Synthesis and Crystal Structure of Bis(<Emphasis Type="Italic">N</Emphasis>-alkyl-<Emphasis Type="Italic">N</Emphasis>-phenyl dithiocarbamato)mercury(II) |
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Authors: | Damian C Onwudiwe Peter A Ajibade |
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Institution: | (1) Department of Chemistry, University of Fort Hare, Private Bag X1314, Alice, South Africa; |
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Abstract: | Abstract The mixed ligand dithiocarbamate complex was synthesized by the reaction between the ammonium salt of the dithiocarbamate
ligands with mercury salt. There are two mercury complexes in the asymmetric unit with a compositional disorder between an
ethyl group and a methyl group. A distorted tetrahedral geometry is found for each mercury atom defined by four sulphur atoms
derived from two asymmetrically chelating dithiocarbamate ligands. IR spectra show thioureide υ(C–N) bands at 1491 cm−1 which is higher than observed in the simple complexes of the same ligands. The effect of alkyl substituents were observed
in the magnetic unequivalence of the thioureide and phenyl units in the NMR spectroscopy. The molecules are related to each
other by virtue of the compositional disorder which exists at three positions in the alkyl group across the unit. The compound
crystallizes in the triclinic space group P-1 with a = 10.4764(10) ?, b = 11.0433(10) ?, c = 18.5566(17) ?, α = 97.8980(10)°, β = 95.3340(10)°, γ = 110.3010(10)°, and Z = 2. |
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