Photochemically Activated Phosphorus-Carbon Bond Cleavage in the Binuclear Ruthenium Complex [cyclic] Ru2(CO)6(bpcd). Redox Reactivity, Molecular Orbital Properties, and X-ray Diffraction Structures of [cyclic] Ru2(CO)6(bpcd) and [cyclic] Ru2(CO)6[.mu.-C:C(PPh2)C(O)CH2C(O)](.mu.2-PPh2) - Simon Bott (Organometallics, 1995)