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https://doi.org/10.1016/j.ica.2009.09.045
Title: | Thallium(III) complexes of the metalloligands [Pt2(μ-S)2(PPh3)4] and [Pt2(μ-Se)2(PPh3)4] | Authors: | Rose, S.L. Henderson, W. Nicholson, B.K. Hor, T.S.A. |
Keywords: | Crystal structures Electrospray mass spectrometry Platinum complexes Sulfide ligands Thallium complexes |
Issue Date: | 1-Dec-2009 | Citation: | Rose, S.L., Henderson, W., Nicholson, B.K., Hor, T.S.A. (2009-12-01). Thallium(III) complexes of the metalloligands [Pt2(μ-S)2(PPh3)4] and [Pt2(μ-Se)2(PPh3)4]. Inorganica Chimica Acta 362 (15) : 5237-5244. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ica.2009.09.045 | Abstract: | Reactions of [Pt2(μ-S)2(PPh3)4] with the diarylthallium(III) bromides Ar2TlBr [Ar = Ph and p-ClC6H4] in methanol gave good yields of the thallium(III) adducts [Pt2(μ-S)2(PPh3)4TlAr2]+, isolated as their BPh4 - salts. The corresponding selenide complex [Pt2(μ-Se)2(PPh3)4TlPh2]BPh4 was similarly synthesised from [Pt2(μ-Se)2(PPh3)4], Ph2TlBr and NaBPh4. The reaction of [Pt2(μ-S)2(PPh3)4] with PhTlBr2 gave [Pt2(μ-S)2(PPh3)4TlBrPh]+, while reaction with TlBr3 gave the dibromothallium(III) adduct [Pt2(μ-S)2(PPh3)4TlBr2]+[TlBr4]-. The latter complex is a rare example of a thallium(III) dihalide complex stabilised solely by sulfur donor ligands. X-ray crystal structure determinations on the complexes [Pt2(μ-S)2(PPh3)4TlPh2]BPh4, [Pt2(μ-S)2(PPh3)4TlBrPh]BPh4 and [Pt2(μ-S)2(PPh3)4TlBr2][TlBr4] reveal a greater interaction between the thallium(III) centre and the two sulfide ligands on stepwise replacement of Ph by Br, as indicated by shorter Tl-S and Pt⋯Tl distances, and an increasing S-Tl-S bond angle. Investigations of the ESI MS fragmentation behaviour of the thallium(III) complexes are reported. © 2009 Elsevier B.V. All rights reserved. | Source Title: | Inorganica Chimica Acta | URI: | http://scholarbank.nus.edu.sg/handle/10635/95209 | ISSN: | 00201693 | DOI: | 10.1016/j.ica.2009.09.045 |
Appears in Collections: | Staff Publications |
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