Synthesis, characterization and crystal structure of [Pt(Me)(dppe){η1-CH(PPh3)(COOEt)}]BF4. An example of overcrowded molecule and correlated properties

The complex [Pt(Me)(dppe){η1-CH(PPh3)(COOEt)}]BF4 has been synthesized and characterized spectroscopically and structurally. It crystallizes in the space group P21/n, with lattice constants a=14.525(3) Å, b=14.931(3) Å, c=21.921(4) Å, β=103.47(3)°. The X-ray analysis revealed a particularly overcrowded molecular structure containing high stereochemical constraints. The structural features account for specific chemical and physical properties of this compound, thus representing an interesting example of applied crystallography.