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Synthesis and Platinum Coordination Chemistry of the Perfluoroalkyl Acceptor Pincer Ligand, 1,3-(CH<sub>2</sub>P(CF<sub>3</sub>)<sub>2</sub>)<sub>2</sub>C<sub>6</sub>H<sub>4</sub>
44
Citations
32
References
2007
Year
Inorganic CompoundInorganic ChemistryPlatinum Coordination ChemistryChloride AbstractionEngineeringBiochemistryNatural SciencesCoordination ComplexOrganometallic CatalysisMolecular ComplexChemistryRfpcp LigandsInorganic SynthesisBiomolecular Engineering-Type Pcp
The synthesis of perfluoroalkyl-substituted "pincer"-type PCP ligands, 1,3-C6H4(CH2P(Rf)2)2 (Rf = CF3, C2F5), and platinum coordination studies (Rf = CF3) are reported. 1,3-C6H4(CH2P(CF3)2)2 (CF3PCPH) reacts at ambient temperatures with (cod)Pt(Me)Cl (cod = 1,5-cyclooctadiene) and (cod)PtMe2 to afford unmetalated PCPH-bridged products [(CF3PCPH)Pt(Me)Cl]x and cis-[(CF3PCPH)PtMe2]2, respectively. cis-[(CF3PCPH)PtMe2]2 is soluble and has been spectroscopically and crystallographically characterized. Thermolysis of these compounds results in the loss of methane and the formation of metalated complexes (CF3PCP)PtCl and (CF3PCP)PtMe. Treatment of (CF3PCP)PtCl with MeMgBr provides an alternative route to (CF3PCP)PtMe. The carbonyl cation (CF3PCP)Pt(CO)+SbF6- (nu(CO) = 2143 cm(-1)) was readily prepared by chloride abstraction with AgSbF6 under 1 atm CO. nu(CO) data indicates that RfPCP ligands are electronically analogous to trans acceptor phosphine complexes such as trans-((C2F5)2PMe)2Pt(Me)(CO)+ (nu(CO) = 2149 cm-1).
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