Preparation and structural characterization of Os(II) and Ru(II) complexes,MCl2(vdpp)2 [M = Os or Ru,vdpp = 1,1-bis(diphenylphosphino)ethene] |
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| Affiliation: | 1. Department of Chemistry, Marand Branch, Islamic Azad University, Marand, Iran;2. Department of Organic Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran;3. Department of Chemistry, Payame Noor University, Tehran, Iran;4. Department of Chemistry, Ahar Branch, Islamic Azad University, Ahar, Iran;5. Industrial Nanotechnology Research Center, Tabriz Branch, Islamic Azad University, Tabriz, Iran |
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| Abstract: | A reaction between Os2(O2CCH3)4Cl2 and vdpp [vdpp = 1,1-bis(diphenylphosphino) ethene] was investigated. When the reactants, in the presence of LiCl, were heated in toluene OsCl2(vdpp)2,1, was formed. In a similar reaction Ru2(O2CCH3)4Cl with vdpp afforded RuCl2(vdpp)2,2. The molecular structures of1 and2 were elucidated using X-ray crystallography. Single crystals of1 and2 grown from dichloromethanehexane crystallize in the space group P21/c with these cell dimensions: a = 11.046(2)Å, b = 18.168(3)Å, c = 12.678(3)Å, β = 110.24(2)° and V = 2387(2)Å3 for1 and a = 11.055(1)Å, b = 18.199(3)Å, c = 12.693(2)Å, β = 110.16(1)°, V = 2392(1)Å3 for2. The molecules of1 and2 are isostructural. Metal atoms reside on inversion centers relating the two halves of the molecules. The complexes are six-coordinate with two four-membered chelate rings and trans chlorine atoms. For RuCl2(vdpp)2 the P MP angle in the chelate ring is 73.13(2)° and the PCP angle in the chelate ring is 98.6(1)°. These values are 72.74(3)° and 97.9(2)°, respectively, for OsCl2(vdpp)2. There is a disordered dichloromethane solvent molecule present in the lattice and there are no unusual intermolecular contacts. |
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