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Journal ArticleDOI

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

01 Jan 1985-Polyhedron (Pergamon)-Vol. 4, Iss: 4, pp 649-651
TL;DR: Mo 2 S 4 (R 2 dtc) 2 (R = methyl, ethyl or benzyl; R 2 = pyrrolidinyl, piperidinyl or 4-morpholinyl) have been prepared starting from ammon
About: This article is published in Polyhedron.The article was published on 1985-01-01. It has received 5 citations till now. The article focuses on the topics: Dithiocarbamate & Cyclic voltammetry.
Citations
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Journal ArticleDOI
TL;DR: In this article, a series of new complexes, Mo2O2S2[S2P(OR)2]2 (where R = Et, n-Pr, i-Pr) were obtained by dropwise addition of an ethanolic solution of the ammonium or sodium salt of the appropriate O,O-dialkyl or -alkylene dithiophosphoric acid, or the acid itself, to a hot aqueous solution of molybdenum(V) pentachloride.
Abstract: A series of new complexes, Mo2O2S2[S2P(OR)2]2 (where R = Et, n-Pr, i-Pr) and Mo2O2S2[S2POGO]2 (where G = −CH2CMe2CH2−, −CMe2CMe2−) have been prepared by the dropwise addition of an ethanolic solution of the ammonium or sodium salt of the appropriate O,O-dialkyl or -alkylene dithiophosphoric acid, or the acid itself, to a hot aqueous solution of molybdenum(V) pentachloride. The complexes were also formed by heating solutions of Mo2O3[S2P(OR)2]4 or Mo2O3[S2POGO]4 species in glacial acetic acid. The Mo2O2S2[S2P(OR)2]2 and Mo2O2S2[S2POGO]2 compounds were characterized by elemental analyses, 1H, 13C, and 31P NMR, and infrared and Raman spectroscopy, as were the 1:2 adducts formed on reaction with pyridine. The crystal structures of Mo2O2S2[S2P(OEt2)]2, Mo2O2S2[S2P(OEt)2]2·2NC5H5, and Mo2O3[S2P(OPh)2]4 were determined. Mo2O2S2[S2P(OEt)2]2 (1) crystallizes in space group C2/c, No. 15, with cell parameters a = 15.644(3) A, b = 8.339(2) A, c = 18.269(4) A, β = 103.70(2)°, V = 2315.4(8) A3, Z = 4, R = 0.0439, and R...

14 citations

Journal ArticleDOI
TL;DR: In this paper, the synthesis of dinuclear Mo(V) complexes containing the Mo2S42+ core was reported, where the disulfido bridge was replaced by a bis-sulfido bridging.

12 citations

Journal ArticleDOI
TL;DR: In this paper, two novel heterometallic trinuclear incomplete cubane-like clusters were synthesized by reaction of [(CH 3 CH 2 ) 4 N] 2 [M 2 S 4 (edt) 2 ] (M = Mo, W) with Cu(PPh 3 ) 2 (dtp) [where edt is 1,2-ethane-dithiolato ligand, dtp is S 2 P(OCH 2 CH 3 )2 − ].

10 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the interaction of hard base chelating agents (LH), such as 8-quinolinol (oxH), salicylaldehyde (salH), and N-nitrosophenylhydroxylamine (NphaH) with ammonium tetrathiomolybdate(VI) in aqueous solution yields disulphidomolybdenum(VI), and the ir absorptions at 540 and 510 cm−1 are assigned tov(Mo-S), which indicate that the two sulphido-groups
Abstract: The interaction of hard base chelating agents (LH) such as 8-quinolinol (oxH), salicylaldehyde (salH) andN-nitrosophenylhydroxylamine (NphaH) with ammonium tetrathiomolybdate(VI), (1), in aqueous solution yields disulphidomolybdenum(VI) complexes, [MoS2L2] The ir absorptions at 540 and 510 cm−1 are assigned tov(Mo-S), which indicate that the two sulphido-groups arecis 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)

6 citations

Journal ArticleDOI
TL;DR: In this article, 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.

1 citations

References
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TL;DR: In this article, the X-ray crystal structure of MoO2S22+ has been determined and the MoMo distance of the diamagnetic compound is 2.817(2) A and the average Mo=St distance 2.099(4) A.
Abstract: MoO42− is reduced by diethyldithiocarbamate (Et2dtc−) on prolonged digestion in aqueous medium whereby the complex [Mo2VO2S2(Et2dtc)2] is formed. The central moiety Mo2O2S22+ has a high formation tendency. When [Mo2V(S2)6]2− is refluxed with Et2dtc− in ethanol, [Mo2VS (Et2dtc)2] is formed, the X-ray crystal structure of which has been determined (space group P212121, a = 10.550(2) A, b = 13.820(5) A, c = 14.723(12) A, dc = 1.90 g · cm3−, Z = 4). The MoMo distance of the diamagnetic compound is 2.817(2) A and the average Mo=St distance 2.099(4) A. Uber die Darstellung S, S-verbruckter Zweikern-Molybdan(V)-Komplexe. Kristall- und Molekularstruktur von [Mo2S4(Et2dtc)2] MoO42− wird von Diathyldithiocarbaminat in wasriger Losung reduziert. Die zentrale Einheit MoO2S22+ des gebildeten [Mo2VO2S2(Et2dtc)2] weist eine grose Bildungstendenz auf. [Mo2VS4(Et2dtc)2] last sich aus [Mo2V(S2)6]2− erhalten (Rontgenstrukturkturdaten vgl. Abstract).

27 citations