Abstract
The crystal structure of a new mixed-ligand complex [Co(DH)(o-phen)2][BF4]2 · 2H2O is determined by X-ray diffraction. The crystal is monoclinic, a = 12.2081(11) A, b = 14.3474(9) A, c = 17.7393(16) A, β = 104.95(1)°, and space group P21/c. The coordination octahedron of Co3+ is formed by two nitrogen atoms of the dimethylglyoxime molecule and four nitrogen atoms of o-phenanthroline molecules. The dimethylglyoxime molecule is singly deprotonated and acts as DH−. The mean Co-N distances for dioxime and o-phenanthroline are 1.911 and 1.964 A, respectively. The key role in the formation of the crystal structure is played by [BF4]− outer-sphere anions and crystallization water molecules, which form an extended hydrogen-bond system.
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