
TY  - JOUR
A1  - Hoskins, BF 
A1  - Steen, RJ 
T1  - Crystal and molecular structure of Octacarbonylbis(diphenylarsino)-methanedimanganese(0)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1983
VL  - 36
IS  - 4
SP  - 683
EP  - 694
KW  - 
UR  - https://doi.org/10.1071/CH9830683 
N2  - The crystal structure of the complex Mn2(CO)8(dam) (dam = Ph2AsCH2AsPh2) has been determined by three-dimensional X-ray diffraction methods. The crystals are triclinic, space group P1, with a 11.191(1), b 16.498(5), c 9.455(1) Å, a 93.64(2), &#946; 109.08(2), &#947; 89.36(2)º and contain two discrete, binuclear molecules of Mn2(CO)8(dam) per unit cell. The structure, solved by direct and Fourier methods, was refined by a least-squares procedure to R and Rw of 0.065 and 0.082 respectively for 1907 independent, statistically significant reflections collected by counter methods. The feature of particular interest in this compound is the accommodation of the bridging bidentate dam ligand [As.. .As separation 3.242(2) Å] across a shorter Mnº-Mnº bond [2.962(3) Å] which constrains the molecule so that a much less staggered configuration of the two manganese coordination octahedra is observed relative to the parent compound Mn2(CO)10, the rotation of the two equatorial planes in the former being 30º. 
ER  -

