The interaction of ammonium tetrathiomolybdate with the barium salts of the dithiocarbamates (dtc) of glycine, DL-alanine and DL-2-aminobutyric acid yielded Ba[Mo2S4(dtc)2]. The molar conductivities (∼ 50 Ω-1 cm-1) in DMSO indicated the ionic nature of the complexes. The subnormal magnetic moment (0.4 B.M.), electronic and IR spectral data and CVM peak potentials ( -0.95 and -1.25 V vs SCE) suggested a dimeric species with a [Mo2S4]2+ core. The IR spectral data suggested the bidentate coordination of the dithiocarbamate groups and the absence of coordination by the carboxylate group. Thermal properties of the complexes are discussed. © 1992.

Vasanthi Lakshmanan

M. Ramakrishna Udupa

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

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IIT Madras

Sulphidomolybdenum(V) complexes with amino acid dithiocarbamates

Polyhedron

The interaction of hard base chelating agents (LH) such as 8-quinolinol (oxH), salicylaldehyde (salH) and N-nitrosophenylhydroxylamine (NphaH) with ammonium tetrathiomolybdate(VI), (1), in aqueous solution yields disulphidomolybdenum(VI) complexes, [MoS2L2]. The i.r. absorptions at 540 and 510 cm-1 are assigned to v(Mo-S), which indicate that the two sulphido-groups are cis to each other, The interaction of (1) with soft base chelating agents (SS), such as dithiocarbamates (dtc), dithiophosphate (dtp) and xanthates (xan) yields dimeric sulphido-bridged sulphidomolybdenum(V) complexes, [Mo2S4(SS)2] and with potassium ethylthioxanthate (KEttxan) yields a molybdenum(IV) complex, [Mo(Ettxan)4]. The [Mo2S4(R2dtc)2] complexes were also obtained by the interaction of [MoO2(R2dtc)2] with phosphorus pentasulphide in xylene. It was concluded that tetrathiomolybdate(VI) undergoes facile reduction when compared with tetraoxomolybdate(VI). © 1986 VCH Verlagsgesellschaft mbH.

Transition Metal Chemistry

Reactivity of the tetrathiomolybdate(VI) anion towards hard and soft base chelating agents

Preparation, characterization and cyclic voltammetric behaviour of dimeric sulphidomolybdenum(V) dithiocarbamate complexes

Infrared and Raman Spectra of Inorganic and Coordination Compounds

Inorganica Chimica Acta

Chemistry of dithiocarbamate derivatives of amino acids. I. Study of some dithiocarbamate derivatives of linear α-amino acids and their nickel(II) complexes

Inorganic Chemistry

Di-.mu.-oxo, .mu.-oxo-.mu.-sulfido, and di-.mu.-sulfido complexes of molybdenum(V) with EDTA, cysteine, and cysteine ester ligands.  Preparation and electrochemical and spectral properties

Journal	Polyhedron
ISSN	02775387
Open Access	No