
%0 Journal Article
%A Commons, CJ 
%A Hoskins, BF 
%T The crystal and molecular stucture of &#956;-Bis(diphenylarsino)methanehexacarbonyldi-&#956;-chloro-dirhenium(I)-n-hexane (4/1)
%J Australian Journal of Chemistry
%D 1975/06/01
%V 28
%N 6
%P 1201-1209
%K 
%R https://doi.org/10.1071/CH9751201
%U https://www.publish.csiro.au/paper/CH9751201 
%X The crystal and molecular structure of the n-hexane solvate of &#956;- bis(diphenylarsino)methane-hexacarbonyldi-&#956;-chloro-dirhenium(I), Re2(CO)6(Ph2AsCH2AsPh2)Cl2, has been determined by three-dimensional X-ray diffraction methods. The complex crystallizes in the space group P&#299; with a 15.763(1), b 19.077(1), c 12.233(1) &#506; and &#945; 88.745(10), &#946; 110.506(5), &#947; 92.900(6)°. The structure was solved by conventional Patterson and Fourier methods and refined by a block-diagonal least- squares method to R and Rw of 0.045 and 0.054, respectively, for 7061 independent statistically significant reflections collected by counter methods. The crystal consists of discrete molecules of the complex and n-hexane held together by van der Waals forces. There are two molecules of the dirhenium complex in the crystallographic asymmetric unit with the n-hexane molecule situated about a site of symmetry &#299;. The binuclear rhenium complex contains bridging halogen atoms and a bridging diarsine ligand. Three carbonyl ligands are also bonded to each rhenium atom, giving the metal atoms approximately octahedral environments. The average Re-As, Re-Cl, and Re-C bond lengths are 2.58, 2.52, and 1.89 &#506; respectively. 
