Hydrido-tetrakis tertiary phosphine diplatinum Cations

n-HYDRIDO-TETRAKIS(TERTIARY PHOSPHINE)DIPLATINUM CATIONS 

Submitted by STANISLAV CHALOUPKA and LUIGI M. VENANZI Checked by ROBERT L. COWAN and WILLIAM C. TROGLER  

Strong direct metal-metal interactions. An analogy can be drawn here with the molecule which should have a regular triangular shape in its ground 

Three types of binuclear trihydrido diplatinum cationic complexes are known (a) the monohydrido-bridged trans-tram complexes (Type (b) the trans-cis dihydrido-bridged complexes (Type II), and the cis-cis dihydrido-bridged complexes (Type 111).  

Compounds of Type 1 in which one or both the terminal hydride ligands have been replaced by aryl groups are also known, as are compounds of Type II, which contain a phenyl group instead of the terminal hydride ligand. 

Strong direct metal-metal interactions. An analogy can be drawn here with the molecule H3 which should have a regular triangular shape in its ground state. The borane nomenclature of closed and open interactions has also been carried over into transition metal chemistry.  

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