Synthesis, formation mechanism, and crystal structure of the nitrosoruthenium(II) nitrochloride complex fac-K2[RuNO(NO2)2Cl3]

Procedures for synthesis of the first nitrochloride complex of nitrosoruthenium(II), fac*-K-2[RuNO(NO2)(2)Cl-3], are described and the mechanism of its formation is suggested. The compound was investigated by IR spectroscopy and X-ray phase and X-ray diffraction analyses. Crystal data for Cl3N3O5K2Ru: a = 7.050(1), b = 7.524(2), c = 10. 125(2) Angstrom, alpha = 90.44(3), = 103.17(3), gamma = 90.51(3)degrees, V = 522.9 Angstrom(3), space group P (1) over bar, Z = 2, d(calc) = 2.589 g/cm(3). The structure consists of the complex anions fac-[RuNO(NO2)(2)Cl-3](2-) and K+ cations. The complex crystallizes as triclinic plates and red orange prisms; it is well soluble in water, not readily soluble in KCl solutions, and insoluble in ethanol and acetone; the complex is stable when stored in air.