Please use this identifier to cite or link to this item: https://doi.org/10.1039/c2dt31637d
Title: A novel structural rearrangement reaction of dialkylated derivatives of [Pt 2(μ-S) 2(PPh 3) 4] involving Pt-C bond formation
Authors: Ujam, O.T.
Devoy, S.M.
Henderson, W.
Nicholson, B.K.
Hor, T.S.A. 
Issue Date: 7-Nov-2012
Citation: Ujam, O.T., Devoy, S.M., Henderson, W., Nicholson, B.K., Hor, T.S.A. (2012-11-07). A novel structural rearrangement reaction of dialkylated derivatives of [Pt 2(μ-S) 2(PPh 3) 4] involving Pt-C bond formation. Dalton Transactions 41 (41) : 12773-12780. ScholarBank@NUS Repository. https://doi.org/10.1039/c2dt31637d
Abstract: Reaction of [Pt 2(μ-S) 2(PPh 3) 4] with the dialkylating agents ClCH 2C(O)CH 2Cl or ClCH 2C(NNHC(O)NH 2)CH 2Cl gives the dicationic di-μ-thiolate complexes [Pt 2{μ-SCH 2C(O)CH 2S)(PPh 3) 4] 2+ or [Pt 2{μ-SCH 2C(NNHC(O)NH 2)CH 2S} (PPh 3) 4] 2+, isolated as BPh 4 - salts and characterised by ESI mass spectrometry, NMR spectroscopy and single-crystal X-ray crystallography. Treatment of the complex [Pt 2{μ-SCH 2C(O)CH 2S)(PPh 3) 4] 2+, which contains a [6.6.4] bicyclic system, with hydroxide ions results in deprotonation of a CH 2 group and rearrangement of the resulting monocation, giving [Pt 2(μ-SCH 2C(O)CHS}(PPh 3) 4] +, isolated as its PF 6 - salt. An X-ray structure determination shows the complex to have a novel rearranged [6.5.5] bicyclic system containing a Pt-S-Pt-S-C five-membered ring with a Pt-C bond. The alkyl ligand has a high trans-influence, manifest in a long trans Pt-P bond and small 1J(PtP) coupling constant to the trans PPh 3 ligand. Reaction of [Pt 2(μ-S) 2(PPh 3) 4] with the 2,4-dinitrophenylhydrazone derivative of 1,3-dichloroacetone leads to the closely related complex [Pt 2{μ-SCH 2C(NNHAr)CHS} (PPh 3) 3Cl] [Ar = C 6H 3(NO 2) 2] in which a PPh 3 ligand is substituted by a chloride. © 2012 The Royal Society of Chemistry.
Source Title: Dalton Transactions
URI: http://scholarbank.nus.edu.sg/handle/10635/92983
ISSN: 14779226
DOI: 10.1039/c2dt31637d
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