mu-Bis(diphenylphosphino)methane-P:P'-octacarbonyldimanganese(Mn-Mn) and its toluene hemisolvate.
The Mn-Mn bonds in the two independent molecules of the unsolvated title compound, [Mn(2)(C(25)H(22)P(2))(CO)(8)], (I), are 2.9714 (7) and 2.9746 (7) A. This bond is distinctly shortened in the toluene hemisolvate, [Mn(2)(C(25)H(22)P(2))(CO)(8)] x 0.5C(7)H(8), (II), to 2.9338 (14) A and this shortening is accompanied by an increase in magnitude of the P-Mn-Mn-P torsion angle [26.93 (3) and 28.44 (3) degrees in (I), and 33.25 (7) degrees in (II)], while the P...P 'bite' is much less affected [3.092 (2) and 3.099 (2) A in (I), and 3.091 (3) A in (II)]. The toluene solvate molecule in (II) lies on a twofold axis.
Baxley
G T
GT
Department of Chemistry, University of Oregon, Eugene, OR 97403-1253, USA.
Stiegman
A E
AE
Nieckarz
G F
GF
Weakley
T J
TJ
Tyler
D R
DR
Gilbertson
J
J