Five co-ordination at platinum(II) in a water soluble tertiary phosphine complex: crystal structure of [Pt(PTA)3(I)2]·CH3OH

A five co-ordinate platinum(II) complex containing the water soluble 1,3,5-triaza-7-phosphaadamantane ligand (PTA) [Pt(PTA)3(I)2] (1), was characterised in the solid state and aqueous solution. A re-calculation of the Tolman cone angle for the PTA ligand, as well as preliminary equilibrium constants for the formation of 1, is given.