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(Nitrato-?(2) O,O')bis-(1,10-phenanthroline-?(2) N,N')copper(II) tricyano-methanide.

ABSTRACT: The title compound, [Cu(NO3)(C12H8N2)2][C(CN)3], is formed of discrete [Cu(NO3)(phen)2](+) complex cations (phen is 1,10-phenanthroline) and C(CN)3(-) counter-anions. The Cu(II) atom has an asymmetric tetragonal-bipyramidal (4 + 1+1) stereochemistry with a pseudo-C2 symmetry axis bis-ecting the nitrate ligand and passing through the Cu(II) atom between the two phen ligands. The four N atoms of the phen ligands coordinate to the Cu(II) atom with Cu-N distances in the range 1.974?(2)-2.126?(2)?Å, while the two O atoms coordinate at substanti-ally different distances [2.154?(2) and 2.586?(2)?Å]. The structure is stabilized by C-H?O hydrogen bonds and weak ?-? inter-actions between nearly parallel benzene and pyridine rings of two adjacent phen mol-ecules, with centroid-centroid distances of 3.684?(2) and 3.6111?(2)?Å, and between ?-electrons of the tricyano-methanide anion and the pyridine or benzene rings [N?(ring centroid) distances = 3.553?(3)-3.875?(3)?Å].

SUBMITTER: Lackova K

PROVIDER: S-EPMC3588793 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Tris(5,6-dimethyl-1,10-phenanthroline-?(2) N,N')iron(II) bis-(tricyano-methanide).

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Project description:The structure of the the title compound, [Cu(2)(C(7)H(3)ClO(3))(2)(C(12)H(8)N(2))(2)]·2H(2)O, consists of a dimeric unit involving a planar Cu(2)O(2) group arranged around an inversion center. The coordination sphere of the Cu(II) atom can be described as an elongated distorted square pyramid where the basal plane is formed by the two N atoms of the 1,10-phenanthroline mol-ecule and the two O atoms of the hydroxy-chloro-benzoate (hcbe) anion. The long apical Cu-O distance of 2.569 (2) Å involves the O atom of a symmetry-related hcbe anion, building up the dinuclear unit. Each dinuclear unit is connected through O-H⋯O hydrogen bonds involving two water mol-ecules, resulting in an R(4) (2)(8) graph-set motif and building up an infinite chain parallel to (10). C-H⋯O inter-actions further stabilize the chain.

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