metal-organic compounds
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The title compound, [Cu2Cl4(C14H14N2)2], is a new polymorph of a previously reported compound [Dehghanpour et al. (2011). Acta Cryst. E67, m1296]. The current polymorph was obtained from an acetonitrile solution of the title compound. Like the first polymorph, it is monoclinic (space group P21/c). The unique CuII ion in the title centrosymmetric dinuclear complex is in a distorted trigonal–bipyramidal coordination environment formed by the bis-chelating N-heterocyclic ligand, two bridging Cl ligands and one terminal Cl ligand. In the crystal, weak C—HCl hydrogen bonds are observed in addition to π–π stacking interactions, with a centroid–centroid distance of 3.6597 (18) Å.
metal-organic compounds
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In the title complex, [ZnI2(C13H12N2O)], the ZnII atom has a distorted tetrahedral coordination. The organic ligand is bidentate, coordinating the ZnII atom via the two N atoms. The benzene and pyridine rings are oriented at a dihedral angle of 11.67 (9)°. In the crystal, weak C—HI and C—HO hydrogen bonds are observed, in addition to π–π stacking interactions, with a centroid–centroid distance of 3.72 (5) Å.
metal-organic compounds
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In the title complex, [ZnBr2(C12H9FN2)], the ZnII atom has a distorted tetrahedral Br2N2 coordination sphere. The organic ligand is bidentate, coordinating the ZnII atom via two imine N atoms. The benzene and pyridine rings are oriented at a dihedral angle of 10.49 (1)°. In the crystal, weak C—HF and C—HBr hydrogen bonds are observed.
metal-organic compounds
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catena-Poly[[dichloridomercury(II)]-μ-{N-[(E)-pyridin-2-ylmethylidene-κN]pyridin-3-amine-κ2N1:N3}]
In the title coordination polymer, [HgCl2(C11H9N3)]n, the HgII ion is coordinated by three N atoms from two N-[(E)-pyridin-2-ylmethylidene]pyridin-3-amine (L) ligands and two chloride anions in a distorted trigonal–bipyramidal geometry. The two pyridine rings in L form a dihedral angle of 50.0 (2)°. L ligands bridge adjacent HgCl2 units into polymeric chains propagating in [010]. The crystal packing is further stabilized by weak intermolecular C—HCl hydrogen bonds and π–π interactions between the pyridine rings, with a centroid–centroid separation of 3.529 (9) Å.
metal-organic compounds
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In the asymmetric unit of the title polymeric complex, {[CuI(C11H9N3)]·0.5CH3CN}n, there are two CuI atoms, two N-[(pyridin-2-yl-κN)methylidene]pyridin-3-amine (PyPy) ligands and two I atoms. Both CuI atoms have a distorted tetrahedral geometry, each being coordinated by one I atom, two N atoms of one PyPy ligand and one N atom from an adjacent PyPy ligand. In the crystal, infinite helical chains of [Cu2(PyPy)2]n are formed propagating along the b axis. These chains are linked via weak C—HI hydrogen bonds and π–π stacking interactions [shortest centroid–centroid distance = 3.2727 (14) Å]. During the refinement, electron-density peaks were located that were believed to be highly disordered solvent molecules (possibly acetonitrile). The SQUEEZE option in PLATON [Spek (2009). Acta Cryst. D65, 148–155] indicated there were solvent cavities with a total volume of 196 Å3 containing approximately 60 electrons per unit cell, which equated to one molecule of acetonitrile per asymmetric unit.