Ligand exchange photochemistry of M-2(CO)(4)(mu-eta(5),eta(5)-C5H4CH2C5H4) (M = Fe or Ru) and thermal acetylene exchange of Ru-2(CO)(mu-CO)[mu-eta(1):eta(1)-(C6H5)(2)C-2](mu-eta(5),eta(5)-C5H4CH2C5H4) - The molecular structures of Ru-2(CO)(sigma-C6H5)(mu-CO)[mu-P(C6H5)(2)](mu-eta(5),eta(5)-C5H4CH2C5H4) and Ru-2(CO)(mu-CO)[mu-eta(1),eta(3)-C6H5C=C(C6H5)O]-(mu-eta(5),eta(5)-C5H4CH2C5H4) Academic Article