Dimeric and monomeric six-coordinate tin(IV) complexes: synthesis and spectral (IR, NMR (1H, 13C, 119Sn), TOF-MS, and ESI-MS) studies
摘要:
Six-coordinate dimeric tin(IV) complexes, [(-Cl)(2)Sn-2((2)-sb)(2)Cl-4] {where sb=salicylidene-2-methyl-1-aminobenzene (o-smabH) (1), salicylidene-4-methyl-1-aminobenzene (p-smabH) (2), and salicylidene-2-aminopyridine (sapH) (3)}, have been synthesized by interactions of tin(IV) chloride with the appropriate sodium salt of Schiff bases in 1:1M ratio in isopropanol-benzene. These complexes have been characterized by elemental (C, H, N, and Sn) and spectral [IR, NMR (H-1, C-13, Sn-119), TOF-MS, and ESI-MS] studies. Complexes 1-3 on treatment with an excess of THF afford mononuclear six-coordinate tin(IV) complexes, [(sb)SnCl3THF], 4-6. The biological activities (e.g. antimicrobial action) of the synthesized Schiff bases and 1-3 were assessed by in vitro testing on the growth of various strains of bacteria and fungi.
The interaction of dichlorotris(triphenylphosphine)ruthenium(II) with the sodium salts of various Schiff bases leads to complexes of the type trans-RuL(PPh3)2 for the quadridentate bifunctional ligands and RuL2(PPh3)2 for the bifunctional ligands.