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[3,3'-Dihy-droxy-3,3'-bis-(pyridin-3-yl-κN)-1,1'-(pyridine-2,6-di-yl)dipropan-1-one](nitrato-κO,O')silver(I).

ABSTRACT: In the title compound, a new macrocyclic metal complex, [Ag(NO(3))(C(21)H(15)N(3)O(4))], all non-H atoms are in a close-to-planar geometry (except for the nitrate anion), with a maximum out-of-plane deviation of 0.327 (6) Å for a pyridine C atom. The dihedral angle between the least-squares plane through the [3,3'-dihy-droxy-3,3'-bis-(pyridin-3-yl)-1,1'-(pyridine-2,6-di-yl)dipropan-1-one]silver(I) fragment and the nitrate anion is 31.29 (13)°. The mol-ecular structure is stabilized by several inter- and intra-molecular O-H⋯O and C-H⋯O hydrogen bonds. The Ag(I) atom is coordinated by two pyridine N atoms and two O atoms of the nitrate anion in a geometry intermediate between tetrahedral and square-planar.

SUBMITTER: Dong JY

PROVIDER: S-EPMC3152099 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Bis(2,6-dihy-droxy-benzoato-κO,O)(nitrato-κO,O')bis-(1,10-phenanthroline-κN,N')gadolinium(III).

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Project description:In the title complex, [Ni(NO3)2(C14H16N6O2)]·H2O, the Ni(II) atom, lying on a twofold rotation axis, is coordinated by a tetra-dentate 3,3'-{(1E,1'E)-1,1'-[ethane-1,2-diylbis(azan-1-yl-1-yl-idene)]bis-(ethan-1-yl-1-yl-idene)}di-pyrazine 1-oxide ligand and two mutually trans monodentate nitrate anions in a distorted o-cta-hedral geometry. The lattice water mol-ecule is located on a twofold rotation axis. The complex mol-ecules are linked by the water mol-ecules through O-H⋯O hydrogen bonds into a chain along [001]. Further C-H⋯O hydrogen bonds lead to the formation of a three-dimensional network.

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Project description:The title compound, C(13)H(22)N(4)O(2) (2+)·2PF(6) (-), was prepared by the anion exchange of the dibromide ionic liquid with potassium hexa-fluoro-phosphate. The two imidazole rings are each planar (r.m.s. deviations = 0.0016 and 0.0060?Å) and make a dihedral angle of 45.3?(18)°. Intra-molecular O-H?F hydrogen bonds occur. Inter-molecular C-H?F, O-H?O and C-H?O hydrogen bonds stabilize the crystal structure.

| S-EPMC3011425 | biostudies-literature

Crystal structure of aqua-(nitrato-κO)dioxido{2-[3-(pyridin-2-yl-κN)-1H-1,2,4-triazol-5-yl-κN (4)]phenolato-κO}uranium(VI) aceto-nitrile monosolvate monohydrate.

Project description:In the title compound, [U(C13H9N4O)(NO3)O2(H2O)]·CH3CN·H2O, the U(VI) atom is seven-coordinated in a distorted penta-gonal-bipyramidal N2O5 manner by one tridentate triazole ligand, one monodentate nitrate anion and one water mol-ecule in the equatorial plane and by two uran-yl(VI) O atoms in the axial positions. In the crystal, the U(VI) complex mol-ecule is linked to the water and aceto-nitrile solvent mol-ecules through N-H⋯N, O-H⋯O and O-H⋯N hydrogen bonds, forming a sheet structure parallel to the bc plane. The sheets are further linked by an additional O-H⋯O hydrogen bond, forming a three-dimensional network.

| S-EPMC4770975 | biostudies-literature

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Project description:In the title salt, [Zn(C(22)H(24)N(4)O)(CH(3)CN)][Zn(ClO(4))(C(22)H(24)N(4)O)(CH(3)CN)](ClO(4))(3), two differently coordinated zinc cations occur. In the first complex, the metal ion is coordinated by the N,N',N'',O-tetra-dentate acetamide ligand and an acetonitrile N atom, generating an approximate trigonal-bipyramidal coordination geometry, with the O atom in an equatorial site and the acetonitrile N atom in an axial site. In the second complex ion, a perchlorate ion is also bonded to the zinc ion, generating a distorted trans-ZnO(2)N(4) octa-hedron. Of the uncoordinating perchlorate ions, one lies on a crystallographic twofold axis and one lies close to a twofold axis and has a site occupancy of 0.5. N-H⋯O and N-H⋯(O,O) hydrogen bonds are observed in the crystal. Disordered solvent mol-ecules occupy about 11% of the unit-cell volume; their contribution to the scattering was removed with the SQUEEZE routine of the PLATON program [Spek (2009 ▶). Acta Cryst. D65, 148-155.].

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