95420-10-3Relevant academic research and scientific papers
Synthesis, spectral properties, and geometry of a metallophosphorane
Lattman,Morse,Cowley,Lasch,Norman
, p. 1364 - 1366 (2008/10/08)
1 has been synthesized according to the following reaction at -78°C in THF: (o-OC6H4O)2PCl + Na+Co(CO)3PPh3- → (o-OC6H4O)2PCo(CO)3PPh3 (1) + NaCl. The X-ray crystal structure of 1 has been determined and reveals two trigonal-bipyramidal (TBP) geometries connected at the axial position of the Co and equatorial position of the five-coordinate phosphorus. Due to the instability of the derivative, a structure of low precision was obtained; however, the overall geometry of the molecule is clearly established. The phosphorane P-Co bond is ca. 0.025 A? longer than the phoshine P-Co bond. The geometry about the five-coordinate phosphorus is close to that in TBP. The crystal is monoclinic with a space group P21/n. The unit cell parameters are a = 10.527 (3) A?, b = 18.824 (4) A?, c = 18.546 (3) A?, β = 105.87 (2)°, and Z = 4. This is the first structural characterization of a monodentate pentacoordinate phosphorus-metal derviative.
