COMPLEXES OF SOME GROUP IV METAL TETRAHALIDES AND ORGANOTINS WITH BARBITURIC ACID

摘要

The synthesis and characterization of Si(IV), Ti(IV), Zr(IV), Sn(IV) halides, methyltin trichloride and dibutyltin diacetate complexes of barbituric acid are described. The complexes were characterized on the basis of elemental analyses as MX(4) . L(2) (M = Si, Ti or Zr and X = Cl; M = Sn, X = Cl, Br, I, CH3 and Cl or CH3COO and C4H9, L = C4H4N2O3). The complexes are non-ionic and quite stable as indicated from their conductivity and melting points measurements, respectively. On the basis of spectral (IR and NMR) studies, coordination occurs through one of the carbonyl oxygens and an octahedral geometry is proposed for the complexes. [References: 19]