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  • Title: Di-mu-chlorido-bis[chlorido(4'-p-tolyl-2,2':6',2''-terpyridine-kappa3N,N',N'')nickel(II)]: a supramolecular system constructed by C-H...Cl interactions.
    Author: Chen YL, Li BZ, Yang P, Wu JZ.
    Journal: Acta Crystallogr C; 2009 Jul; 65(Pt 7):m238-40. PubMed ID: 19578253.
    Abstract:
    The title complex, [Ni(2)Cl(4)(C(22)H(17)N(3))(2)], was synthesized solvothermally. The molecule is a centrosymmetric dimer with the unique Ni(II) centre in a distorted octahedral N(3)Cl(3) coordination environment. The chloride bridges are highly asymmetric. In the 4'-p-tolyl-2,2':6',2''-terpyridine ligand, the p-tolyl group is perfectly coplanar with the attached pyridine ring, and this differs from the situation found in previously reported compounds; however, there are no pi-pi interactions between the ligands. The terminal Cl atom forms four intermolecular C-H...Cl hydrogen bonds with one methyl and three methine groups. The methyl group also forms intermolecular C-H...pi interactions with a pyridine ring. These nonclassical hydrogen bonds extend the molecule into a three-dimensional network.
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