Add time:08/13/2019         Source:sciencedirect.com

The reactions of imidazole (L1), benzimidazole (L2), 2-phenylimidazole (L3), 1-acetylimidazole (L4), imidazoline-2 (1,3H)-thione (L5) and 1-methyl-imidazoline-2 (3H)-thione (L6) with RnSnCl4−n (R=Me, Bun or Ph; n=1, 2 or 3) were investigated. Twenty-seven novel adducts were obtained and characterized by analytical (elemental analysis, conductivity and vaporimetric molecular weight measurements) and spectral (IR, far IR, 1 H and 119 Sn NMR) data. The ligands L 1, L 2, L 3 and L 4 behave in the monodentate N-donor fashion, whereas L 5 and L 6 behave as monodentate S-donor molecules. Breaking of the N–CO bonds and protonation of imidazolate moiety occurred when the donor L 4 reacts with organotin acceptors in not rigorously anhydrous conditions. The behavior of the adducts in acetone and chlorinated solvents is also discussed. Comparison was made with related organotin (IV) complexes of imidazoles.

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