The crystal and molecular structure of a new polymorph of carbonylhydridotris(triphenylphosphine)rhodium(I) having a Rh-H stretching absorption at 2013 cm-1

Article abstract of DOI:10.1007/BF01185550

A new polymorph of HRh(CO)(PPh3)3, with a υRh-H of 2013 cm^-1, has been isolated by crystallization from tert-butyl methyl ether/tetrahydrofuran.The crystals are monoclinic (space group P2₁/n), with a=21.48(2) Angstroem, b=14.92(2) Angstroem, c=14.52(1) Angstroem, β=107.95(8) deg.A final R value of 0.065 was obtained using 2243 reflections which had I_net > 2.5?(I_net).The structure of the new polymorph has a similar coordination geometry to the known polymorph, but a different conformation of one of the phenyl rings.