201791-76-6Relevant academic research and scientific papers
Ligand exchange photochemistry and thermal acetylene exchange.
Bitterwolf, Thomas E.,Haener, Jay L.,Shade, Joyce E.,Rheingold, Arnold L.,Yap, Glenn P.A.
, p. 23 - 33 (1997)
Photolysis of Fe2(CO)4( μ-η5,η5-C5H4CH2C5H4) in the presence of phosphines or phosphites results in the formation of simple carbonyl substitution products Fe2(CO)( μ-CO)2L(μ-η5,η5-C5H4CH2C5H4) or Fe2(μ-CO)2L2(μ-η5,η5-C5H4CH2C5H4). Acetylenes react photochemically with the diiron compound to give vinylketone-bridged derivatives of the form Fe2(CO)( μ-CO)[ μ-η1:η3-RC=C(R)CO](μ,-η5,η5-C5H4CH2C5H4), where R = CH3O2C and C6H5. Reaction of Ru2(CO)4(μ-η5,η5-C5H4CH2C5H4) with triphenylphosphine under photochemical conditions resulted in loss of two carbon monoxide ligands and P-C insertion by ruthenium to yield Ru2(CO)(σ-C6H5)(μ-CO)[μ-P(C6H5)2](μ-η5,η5-C5H4CH2C5H4). Photolysis of Ru2(CO)4(μ-η5,η5-C5H4CH2C5H4) with diphenylacetylene gave the previously reported Ru2(CO)2(μ-CO)[μ-η1:η1-(C6H5)2C2](μ-η5,η5-C5H4CH2C5H4) and an air oxidation product, Ru2(CO)(μ-CO)[μ-η1:η3-C6H5C=C(C6H5)O](μ-η5,η5-C5H4CH2C5H4). The diphenylacetylene derivative underwent acetylene exchange, but did not undergo exchange with triphenylphosphine. All compounds have been characterized by spectroscopic methods, elemental analysis and/or mass spectroscopy. The molecular structures of two ruthenium compounds were determined by X-ray crystallography. Ru2(CO)(σ-C6H5)(μ,-CO)[μ-P(C6H5)2](μ-η5,η-C5H4CH2C5H4): monoclinic, P21/c, a = 13.902(3) A, b = 13.283(3) A, c = 14.426(4) A, β = 101.62(2)°, V = 2609(1) A3, z = 4, R(F) = 3.98%. Ru2(CO)μ-CO)[μ-η1:η3-C6H5C=C(C6H5)O](μ-η5,η5-C5H4CH2C5H4): orthorhombic, Pccn, a = 15.000(4)A, b = 15.662(4)A, c = 19.053(4)A, V = 4476(2) A3, z = 8, R(F) = 3.05%.
