Transition metal–carbon bonds. Part XXX. Internal metallations of platinum(II)-t-butyldi-o-tolylphosphine and -di-t-butyl-o-tolyphosphine complexes
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 754-763
- https://doi.org/10.1039/dt9720000754
Abstract
Platinum(II) complexes of the phosphines PBut(o-tolyl)2 and PBut 2(o-tolyl) have been prepared. The internally metallated compounds trans-[PtCl(P–C)L][(P′–C)= CH2C6H4PBut(o-tolyl) or (P″–C)= CH2C6H4PBut 2; L = PBut(o-tolyl)2 or PBut 2(o-tolyl)] are very readily formed by treating Na2PtCl4 or trans-[PtCl2(PhCN)2] with L. The metallation occurs at the tolyl-methyl of the ligand, L, in all cases. For complexes of the type [PtX(P′–C) PBut-(o-tolyl)2](X = Cl, NO3, or Me), metallation of the PBut(o-tolyl)2 ligand goes less readily to give the dimetallated complexes cis-[Pt(P′–C)2] or trans-[Pt(P′–C)2]. The tendency to metallate increases in the order of anionic ligands X = Cl < Me [graphic omitted] NO3. The compound trans-[Pt(P″–C)2] is prepared by heating [PtMe(P″–C)PBut 2(o-tolyl)]. Bridged complexes of the type [Pt2Cl2(P–C)2] are readily prepared and the chloride bridges replaced on treatment with silver carboxylate to give the compounds [Pt2X2(P–C)2](X = OAc or OBz). The chloride bridges are also split by various ligands (e.g. pyridine, PPh3, acetylacetonate, etc) giving monomeric species.Keywords
This publication has 0 references indexed in Scilit: