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X-ray powder diffraction study of some cobalt (II) complexes

Published online by Cambridge University Press:  29 February 2012

Rajesh Kumar  and
Ranjana Ghose
Rajesh Kumar
Affiliation:
Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221005, India
Ranjana Ghose*
Affiliation:
Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221005, India
*
a)Author to whom correspondence should be addressed. Electronic mail: ranjana@bhu.ac.in
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Abstract

Co(II) complexes with benzoic acid and ternary complexes with ligands benzoic acid and histidine/aspartic acid have been synthesized and characterized using various spectroscopic methods. On the basis of infrared, UV-visible spectra, and magnetic data the complexes were found to be having octahedral polymeric geometry. X-ray powder diffraction results show that the crystal systems of Co(II)-Ben and Co(II)-Ben-Hist complexes are triclinic with lattice constants a=15.58 Å, b=11.92 Å, c=4.33 Å, α=96.08°, β=104.68°, γ=88.46°, and V=774.15 Å3 and a=18.88 Å, b=17.01 Å, c=15.13 Å, α=93.15°, β=89.41°, γ=100.71°, and V=4768.75 Å3, respectively. The Co(II)-Ben-Asp complex is orthorhombic with lattice constants a=21.57 Å, b=15.06 Å, c=11.40 Å. α=β=γ=90°, and V=3703.38 Å3.

Keywords

benzoic acidhistidineaspartic acid
Type
New Diffraction Data
Information
Powder Diffraction , Volume 24 , Issue 1 , March 2009 , pp. 50 - 52
Copyright
Copyright © Cambridge University Press 2009

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