STUDIES ON HETEROMETALLIC BINUCLEAR ALDIMINE DERIVATIVES OF BORON(III) AND ALUMINUM(III)

Synthetic and spectroscopic features of some heterometallic binuclear organoborane derivatives with monofunctional bidentate thiosemicarbazo nes and semicarbazones derived from the condensation of 2-pyridine car baldehyde, 2-furfuraldehyde, 2-thiophenecarbaldehyde, 2-cinnamaldehyde and 3-indolecarbaldehyde with thiosemicarbazide and semicarbazide hyd rochloride have been carried out in 1:1:1 molar ratio. The resulting d erivatives of the types [GRAPHICS] and [GRAPHICS] (where TSCz-1 and SC z-1 represent the anions of thiosemicarbazone and semicarbazone) are c oloured solids and non-electrolytic in nature. On the basis of analyti cal data, IR, H-1, C-13 and B-11 NMR spectral studies, a tricoordinate d environment for boron and a tetra-coordinated environment around alu minum may be assigned to the resulting binuclear complexes.