93349-03-2Relevant academic research and scientific papers
Model intermediates for rhodacarborane catalysis: Isolation of a disubstituted closo-bis(triphenylphosphine)hydridorhodacarborane
Hewes, John D.,Thompson, Michael,Frederick Hawthorne
, p. 13 - 17 (1985)
Reaction of a carbon-disubstituted [nido-7-(R)-9-(R′)-7,9-C2B9H10] - (R = CH3; R′ = C6H5) (V) ion with [(PPh3)3RhCl] in ethanol at the reflux temperature for 24 h yielded [closo-2,2-(PPh3)2-2-H-1-(CH3)-7-(C 6H5)-2,1-7-RhC2B9H9] (VI) rather than the corresponding exo-nido tautomer expected. In addition to spectroscopic characterization (IR, NMR), the molecular structure of VI was determined crystallographically for [C45H49B9P2Rh·C 4H8O·C2H5OH]: Mr = 970.215; monoclinic; space group P21/n; a = 24.694 (6) A?, b = 18.714 (6) A?, c = 12.117 (2) A?, β= 112.33 (2)°, V = 5180 (2) A?3, and Z = 4. The structure was refined to R = 0.067 and Rw = 0.081 using 3421 reflections (of 6396 reflections measured) with 2θ 43.0° (Mo Kα radiation).
