Synthesis and structural characterization of some organoboron complexes with nitrogen donor azomethines

Abstract

A few organoboron complexes of nitrogen and sulphur/oxygen containing ligands having <img src='http://www.niscair.res.in/jinfo/equation93.gif' border=0>H and <img src='http://www.niscair.res.in/jinfo/equation94.gif' border=0>H donor systems have been synthesised and characterized on the basis of molecular weight determination, conductance measurements, IR, ¹H NMR, ¹³C NMR and ¹¹B NMR spectral studies. The unimolecular and bimolecular reactions between phenylboronic acid and the ligands under investigation have yielded non-electrolytic complexes of the type PhB(OH)(<img src='http://www.niscair.res.in/jinfo/equation93.gif' border=0>), PhB(OH)(<img src='http://www.niscair.res.in/jinfo/equation94.gif' border=0>), PhB(<img src='http://www.niscair.res.in/jinfo/equation93.gif' border=0>)₂ and PhB(<img src='http://www.niscair.res.in/jinfo/equation94.gif' border=0>)₂ respectively. A stable tetracoordinated environment around the boron atom has been assigned.