Triiron and Triruthenium Carbonyl Clusters Bearing Bridging Long Chain Diphosphine and Capping Chalcogenido Ligands |
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| Authors: | Email author" target="_blank">Shariff?E?KabirEmail author M?Arzu?Miah M?Abdur?Rahim Sonia?Sultana G?M?Golzar?Hossain Ebbe?Nordlander Edward?Rosenberg |
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| Institution: | (1) Department of Chemistry, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh;(2) Department of Chemistry, Cardiff University, P.O. Box 912, Park Place, Cardiff, CF, 10 3TB, UK;(3) Inorganic Chemistry, Center for Chemistry and Chemical Engineering, Lund University, Box-124, SE-22100 Lund, Sweden;(4) Department of Chemistry, University of Montana, Missoula, MT 59812, USA |
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| Abstract: | Treatment of Ru3(CO)12 with dpphSe2 (dpph = 1,6-bis(diphenylphosphino)hexane) in refluxing toluene in the presence of Me3NO afforded two new compounds, Ru3(CO)7( -CO)(3-Se)(-dpph) (1) and Ru3(CO)7(3-Se)2(-dpph) (2). A similar reaction of Ru3(CO)12 with dpppeSe2 (dpppe = 1,5-bis(diphenylphosphino)pentane) gave exclusively Ru3(CO)7(3-Se)2(-dpppe) (3). Treatment of Ru3(CO)12 with dpphS2 and dpppeS2 at 110°C in the presence of Me3NO afforded Ru3(CO)7(3-S)2(-dpph) (4) and Ru3(CO)7(3-S)2(-dpppe) (5), respectively. Reactions of Fe3(CO)12 with dpphSe2 and dpppeSe2, under identical conditions, afforded Fe3(CO)7(3-Se)2(-dpph) (6) and Fe3(CO)7(3-Se)2(-dpppe) (7), respectively. Compounds 1–7 were characterized spectroscopically and the molecular structures of compounds 1–4 were determined by single crystal X-ray crystallography. The core of 1 contains an equilateral triangle of ruthenium atoms with one capping selenium, one bridging dpph, one doubly bridging carbonyl and seven terminal carbonyl ligands. Complexes 2–4 have a square-pyramidal structure with two metal and two chalcogenide atoms alternating in the basal plane and the third metal atom at the apex of the pyramid, and belong to the family of well-known nido clusters with seven skeletal electron pairs. |
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| Keywords: | Ruthenium iron chalcogenide 1 5-bis(diphenylphosphino)pentane 6-bis(diphenylphosphino)hexane crystal structures |
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