Synthesis and Physico-chemical and Spectroscopic Investigations of Sodium Dihydrobis(1,2,3-benzotriazolyl)borate Ligand and Its Transition Metal Complexes

Authors : Ahmad UMAR, LUTFULLAH, Mohammed Muzibur RAHMAN, Mohammad Mansoob KHAN, Yoon Bong HAHN

Pages : 179-189

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The title ligand, sodium dihydrobisinsert ignore into journalissuearticles values(1,2,3-benzotriazolyl);borate, Na[H2Binsert ignore into journalissuearticles values(BTz);2], was synthesized by refluxing 1 mole of sodium borohydride with 2 moles of 1,2,3- benzotriazole in toluene. The ligand shows ample reactivity towards Crinsert ignore into journalissuearticles values(III);, Mninsert ignore into journalissuearticles values(II);, Feinsert ignore into journalissuearticles values(III);, Feinsert ignore into journalissuearticles values(II);, Coinsert ignore into journalissuearticles values(II);, Niinsert ignore into journalissuearticles values(II);, Cuinsert ignore into journalissuearticles values(II);, Zninsert ignore into journalissuearticles values(II);, Cdinsert ignore into journalissuearticles values(II); and Hginsert ignore into journalissuearticles values(II); metal ions and forms stable complexes. The ligand and its metal complexes were characterized by physico-chemical and spectroscopic techniques. All the complexes of divalent metal ions are tetrahedral except for Cuinsert ignore into journalissuearticles values(II);, which has been proposed to have a square-planar geometry. The complexes of Crinsert ignore into journalissuearticles values(III); and Feinsert ignore into journalissuearticles values(III); appear to have an octahedral geometry. The magnitude of molar conductance of 10-3 M solution indicates that all the complexes are non-electrolytic.
Keywords : Dihydrobis 1, 2, 3 benzotriazolyl, borate ligand, metal complexes, spectral studies, electronic spectra