Synthesis and characterization of some diorganotin(IV) complexes of Schiff bases derived from a non‐protein amino acid. Crystal structures of {HO₂CC₆H₄[NC(H)}{C(CH₃)CH(CH₃)‐3‐OH]‐<i>p</i>} and its di‐<i>n</i>‐butyltin(IV) complex (^<i>n</i>Bu₂Sn{O₂CC₆H₄[NC(H)}{C(CH₃)CH(CH₃)‐3‐OH]‐<i>p</i>}₂)

Abstract

Abstract Diorganotin(IV) complexes R 2 Sn(LH) 2 (R = Me, n Bu) and {[ n Bu 2 Sn(LH)] 2 O} 2 (LH = 4‐[(2 Z )‐(3‐hydroxy‐1‐methyl‐2‐butenylidene)amino]benzoate and 4‐[{( E )‐1‐(2‐hydroxyphenyl)methylidene}mino]benzoate) have been reported. The complexes were characterized by elemental analysis, IR, NMR ( 1 H, 13 C, 119 Sn) and 119m Sn Mössbauer spectroscopy. Crystal structures of a ligand {HO 2 CC 6 H 4 [NC(H)}{C(CH 3 )CH(CH 3 )‐3‐OH]‐ p } and one of its di‐ n ‐butyltin(IV) complexes ( n Bu 2 Sn{O 2 CC 6 H 4 [NC(H)}{C(CH 3 )CH(CH 3 )‐3‐OH]‐ p } 2 ) were determined. The spectroscopic data suggest that R 2 Sn(LH) 2 complexes have skew‐trapezoidal bipyramidal structure while {[ n Bu 2 Sn(LH)] 2 O} 2 complexes adopt a dimeric tetraorganodistannoxane structure in the solid state and undergo complex exchange processes in deuterochloroform solution, as revealed by 119 Sn NMR spectroscopy. Copyright © 2008 John Wiley &amp; Sons, Ltd.