title: Unexpected Formation of Early Late Heterobimetallic Complexes from Transition Metal Frustrated Lewis Pairs.
abstract: Reaction of transition metal "frustrated" Lewis pair compounds of the type [Cp2Zr(Me)(OC(CF3)2CH2P(t)Bu2)] with the low valent platinum species [Pt(norbornene)3] leads to the unexpected formation of a heterobimetallic species [Cp2Zr{ Pt(Me)}(OC(CF3)2CH2 P(t)Bu2)]. Single crystal X-ray analysis reveals an unusual T-shaped geometry at the platinum center, with a relevant C-Pt-P angle of 163.3(3)°. Treatment of this compound with PMe3 yields [Pt(PMe3)4] and regenerates the zirconium precursor. Treatment with [(Et2O)2H][B(C6F5)4] protonates off the methyl ligand to give an ether adduct at platinum. Analogous observations are made with titanium-platinum species. We propose the chemistry is best rationalized as a formal insertion of Pt(0) into a Zr-C or Ti-Cl bond.
authors.affiliation: School of Chemistry, University of Bristol , Cantock's Close, Bristol, United Kingdom.
authors.forename: Andy M
authors.initials: AM
authors.lastname: Chapman
authors.affiliation: School of Chemistry, University of Bristol , Cantock's Close, Bristol, United Kingdom.
authors.forename: Stephanie R
authors.initials: SR
authors.lastname: Flynn
authors.affiliation: School of Chemistry, University of Bristol , Cantock's Close, Bristol, United Kingdom.
authors.forename: Duncan F
authors.initials: DF
authors.lastname: Wass