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- W2150209025 abstract "The compound [W2S4{S2P(OEt)2}2] has been isolated by two alternative routes: (a) treatment of [WS4]2– with HS2P(OEt)2 and (b) reaction of WS2Cl2 with [NH4][S2P(OEt)2]. The oxidation product of both reactions is [(EtO)2P(S)S–]2. The two routes led to two different crystal forms, (1a) and (1 b), of the product [W2S4{S2P(OEt)2}2]. Treating [W2S4{S2P(OEt)2}2], either form, with Na(S2CNEt2) gave [W2S4(S2CNEt2)2](2). The crystal structures of (1a), (1b), and (2) have been determined. (1a) is monoclinic, space group P21/n, with a= 18.230(11), b= 12.905(11), c= 10.153(12)Å, β= 90.5(1)° and Z= 4; (1b) is monoclinic, space group P21/a, with a= 13.844(12), b= 10.280(9), c= 17.907(13)Å, β= 113.2(1)°, and Z= 4; (2) is orthorhombic, space group P212121, with a= 13.80(1), b= 10.49(1), c= 14.59(1)Å, and Z= 4. Diffractometer data were collected for all three compounds [independent reflections above background, 5 787 (1a), 3 658 (1b), and 2 134 (2)], the structures determined by the heavy-atom method and refined to give R= 0.061, 0.084, and 0.066 for (1a), (1b), and (2) respectively. All three compounds contain the syn form of [(S)W(µ-S)2W(S)]2+{bond length ranges 2.054(12)–2.116(5)[W–S(terminal)], 2.279(8)–2.325(9)[W–S(bridging)], and 2.795(2)–2.819(1)Å(W–W)}. In addition to the bonds in the [W2S4]2+ moiety, each tungsten atom is co-ordinated to a bidentate ligand with W–S bond lengths in the range 2.429(9)–2.498(6)Å. Apart from the W–W bond each metal atom is five-co-ordinate and has a distorted square-pyramidal structure." @default.
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- W2150209025 date "1987-01-01" @default.
- W2150209025 modified "2023-09-25" @default.
- W2150209025 title "Dimeric tungsten(<scp>V</scp>) compounds containing [(S)W(µ-S)<sub>2</sub>W(S)]<sup>2+</sup>. Syntheses and structures of di-µ-sulphido-bis[(diethyl dithiophosphato-SS′)sulphido-tungsten(<scp>V</scp>)] and di-µ-sulphido-bis[(N,N-diethyldithiocarbamato-SS′)-sulphidotungsten(<scp>V</scp>)]" @default.
- W2150209025 doi "https://doi.org/10.1039/dt9870001163" @default.
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