Synthesis and structural characterization of fac-BrMn(CO)(3){PH(C6H5)(2)}(2)

In attempts to find appropriated methods for preparation of unstable sulfin yl and sulfonylphosphane complexes we have synthesized the diphenylphosphin e complexes of Mn(I), BrMn(CO)(4)PHPh2, (1) and BrMn(CO)(3)(PHPh2)(2) (2). Both should undergo electrophilic substitution in the presence of an adequa ted base. Parallel to the reactions of stabilization of phosphanes we have studied by means of x-ray analysis the structure of fac-BrMn(CO)(3)(PHPh2)( 2) (2). The compound crystallizes in the triclinic space group <P(1)over ba r>, a = 9.840(2), b = 11.207(2), c = 13.083(3) Angstrom, alpha = 72.00(3), beta = 69.59(3), gamma = 81.41(3)degrees, U = 1284.7(4) Angstrom(3), and Z = 2. In this complex the manganese atom shows an octahedral coordination ge ometry, with three carbonyl ligands in a fac arrangement, and one bromide a nd two diphenylphosphine ligands cis to each other.