72347-02-5Relevant academic research and scientific papers
Preparation and molecular structure of a heterobimetallic acetylene complex, μ-C6H5C≡CC6H5H[(CO) 3Co-Ni(η5-C5H5)]
Freeland, Brian H.,Hux, Janet E.,Payne, Nicholas C.,Tyers, Kenneth G.
, p. 693 - 696 (2008/10/08)
The heterobimetallic acetylene complex μ-(diphenylacetylene)-(tricarbonylcobaltio)(η 5-cyclopentadienyl)nickel, (μ-C6H5C≡CC6H5)[(CO) 3Co-Ni(η5-C5H5)], has been separated from the reactions of (μ-C6H5C≡CC6H5)[Ni 2(η5-C5H5)2] with Co2(CO)8, (μ-C6H5C≡CC6H5)[Co 2(CO)6] with nickelocene, (μ-C6H5C≡CC6H5)[Co 2(CO)6] with (μ-C6H5C≡ CC6H5)[Ni2(η5-C 5H5)2] and (η5-C5H5)2Ni 2(CO)2, and diphenylacetylene with (η5-C5H5)NiCo3(CO)9. (μ-C6H5C≡ CCH3)[(CO)3Co-Ni(η5-C5H 5)] has been prepared in similar fashion. The compounds have been characterized by mass spectrometry, infrared spectroscopy, and NMR studies. A single-crystal X-ray structure determination of the diphenylacetylene compound shows the acetylene bonded perpendicularly to the metal-metal bond. Crystals are orthorhombic, of space group Pbca, with unit cell dimensions a = 15.799 (4), b = 21.460 (5), and c = 11.608 (3) A?, with Z = 8. Refinement on F, using 3062 unique diffractometer data, converged to a final agreement factor R = 0.040. The Ni-Co bond distance is 2.3656 (8) A?, and the acetylene is distorted significantly from linearity (mean deviation 40.1 (1)°).
