Abstract
The title compound has been synthesized by the reaction of CrCl36H2O with K{S2COCH(CH3)2} in a 1∶3 molar ratio in an aqueous medium. It has been characterized by elemental analysis and IR spectral studies. Crystals of Cr{S2COCH(CH3)2}3 are monoclinic, space group P21/n witha=10.002(2),b=10.973(1),c=18.961(6) Å,β=91.78(2)°,V=2079.9 Å3,Z=4,D calc=1.46 g cm−3, monochromatic radiation (Mo-Kα), λ=0.71069 Å,μ=11.2 cm−1,F(0 0 0)=948,T=295K, finalR=0.0320 for 2641 reflections. The environment of the chromium atom is based on an octahedral geometry having six sulfur donor atoms from three symmetrically chelated ligands with average distances: Cr-S=2.396(9) Å, C-S=1.690(3) Å and C-O=1.315(3) Å. The bond distance between oxygen atom and the carbon atom of the isopropyl group (O-Cav=1.478(4) Å) suggests that the form −S (−)2 C=O(+)CH(CH3)2 contributes significantly to the structure of the isopropyl group.
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Bhargava, S., Bohra, R. & Mehrotra, R.C. Crystal and molecular structure of tris-(O-isopropylxanthato)-chromium(III). Journal of Crystallographic and Spectroscopic Research 21, 281–285 (1991). https://doi.org/10.1007/BF01156079
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DOI: https://doi.org/10.1007/BF01156079