Abstract
The title compound, [Cu2(C20H14N2O2)2]·2C3H7NO, consists of a centrosymmetric dimer composed of two copper(II) ions and two tetradentate salphen ligands {H2salphen is 2,2′-[o-phenylenebis(nitrilomethylidyne)]diphenol}, and two dimethylformamide solvent molecules. The CuII atom is bonded to two N imino atoms and three phenolate O atoms of salphen. One deprotonated phenol group of each ligand bridges two Cu atoms, forming the dimer. The geometry about the five-coordinate Cu atom can best be described as slightly distorted rectangular pyramidal. The crystal structure is stabilized by π–π interactions [centroid-centroid distance 3.779 (2) Å] and C—H⋯O hydrogen bonds.
Highlights
The title compound, [Cu2(C20H14N2O2)2]Á2C3H7NO, consists of a centrosymmetric dimer composed of two copper(II) ions and two tetradentate salphen ligands {H2salphen is 2,20-[ophenylenebis(nitrilomethylidyne)]diphenol}, and two dimethylformamide solvent molecules
The CuII atom is bonded to two N imino atoms and three phenolate O atoms of salphen
The geometry about the five-coordinate Cu atom can best be described as slightly distorted rectangular pyramidal
Summary
Key indicators: single-crystal X-ray study; T = 294 K; mean (C–C) = 0.005 A; R factor = 0.051; wR factor = 0.129; data-to-parameter ratio = 16.4. The title compound, [Cu2(C20H14N2O2)2]Á2C3H7NO, consists of a centrosymmetric dimer composed of two copper(II) ions and two tetradentate salphen ligands {H2salphen is 2,20-[ophenylenebis(nitrilomethylidyne)]diphenol}, and two dimethylformamide solvent molecules. The CuII atom is bonded to two N imino atoms and three phenolate O atoms of salphen. One deprotonated phenol group of each ligand bridges two Cu atoms, forming the dimer. The geometry about the five-coordinate Cu atom can best be described as slightly distorted rectangular pyramidal. The crystal structure is stabilized by – interactions [centroid-centroid distance 3.779 (2) A ] and C—HÁ Á ÁO hydrogen bonds. Related literature For related literature, see: Suzuki et al (1997)
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