title: mu-Bis(diphenylphosphino)methane-P:P'-octacarbonyldimanganese(Mn-Mn) and its toluene hemisolvate.
abstract: 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.
authors.affiliation: Department of Chemistry, University of Oregon, Eugene, OR 97403-1253, USA.
authors.forename: G T
authors.initials: GT
authors.lastname: Baxley
authors.forename: A E
authors.initials: AE
authors.lastname: Stiegman
authors.forename: G F
authors.initials: GF
authors.lastname: Nieckarz
authors.forename: T J
authors.initials: TJ
authors.lastname: Weakley
authors.forename: D R
authors.initials: DR
authors.lastname: Tyler
authors.forename: J
authors.initials: J
authors.lastname: Gilbertson