Cationic cyclic carbene complexes of iridium(III), nickel(II), palladium(II), and platinum(II)
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 1,p. 102-105
- https://doi.org/10.1039/dt9740000102
Abstract
Reaction of the 2-chloro-derivatives of 5-methyl-1,3-thiazole, benzthiazole, and benzoxazole with IrCl(CO)(PMe2Ph)2 affords IrIII complexes which on protonation yield cationic carbene complexes [IrCl2(CO)(PMe2Ph)2(L)]+(L = [graphic omitted], [graphic omitted], [graphic omitted]). Treatment of IrCl(CO)(PMe2Ph)2 with the N-methyl salt of 2-chloro-5-methyl-1,3-thiazole, [Cl[graphic omitted]][BF4], affords the carbene complex [IrCl2(CO)(PMe2Ph)2{[graphic omitted]}][BF4]. Similar oxidative-addition of [Cl[graphic omitted]][BF4] to Pt(PEt3)2(stilbene), Pt(PMePh2)4, PdL4(L = PPh3, PMePh2) or Ni(PPh3)4 gives cationic carbene complexes of PtII, PdII, and NiII. The complex [PtCl{[graphic omitted]}(PEt3)2][BF4] was obtained by treating PtCl([graphic omitted])(PEt3)2 with fluoroboric acid. Some chemical and spectroscopic properties of the new complexes are discussed.Keywords
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