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Synthesis, X-ray structure and properties of (η6-p-cymene)ruthenium(II) schiff-base complexes of vinylpyridine and vinylimidazole ligands
Roy, Sudeshna,Sudha, Chellamma,Chakravarty, Akhil R.
, p. 1045 - 1051 (2007/10/03)
Complexes of the formulation [(η6-p-cymene)Ru(O-2-C6H4-CH=NC 6H4-4-CH3)(L)](ClO4), where L is γ-picoline, 4-vinylpyridine, 1- methylimidazole and 1-vinylimidazole have been prepared and characterised. The molecular structure of the vinylpyridine adduct has been determined by X-ray crystallography. The crystal belongs to the monoclinic space group P21 with me following cell dimensions for the C31H33ClN2O5Ru(M=650.11): a= 10.890(2)A, b = 22.295(9)A, c = 12.933(2)A, β= 109.30(2)°3, V = 2964(1)A3, Z = 4; Dc = 1.457g cm-3, λ(Mo-Kα) = 0.7107 A; μ(Mo-Kα) = 6.61 cm-1; T= 293 K; R = 0.0359 (wR2 = 0.0981) for 4819 reflections with I > 2σ(I). The structure shows the non-bonding nature of the double bond of the 4-vinylpyridine ligand in the complex in which the metal is bonded to the η6-p-cymene, the N, O-bidentate chelating schiff-base and the unidentate N- donor pyridine ligands.
