Synthesis and Characterisation of Diorganotin(IV) Complexes of 3,4-Dihydroxybenzaldehyde Semicarbazone.

The diorganotin(IV) complexes of the type Me₂SnL, Bu₂SnL and Ph₂SnL (L) with the anion of the semicarbazone ligand formed by condensation reaction of 3,4-dihydroxybenzaldehyde with semicarbazide were synthesized using 1:1 metal to ligand reactant ratios. The newly synthesized complexes were characterized using elemental analysis, infrared and nuclear magnetic resonance (¹H, ¹³C, ¹¹⁹Sn) spectroscopic techniques. Complex formation between the organotin(IV) moiety and the anion of 3,4-dihydroxybenzaldehysemicarbazone occurred with chelation at the o-dihydroxy positions. The complexes were proposed to have tetrahedral geometry. [ABSTRACT FROM AUTHOR]