Investigations on organotin,organolead, lead(IV), and lead(II) dithiolates |
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| Authors: | Karin Grätz Friedo Huber Arturo Silvestri Giuseppe Alonzo Renato Barbieri |
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| Institution: | Lehrstuhl für Anorganische Chemie II, Universität Dortmund, Postfach 500 500, D-4600 Dortmund 50 F.R.G.;Gruppo di Chimica dei Composti Organometallici, Istituto di Chimica Generale, Università di Palermo, 26-28, Via Archirafi, I-90123 Palermo Italy |
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| Abstract: | Bis(triorganometal) 1,2-dithiolates (R3M)2S2R′ (HS)2R′ = C7H8S2 for toluene-dithiol-3,4 (H2TDT); M = Sn, Pb; R = Ph; or (HS)2R′ = C10H14S2 for 1,2-dimethyl-4,5-bis(mercaptomethyl)benzene (H2DBB); M = Sn, R = CH3, C6H5; M = Pb, R = C6H5], diorganometal 1,2-dithiolates R2MS2R′ (HS)2R′ = C6H6S2 for 1,2-dimercaptobenzene (H2DMB); M = Pb, R = CH3, C2H5, C6H5; or (HS)2R′ = H2TDT; M = Sn, R = CH3, C6H5; M = Pb, R = C6H5; or (HS)2R′ = H2DBB; M = Sn, R = CH3, C6H5; M = Pb, R = CH3, C2H2, C6H5; or (HS)2R′ = C8H6N2S2 for 2,3-dimercaptoquinoxaline (H2QDT); M = Pb, R = C6H5] and some lead(IV) and lead(II) dithiolates Pb(S2R′)n (HS)2R′ = H2DMB, n = 2; (HS)2R′ = H2TDT, n = 2; (HS)2R′ = H2DBB, n = 1 or 2] have been prepared. Vibrational, 1H NMR, and Mössbauer spectroscopic data are consistent with pentacoordination of tin in R2SnTDT and with tetracoordination of tin in R2SnS2R′ and (R3Sn)2S2R′ in the solid state. The soluble compounds are monomeric in solution. Coupling constants for the methyltin compounds indicate tetracoordination in solution. |
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