Gorbachuk, E.V., Badeeva, E.K., Zinnatullin, R.G., Pavlov, P.O., Dobrynin, A.B., Gubaidullin, A.T., Ziganshin, M.A., Gerasimov, A.V., Sinyashin, O.G., Yakhvarov, D.G.
A new crystalline polymorph of known chloro(cyclopentadienyl)bis(triphenylphosphine)ruthenium(II) complex [RuCl(PPh3)2(η5-C5H5)] was obtained and characterized by various analytical methods including single-crystal and powder X-ray diffraction (XRPD) and differential scanning calorimetry (DSC) in combination with thermo-gravimetric analysis (TG-DSC). The obtained crystals of new polymorph are monoclinic, space group P21/n, with a = 11.125(4), b = 19.184(6), c = 15.946(5) Å, α = 90, β = 100.174(5), γ = 90, and Z = 4. It has been found that real melting point of the complex (M.p. = 252-253 °C) can be determined only in inert atmosphere while an apparent melting is observed in the range 142-150 °C due oxygen promoted oxidative dissociation of triphenylphosphine ligand. © 2016 Elsevier B.V. All rights reserved.
Journal of Organometallic Chemistry, Volume 805, 1 March 2016, Pages 49-53