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

Authors

. LUTFULLAH
AHMAD UMAR
MOHAMMED MUZIBUR RAHMAN
MOHAMMAD MANSOOB KHAN
YOON BONG HAHN

DOI

-

Abstract

The title ligand, sodium dihydrobis(1,2,3-benzotriazolyl)borate, Na[H_2B(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 Cr(III), Mn(II), Fe(III), Fe(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(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 Cu(II), which has been proposed to have a square-planar geometry. The complexes of Cr(III) and Fe(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

First Page

179

Last Page

189

Recommended Citation

LUTFULLAH, .; UMAR, AHMAD; RAHMAN, MOHAMMED MUZIBUR; KHAN, MOHAMMAD MANSOOB; and HAHN, YOON BONG (2007) "Synthesis and Physico-chemical and Spectroscopic Investigations of Sodium Dihydrobis(1,2,3-benzotriazolyl)borate Ligand and Its Transition Metal Complexes," Turkish Journal of Chemistry: Vol. 31: No. 2, Article 9. Available at: https://journals.tubitak.gov.tr/chem/vol31/iss2/9