Synthesis and characterization of the first diorganotin(IV) complexes containing mixed arylazobenzoic acids and having skew trapezoidal bipyramidal geometry |
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Authors: | Tushar S Basu Baul Wandondor Rynjah Claudio Pettinari |
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Institution: | a Department of Chemistry, North-Eastern Hill University, NEHU Permanent Campus, Umshing, Shillong 793 022, India b Dipartimento di Chimica Inorganica e Analitica “Stanislao Cannizzaro” Università di Palermo, Viale delle Scienze, Parco D’Orleans II, Edificio 17, 90128 Palermo, Italy c Dipartimento di Scienze Chimiche, Università di Camerino, Via S. Agostino 1, 62032 Camerino, Italy d Institute of Organic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland |
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Abstract: | Three diorganotin(IV) complexes of the type, R2Sn(LaH)(LbH)] (R = nBu or Me and, LaH and LbH are two different 5-(E)-2-(aryl)-1-diazenyl]-2-hydroxybenzoate residues; a: aryl = 4′-Cl-(held constant) and b: aryl = 4′-Me or 4′-Br) have been prepared either by reacting nBu2SnO, LaHH′ and LbHH′ (1:1:1) in anhydrous toluene or by reacting Me2SnCl2, LaHNa and LbHNa (1:1:1) in anhydrous methanol. The products were characterized by microanalysis, IR, NMR (1H, 13C, 119Sn) and 119mSn Mössbauer spectroscopy. A full characterization of the structures of the complexes nBu2Sn(LaH)(LbH)] (1 and 2) and Me2Sn(LaH)(LbH)] (3) in the solid state were accomplished by single crystal X-ray crystallography. These complexes were found to adopt the usual dicarboxylato structural type with a skew-trapezoidal bipyramidal arrangement around the tin atom. |
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Keywords: | Diorganotin Mixed azocarboxylates 5-[(E)-2-(aryl)-1-diazenyl]-2-hydroxybenzoic acid NMR Mö ssbauer Crystal structures |
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