
%0 Journal Article
%A Bruce, MI 
%A Low, PJ 
%A Skelton, BW 
%A Tiekink, ERT 
%A Werth, A 
%A White, AH 
%T Cyclopentadienyl-Ruthenium and -Osmium Chemistry. XL. X-Ray Crystal Structures of MBr (PPh<sub>3</sub>)<sub>2</sub>(&#951;-C<sub>5</sub>H<sub>5</sub>).CH<sub>2</sub>Cl<sub>2</sub> (M = Ru, Os)
%J Australian Journal of Chemistry
%D 1995/11/01
%V 48
%N 11
%P 1887-1892
%K 
%R https://doi.org/10.1071/CH9951887
%U https://www.publish.csiro.au/paper/CH9951887 
%X The crystal and molecular structures of MBr (PPh3)2(&#951;-C5H5).CH2Cl2 (M = Ru and Os) have been determined. A revised synthesis of the bromo osmium complex is given. The coordination geometry about the metal atom is based on a distorted octahedron with one face being occupied by the cyclopentadienyl group [average Ru -C(Cp) 2.214(3), Os-C(Cp) 2.177(3)&#506;] and the other by the bromide [ Ru -Br 2.5683(8), Os-Br 2.5438(9)&#506;] and the two phosphorus atoms [ Ru -P 2.323(2), 2.329(1); Os-P 2.290(2), 2.297(2)&#506;]. Structural parameters are compared with those of the corresponding chloro complexes and differ only minimally. Crystals of MBr (PPh3)2(&#951;-C5H5).CH2Cl2 are triclinic, space group P&#299; , with unit cell dimensions ( Ru [Os]): a 14.374(5) [14.276(4)], b 14.057(4) [13.959(3)], c 10.012(5) [9.903(3)]&#506;, &#945; 99.43(3) [99.79(2)], &#946; 105.60(3) [105.74(2)], &#947; 100.42(3) [100.39(2)]&#176;, V 1868(1) [1817.7(9)] &#506;3, Z 2. The structures were refined by a full-matrix least-squares procedure to R 0.050 [0.036] for 7365 [5108] reflections with I &#8805; 3&#963;(I). 
