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Poly[tetra-aqua-?(4)-bromido-di-?(2)-bromido-?(2)-hydroxido-di-?(3)-iso-nicotinato-tetra-?(2)-isonicotinato-tetra-copper(I)dithulium(III)].

ABSTRACT: A new thulium(III)-copper(I) heterometallic coordination polymer, [Cu(4)Tm(2)Br(3)(C(6)H(4)NO(2))(6)(OH)(H(2)O)(4)](n), has been prepared by a hydro-thermal method. The Tm and both Cu atoms lie on mirror planes. The Tm atom is seven-coordinate with a capped distorted trigonal-prismatic coordination geometry, while the Cu atoms adopt trigonal CuBrN(2) and tetra-hedral CuBr(3)N coordination modes, respectively. The Cu atom in the trigonal coordination environment is disordered over two sites of equal occupancy. The crystal structure is constructed from two distinct units of dimeric [Tm(2)(?(2)-OH(IN)(6)(H(2)O)(4)] cores (IN = isonicotinate) and one-dimensional inorganic [Cu(4)Br(3)](n) chains, which are linked together, forming heterometallic Cu-halide-lanthanide-organic layers.

SUBMITTER: Wang GM

PROVIDER: S-EPMC2959303 | biostudies-literature | 2008 Sep

REPOSITORIES: biostudies-literature

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Poly[tetra-aqua-μ(4)-bromido-di-μ(2)-bromido-μ(2)-hydroxido-di-μ(3)-iso-nicotinato-tetra-μ(2)-isonicotinato-tetra-copper(I)dithulium(III)].

Wang Guo-Ming GM Li Zeng-Xin ZX Zheng Qing-Hua QH Liu Hui-Luan HL

Acta crystallographica. Section E, Structure reports online 20080913 Pt 10

A new thulium(III)-copper(I) heterometallic coordination polymer, [Cu(4)Tm(2)Br(3)(C(6)H(4)NO(2))(6)(OH)(H(2)O)(4)](n), has been prepared by a hydro-thermal method. The Tm and both Cu atoms lie on mirror planes. The Tm atom is seven-coordinate with a capped distorted trigonal-prismatic coordination geometry, while the Cu atoms adopt trigonal CuBrN(2) and tetra-hedral CuBr(3)N coordination modes, respectively. The Cu atom in the trigonal coordination environment is disordered over two sites of eq ...[more]

PMID: 21201015

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Poly[tetra-aqua-?(3)-benzene-1,2-di-carboxyl-ato-?(3)-bromido-penta-?(2)-bromido-octa-?(3)-isonicotinato-hepta-copper(I)trilanthanum(III)].

Project description:A new lanthanum(III)-copper(I) heterometallic coordination polymer, [Cu(7)La(3)Br(6)(C(6)H(4)NO(2))(8)(C(8)H(4)O(4))(H(2)O)(4)](n), has been prepared by a hydro-thermal method. Of the three La atoms in the asymmetric unit, two are eight-coordinate with bicapped trigonal-prismatic configurations; the third is nine-coordinated and has a tricapped trigonal-prismatic coordination geometry. Of the seven Cu atoms, two are two-coordinate with CuBrN and CuN(2) ligand sets, three have trigonal configurations, viz. CuBrN(2), CuBr(2)N and CuBr(3), while the remaining two adopt distorted tetra-hedral CuBr(3)N geometries. In the crystal structure, adjacent La centers are linked by isonicotinate (IN(-)) and benzene-1,2-dicarboxyl-ate ligands to form a two-dimensional La-carboxyl-ate layer in the ab plane. These layers are further inter-connected with each other by bridging [Cu(IN)(2)] motifs, leading to an unusual three-dimensional heterometallic Cu-halide-lanthanide-organic framework, with the inorganic [Cu(6)Br(6)](n) chains located in the resulting channels. Two Cu atoms are disordered over two positions, both with site occupancy factors of 0.80 and 0.20. O-H?O hydrogen bonding between water molecules and carboxylate O atoms helps to consolidate the crystal packing.

| S-EPMC2977598 | biostudies-literature

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| S-EPMC3274899 | biostudies-other

catena-Poly[{di-μ-isonicotinato-bis[di-aqua-isonicotinatoeuropium(III)]}-μ-isonicotinato-[diisonicotinatocopper(II)]-μ-isonicotinato].

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Tetra-kis(2,2'-bipyrid-yl)dichlorido-di-?(3)-hydroxido-di-?(2)-hydroxido-tetra-copper(II) dinitrate hexa-hydrate.

Project description:The tetra-nuclear copper(II) title complex, [Cu(4)Cl(2)(OH)(4)(C(10)H(8)N(2))(4)](NO(3))(2)·6H(2)O, has a crystallographically imposed centre of symmetry. The metal atoms display a distorted tetragonal-pyramidal coordination geometry, and are linked by two ?(2)- and two ?(3)-hydroxo groups, assuming a chair-like conformation for the Cu(4)O(2) core. In the crystal, the complex mol-ecules are linked into a three-dimensional network by inter-molecular O-H?O, O-H?Cl, C-H?O and C-H?Cl hydrogen bonds and ?-? stacking inter-actions with centroid-centroid separations of 3.724?(2) and 3.767?(3)?Å.

| S-EPMC2968164 | biostudies-literature

A redetermination of the structure and Hirshfeld surface analysis of poly[di-aquadi-μ-hydroxido-tetra-kis-(μ-nicotinato <i>N</i>-oxide)tricopper(II)].

Project description:The product obtained from the reaction of pyridine-2,3-di-carb-oxy-lic acid and hydrated copper(II) chloride in hot aqueous NaOH solution was determined by low temperature X-ray diffraction to be [Cu3(C6H4NO3)4(OH)2(H2O)2] n or [Cu3(μ-OH)2(μ-nicNO)4(H2O)2] n (nicNO is pyridine-3-carboxyl-ate N-oxide), a structure obtained from room temperature data and reported previously. The present determination is improved in quality and treatment of the H atoms. A Hirshfeld surface analysis of the inter-molecular inter-actions is presented.

| S-EPMC8061101 | biostudies-literature

Poly[penta-aqua-tetra-kis(?(2)-nicotinato-?N:O)(perchlorato-?O)lanthanum(III)disilver(I)].

Project description:In the title complex, [Ag(2)La(C(6)H(4)NO(2))(4)(ClO(4))(H(2)O)(5)](n), the La(III) atom, lying on a twofold rotation axis, is eight-coordinated by four O atoms from four nicotinate (nic) ligands and four water mol-ecules in a distorted square-anti-prismatic coordination geometry. The Ag(I) atom is coordinated in an almost linear fashion by two pyridyl N atoms of two nic ligands. The linear coordination is augmented by weak inter-actions with one O atom from a half-occupied ClO(4) (-) anion and a water mol-ecule lying on a twofold axis. Two Ag(nic)(2) units connect two La atoms, forming a cyclic unit. These units are further extended into an infinite zigzag chain. The chains are bridged by the disordered perchlorate ions via weak Ag-O [2.678?(2)?Å] inter-actions. O-H?O hydrogen bonds, weak Ag?Ag [3.3340?(15)?Å] inter-actions and ?-? inter-actions between the pyridyl rings [centroid-centroid distance = 3.656?(2)?Å] lead to a three-dimensional network.

| S-EPMC2977437 | biostudies-literature

Poly[(?(3)-5-bromo-nicotinato)(5-bromo-nicotinato)copper(II)].

Project description:The title coordination polymer, [Cu(C(6)H(3)BrNO(2))(2)](n), is composed of two structurally similar two-dimensional coordination polymers (twin layers). Both of them have the same chemical composition but they display different bond lengths and angles. In each layer, two N atoms and four carboxyl-ate O atoms from the bridging 5-bromo-nicotinate ligands and four carboxyl-ate O atoms from the terminal 5-bromo-nicotinate ligands bind to two Cu(II) atoms to form a dinuclear paddle-wheel-like pattern. Adjacent paddle wheels are further linked by bridging 5-bromo-nicotinate groups to generate a two-dimensional coordination polymer; neighboring twin-like layers are finally stacked through ?-? stacking interactions between adjacent pyridine rings [perpendicular distance of 3.626?(2)?Å] in a 'sandwich' manner, thus generating a three-dimensional supra-molecular structure.

| S-EPMC2970337 | biostudies-literature

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