Synthesis and Crystal Structure of a Ruthenium(II) Compound of Dinitrogen

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The title compound [Ru(bph)(PPh3)2(N2)]·(PF6)·1.5CH2Cl2 (bph = N-(benzoyl)- N?-(picolinylidene)-hydrazine) has been prepared and characterized by X-ray diffraction analysis. It crystallizes in the monoclinic system, space group P21/n with a = 13.5201(6), b = 15.5078(6), c = 25.0656(13) ?, β = 100.257(3)°, C50.50H43Cl3F6N5OP3Ru, Mr = 1150.23, V = 5171.4(4) ?3, Z = 4, F(000) = 2332, Dc = 1.477 g/cm3 and μ(MoKα) = 0.615 mm-1. The structure was refined to R = 0.0524 and wR = 0.1398 for 8060 observed reflections (I > 2σ(I)). The Ru-N2 and N(N bond distances are 1.919(4) and 1.133(5) ?, respectively.
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