Synthesis and structure characterization of [HgCl(η5-C5H3C(CH3)=N-3C5H4N)Fe(η5-C5H5)]•1/2CH2Cl2

A new cyclomercurated ferrocenylketimine containing pyridyl ring ([HgCl(eta(5)-C5H3C(CH3)=N-3-C5H4N)Fe(eta(5)-C5H5)].(1)/2CH2Cl2, Mr = 581.66) was synthesized and its molecular structure has been confirmed by IR, elemental analysis, H-1-NMR and X-ray crystal structure analysis. It is of monoclinic system, space group P2(1)/c with a = 9.213(2), b = 17.479(4), c = 11.510(2) Angstrom, beta = 100.32(3)degrees, V = 1823.7(6) Angstrom(3), Z = 4, C17.5H16Cl2FeHgN2, D-c = 2.119 g/cm(3), mu = 9.497 mm(-1), F(000) = 1100, R = 0.0436 and wR = 0.0987. The independent reflections are 3527, of which 3153 with I greater than or equal to 2sigma(I) were observed. The compound contains a five-membered metallocycle. The mercury atom is bonded with the 2-position of substituted cyclopentadienyl ring (Cp), and coordinated weakly to the N atom of imino group. The pyridyl ring is almost perpendicular to the substituted Cp which is nearly coplanar with the metallocycle. The Hg(1)-C(1) and Hg(1)-Cl(1) bond lengths are 2.050(8) and 2.321(2) Angstrom, respectively.