17362-77-5Relevant academic research and scientific papers
C-Pt(IV) activation in new trimethylplatinum(IV) complexes: Nucleophilic attack at metal-carbon bond
Romero, Patricio,Valderrama, Mauricio,Contreras, Raúl,Boys, Daphne
, p. 102 - 110 (2003)
Reaction of the tetranuclear complex [Me3PtI]4 with the ligand o-Ph2P(E)C6H4SMe (E=S, Se) in a 1:4 molar ratio yields the mononuclear neutral complexes [Me3PtI{η2-MeSC6 H4P(E) Ph2-S,S}] (E=S(1), Se(2)). Iodide abstraction from these compounds with AgPF6 in the presence of a ligand L (PPh3, py) leads to cationic complexes of the type [Me3Pt(η2-MeSC6H4P(E) Ph2-E,S)L]PF6 [E=S, L=PPh3 (3), Py (4); E=Se, L=Py (5)]. However, using complex 2 and the ligand PPh3 under identical conditions induces a reductive elimination reaction affording the Pt(II) complex [MePt(η2-MeSC6 H4PPh2- P,S)(PPh3)]PF6 (6). Reactions of complexes 3 and 4 with NaI reveal a nucleophilic attack of the iodide to one of the methyl groups bonded to the platinum center generating a series of subsequent side reactions. Complex [Me3Pt{η2- MeSC6H4P(S) Ph2-S,S}(py)]PF6 ·CH2 Cl2 (4) was additionally characterised by X-ray diffraction. The platinum atom exhibits a distorted octahedral coordination, bonded to three methyl carbon atoms in a facial arrangement; a bidentate chelate S,S′-bonded ligand and a nitrogen atom of the pyridine ligand complete the metal coordination sphere.
