Metal-phenoxyalkanoic acid interactions—12: The crystal and molecular structure of μ-aqua-di-μ-[(2-chlorophenoxy)ethanoato-(O,O′)]-bis[(2-chlorophenoxy)-ethanoato-bis(pyridine)nickel(II)]-water (1/1)☆

Add time:08/22/2019    Source:sciencedirect.com

The crystal structure of the pyridine adduct of nickel (2-chlorophenoxy)-ethanote, {[Ni2(2-CPA)4(py)4(H2O)] · H2O}, has been determined from three dimensional X-ray data at 293 K. Crystals of the complex are triclinic, space group P1, with two dimers in a unit cell of dimensions a = 21.740(5), b = 14.312(7), c = 9.044(2)Å, α = 96.69(4), β = 84.99(4), γ = 101.20(3)°. The structure was solved by direct methods and refined to 0.059 for 2682 ‘observed’ reflections. The dimer consists of two face-to-face NiO4N2 octahedra joined at their apical positions by a bridging water molecule [Ni(1)-Ow; 2.14(1)Å; Ni(2)-Ow, 2.10(1)Å; Ni(1)-Ôw-Ni(2), 116.9(4)°]. Two bidentate carboxyl groups of the 2-CPA molecules bridge the other two corners of the triangular face while the other two 2-CPA ligands are unidentate [Ni-O, 2.05(1)Å (mean)]. The coordination about each Ni is completed by two cis-related pyridine nitrogens [Ni-N; 2.11(1)Å (mean)]

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