Dibenzyltin(IV) complexes of 5-[(E)-2-(aryl)-1-diazenyl]quinolin-8-olates:: Synthesis and an investigation of structures by X-ray diffraction, solution and solid-state tin NMR, 119Sn Mossbauer and electrospray ionization MS

A series of cis-bis {5-[(E)-2-(aryl)-1-diazenyl]quinolinolato}dibenzyltin(IV) complexes have been synthesized by reacting sodium salts of 5-[(E)-2-(aryl)-1-diazenyl]quinolin-8-ol (LH) and dibenzyltin dichloride. These complexes have been characterized by H-1, C-13, Sn-119 NMR, ESI-MS in solution and by IR and Sn-119m Mossbauer, Sn-117 CP-MAS NMR spectroscopy in solid state. In addition, the structures of three of the dibenzyltin(IV) complexes, viz., Bz(2)Sn(L-2)(2) (2), Bz(2)Sn(L-3)(2) (3), and Bz(2)Sn(L-5)(2) (5) (L = 5-[(E)-2-(aryl)-1-diazenyl]quinolin-8-ol: aryl = 4'-methylphenyl- (LH)-H-2), 4'-methoxylphenyl- ((LH)-H-3) and 4-bromophenyl- ((LH)-H-5)) were determined by single-crystal X-ray diffraction. In general, the complexes were found to adopt a distorted cis-octahedral arrangement around the tin atom in both solution and solid state. (c) 2006 Elsevier B.V. All rights reserved.