Synthesis and Characterization of Some Transition Metal Complexes with Poly (2-methylindolyl)borate Anions
- 1 August 1992
- journal article
- research article
- Published by Taylor & Francis in Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry
- Vol. 22 (8) , 1239-1250
- https://doi.org/10.1080/15533179208020265
Abstract
Some new complexes of potassium dihydrobis-, hydrotris- and tetrakis(2-methylindolyl)borates with Cr(III), Mn(II), Fe(III), Co(II), Ni(II) and Cu(II) have been characterized by elemental analyses, magnetic measurements and IR- and electronic spectral studies. The divalent- and trivalent metal ions form complexes in 1:1 and 1:2 (metal:ligand) ratios, respectively. The Cr(III) and Fe(III) complexes of dihydrobis- and hydrotris(2-methylindolyl)-borate appear to be octahedral and those of Cu(II) are proposed to be sqaure planar. A tetrahedral geometry is suggested for the Mn(II), Co(II) and Ni(II) complexes. All complexes of tetrakis-(2-methylindolyl)borate are octahedral except for Cu(II) which seems to have a square planar geometry. The ligand field parameters 10 Dq, B and β values have also been calculated in some cases.Keywords
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