Cyclooctadienemethylplatinum complexes: synthesis, reactivity, molecular structure and spectroscopic properties of the organometallic hydroxoplatinum(II) complex [(COD)PtMe(OH)]

Organometallic complexes of the type [(COD)PtMeL] (COD=1,5-cyclooctadiene, L=Cl, I, OH, Me, CH2C(O)CH3, CCPh, pyridine, N-methylpyrazinium) and the dinuclear complex [{(COD)PtMe}2(μ-CCCC)] were prepared and characterised by 1H-NMR spectroscopy. The crystal structures for the complexes with L=Cl, OH and Me are reported. The complex [(COD)PtMe(OH)] is a unique example of a platinum complex containing an olefin and a hydroxy ligand on the same metal centre. It reacts with CH acidic substrates to form PtC bonds. Representative reactions with acetone, phenylacetylene and 1,3-butadiyne and the corresponding products are reported.