S1/IC-03/2005, TSBB), Council of Scientific and Industrial Research, New Delhi, India (Grant No. 09/347/(0197)/2011/EMR I, Senior Research Fellowship, AP), the University Grants Commission, New Delhi, India through SAP-DSA, Phase III, Indo-Swiss Joint Research Programme, Joint Utilisation of Advanced Facilities (Grant No. JUAF 11, TSBB, AL)
Publisher DOI:10.1016/j.jorganchem.2011.09.018

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