SYNTHESIS AND SPECTROSCOPIC STUDIES OF 2-(N-SALICYLIDENE)-5-CHLOROBENZOPHENONE DERIVATIVES OF ORGANOSILICON(IV)

Abstract

A few tri-, di- and monorganosilicon(IV) derivatives of Schiff base, 2-(N-salicylidene)-5-chlorobenzophenone have been synthesised by the reactions of the corresponding tri-, di- and monorganosilicon(IV) chlorides with sodium salt of 2-(N-salicylidene)-5-chlorobenzophenone (prepared in siru) in different molar ratios. These newly synthesised derivatives have been characterised by elemental analyses, molecular weights, conductivity measurements and spectral (IR and PMR) studies and their coordination behaviour has been systematically discussed.

Organosilicon complexes of oxygen, nitrogen and sulfur donor ligands have been reported,^[1–3] and are widely used in medicinal and pharmaceutical chemistry.^[4–6] Certain organosilicon compounds have been extensively used in Chemical vapour deposition and deoxygenation reactions in organic transformations.^[7] Our continuing interest in the synthesis of biologically active complexes have led us to prepare and study the structural as well as other aspects of organosilicon(IV) complexes of 2-(N-salicylidene)-5-chlorobenzophenone, an important metabolite precursor for the synthesis of drugs.^[8]

Key Words:

• 2-(N-salicylidene)-5-chlorobenzophenone
• coordination behaviour
• organosilicon(IV) complexes
• molecular weight
• conductivity measurement
• spectral studies