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1,1'-Dimethyl-4,4'-(propane-1,3-di-yl)dipyridinium tetra-bromidocadmate(II).

ABSTRACT: In the cation of the title compound, (C(15)H(20)N(2))[CdBr(4)], the dihedral angle between the two pyridine rings is 70.85?(5)°. An inter-molecular ?-? inter-action between the pyridine rings [centroid-centroid distance = 3.900?(4)?Å] is observed. The Cd(II) atom has a distorted tetra-hedral coordination.

SUBMITTER: Li FF

PROVIDER: S-EPMC2959373 | biostudies-literature | 2008 Sep

REPOSITORIES: biostudies-literature

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1,1'-Dimethyl-4,4'-(propane-1,3-di-yl)dipyridinium tetra-bromidocadmate(II).

Li Fei-Fei FF Li Zhi-Gang ZG Deng Jian-Cheng JC Xu Jing-Wei JW

Acta crystallographica. Section E, Structure reports online 20080924 Pt 10

In the cation of the title compound, (C(15)H(20)N(2))[CdBr(4)], the dihedral angle between the two pyridine rings is 70.85 (5)°. An inter-molecular π-π inter-action between the pyridine rings [centroid-centroid distance = 3.900 (4) Å] is observed. The Cd(II) atom has a distorted tetra-hedral coordination. ...[more]

PMID: 21201053

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4,4'-(Propane-1,3-di-yl)dipyridinium tetra-chloridonickelate(II).

Project description:The title compound, (C(13)H(16)N(2))[NiCl(4)] or (H(2)bpp)·NiCl(4) [bpp is 1,3-bis-(4-pyrid-yl)propane], is isostructural with its already reported Cu, Zn and Hg analogues. The structure consists of a doubly charged (H(2)bpp)(2+) cation and a tetra-hedral [NiCl(4)](2-) dianion. Both pyridyl N atoms are protonated and form a (H(2)bpp)(2+) cation which adopts an anti-anti conformation with a dihedral angle of 6.287?(7)° between the pyridyl rings. The two pyridyl N atoms are both involved in strong N-H?Cl hydrogen bonds, which link both units into a dimer.

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3,3-Dimethyl-1,1-(propane-1,3-di-yl)diimidazol-1-ium tetra-bromido-cadmate(II).

Project description:The title compound, (C(11)H(18)N(4))[CdBr(4)], was prepared by an anion exchange. The dihedral angle between the two planar imidazolium rings in the cation is 74.4?(4)°. The crystal packing is stabilized by weak inter-molecular C-H?Br hydrogen bonds between the cation and the tetrahedral anion, building up a three-dimensionnal network.

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{4,4',6,6'-Tetra-iodo-2,2'-[(2,2-dimethyl-propane-1,3-di-yl)bis-(nitrilo-methanylyl-idene)]diphenolato}nickel(II).

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1,1'-Dimethyl-4,4'-[(2,4-diphenyl-cyclo-butane-1,3-di-yl)dipyridinium-(E)-1-methyl-4-styrylpyridinium-benzene-sulfonate (0.15/1.70/2).

Project description:In the title compound, 1.70C(14)H(14)N(+)·0.15C(28)H(28)N(2) (2+)·2C(6)H(5)O(3)S(-), the monocation exists in the E configuration with respect to the ethenyl C=C double bond and is close to planar, the dihedral angle between the pyridinium and phenyl ring being 5.20?(13)°. The dication lies about an inversion centre. In the crystal, the dication occupies almost the same site occupied by monocations at (x, y, z) and (2?-?x, 1?-?y, 1?-?z). The O atoms of the anion are disordered over two positions with occupancies of 0.75 and 0.25. In the crystal, the cations are stacked in an anti-parallel manner along the a axis, whereas the anions are linked into chains along the same direction by C-H?O hydrogen bonds. In addition, C-H?? and ?-? inter-actions [centroid-centroid distance = 3.593?(9) or 3.6705?(16)?Å] are observed.

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3,3'-Dimethyl-1,1'-(propane-1,3-di-yl)diimidazol-1-ium bis(hexafluoro-phosphate).

Project description:In the title compound, C(11)H(18)N(4) (2+)·2PF(6) (-), the dihedral angle between the two planar imidozlium rings is 6.1?(2)°. Both [PF(6)](-) anions are disordered [occupancies 0.65?(2):0.35?(2) and 0.59?(5):0.41?(5)]. The crystal packing is stabilized by inter-molecular C-H?F hydrogen bonds which link two mol-ecules, forming centrosymmetric dimers.

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2,2'-Dimethyl-1,1'-[2,2-bis-(bromo-methyl)propane-1,3-di-yl]dibenzimidazole hemihydrate.

Project description:The title compound, C(21)H(22)Br(2)N(4)·0.5H(2)O, contains two benzimidazole groups which may provide two potential coordination nodes for the construction of metal-organic frameworks. The mean planes of the two imidazole groups are almost perpendicular, with a dihedral angle of 83.05 (2)°, and adjacent mol-ecules are linked into a one-dimensional chain by π-π stacking inter-actions between imidazole groups of different mol-ecules [centroid-to-centroid distances of 3.834 (2) and 3.522 (2) Å].

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4,4'-(Propane-1,3-di-yl)dipiperidinium sulfate monohydrate.

Project description:In the title compound, C(13)H(28)N(2) (2+)·SO(4) (2-)·H(2)O, extensive hydrogen-bonding inter-actions between the protonated 4,4'-(propane-1,3-di-yl)dipiperidinium ions, the sulfate anions and the water mol-ecules lead to a three-dimensional pillared and layered structure with the 4,4'-(propane-1,3-di-yl)-dipiperidinium ions acting as the pillars.

| S-EPMC2960564 | biostudies-literature

{4,4',6,6'-Tetra-bromo-2,2'-[(2,2-dimethyl-propane-1,3-di-yl)bis-(nitrilo-methanylyl-idene)]diphenolato}copper(II).

Project description:In the title compound, [Cu(C(19)H(16)Br(4)N(2)O(2))], the Cu(II) ion and the substituted C atom of the diamine fragment lie on a crystallographic twofold rotation axis. The geometry around the Cu(II) ion is distorted square-planar, which is defined by the N(2)O(2) donor atoms of the coordinated Schiff base ligand. The dihedral angle between the symmetry-related substituted benzene rings is 25.33?(14)°. The crystal structure is stabilized by an inter-molecular ?-? inter-action [centroid-centroid distance = 3.8891?(18)?Å].

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