Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1411977 | Journal of Molecular Structure | 2006 | 8 Pages |
Abstract
Green coloured single crystals of [trans-Co(en)2Cl2]IO4I and dark red coloured single crystals of [trans-Co(en)2(N3)2]N3II were obtained by slowly mixing stoichiometric quantities of the separately dissolved trans-dichlorobis(ethylenediamine)cobalt(III) chloride with sodium metaperiodate or sodium azide in aqueous medium. Elemental analyses, spectroscopic studies (IR, UV/visible, 1H and 13C NMR) and solubility measurements were performed to characterize the complex salts. The compound I crystallizes in the monoclinic space group P21/c with a=6.3970(2), b=16.6790(4), c=12.3730(3) Ã
, β=99.148(1)°, V=1303.35(6) Ã
3, Z=4 and II crystallizes in the orthorhombic space group Pbca with a=10.1790(1), b=13.5350(1), c=17.2410(2) Ã
, V=2375.34(4) Ã
3, Z=8. Supramolecular hydrogen bonding networks between ionic groups [NHen+â¯Xanionâ] by second sphere coordination besides electrostatic forces of attraction have been observed. Compound II represents the first reported structure of a salt containing the cation, [trans-Co(en)2(N3)2]+.
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Authors
Raj Pal Sharma, Rajni Sharma, Ritu Bala, Andrew D. Burrows, Mary F. Mahon, Kevin Cassar,