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Poly[[aqua-(?(5)-3,4,5,6-tetra-carb-oxy-cyclo-hexane-1,2-dicarboxyl-ato)strontium] monohydrate].

ABSTRACT: In the title compound, {[Sr(C(12)H(10)O(12))(H(2)O)]·H(2)O}(n), the Sr(II) ion is coordinated by six O atoms of five symmetry-related 3,4,5,6-tetra-carb-oxy-cyclo-hexane-1,2-dicarboxyl-ate ligands and one water mol-ecule in a slightly distorted monocapped trigonal-prismatic environment. The ligands bridge the Sr(II) ions, forming a two-dimensional structure. In the crystal, O-H?O hydrogen bonds further connect the structure into a three-dimensional network. The H atoms of two of the carboxyl groups were refined as half-occupancy.

SUBMITTER: Cheng PC

PROVIDER: S-EPMC3238780 | biostudies-literature |

REPOSITORIES: biostudies-literature

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catena-Poly[diaqua-(cis-cyclo-hexane-1,2-dicarboxyl-ato)cadmium].

Project description:In the title polymer, [Cd(C(8)H(10)O(4))(H(2)O)(2)](n), the Cd(II) cation is coordinated by five carboxyl-ate O atoms from three different cyclo-hexane-1,2-dicarboxyl-ate anions and two O atoms from two water mol-ecules, displaying a distorted CdO(7) pentagonal-bipyramidal geometry. Each anion acts as a ?(3)-bridge, linking symmetry-related Cd(II) ions into a layer parallel to (010). In the crystal, numerous O-H?O and C-H?O hydrogen bonds occur. The coordinated water mol-ecules and carboxyl-ate O atoms act as donors or acceptors in the formation of these hydrogen-bonding inter-actions.

| S-EPMC3247538 | biostudies-literature

catena-Poly[[dimethyl-tin(IV)]-?-cis-cyclo-hexane-1,2-dicarboxyl-ato].

Project description:The title complex, [Sn(CH(3))(2)(C(8)H(10)O(4))](n), was synthesized from cis-cyclo-hexane-1,2-dicarboxylic acid and dimethyl-tin dichloride. The complex has a bridging bis-bidentate carboxyl-ate group resulting in a zig-zag chain structure parallel to [001]. The Sn atom is six-coordinated and displays a distorted octa-hedral geometry.

| S-EPMC2968691 | biostudies-literature

Poly[?(2)-aqua-aqua-?(4)-pyridine-2,4-dicarboxyl-ato-strontium].

Project description:In the title polymeric complex, [Sr(C(7)H(3)NO(4))(H(2)O)(2)](n), the Sr(II) atom is eight-coordinated by four O atoms and one N atom of four pyridine-2,4-dicarboxyl-ate (py-2,4-dc) ligands and three O atoms of three coordinated water mol-ecules in a dodeca-hedral geometry. These units are connected via the carboxyl-ate O atoms and water mol-ecules, building polymeric layers parallel to (100). In the crystal structure, non-covalent inter-actions consisting of O-H?O hydrogen bonds and ?-? stacking inter-actions [centroid-centroid distances = 3.862?(17) and 3.749?(17)?Å] connect the various components, forming a three-dimensional structure.

| S-EPMC2977487 | biostudies-literature

Bis(μ-cyclo-hexane-1,4-dicarboxyl-ato)bis-{aqua-[1-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)naphthalen-2-ol]cadmium} monohydrate.

Project description:The asymmetric unit of the title compound, [Cd(2)(C(8)H(10)O(4))(2)(C(23)H(14)N(4)O)(2)(H(2)O)(2)]·H(2)O, consists of one half of the dimeric complex, which lies about an inversion centre, and a half-occupancy solvent water mol-ecule on a general position. Each Cd(II) cation is six-coordinated by the two N atoms from one 1-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)naphthalen-2-ol (L) ligand and three O atoms from two different 1,4-chdc(2-) ligands (1,4-H(2)chdc = cyclo-hexane-1,4-dicarb-oxy-lic acid), two coordinating in a bidentate fashion and the other in a monodentate fashion. The distorted octa-hedral coordination sphere is completed by a coordinated water mol-ecule. The Cd(II) atoms are each bridged by two 1,4-chdc(2-) ligands, forming an inversion dimer with the L ligands located on the outside of the dimeric unit. An intra-molecular N-H⋯O hydrogen bond occurs. In the crystal, O-H⋯O and N-H⋯O hydrogen-bonding inter-actions stabilize the packing.

| S-EPMC3051929 | biostudies-literature

Poly[di-?-cis-cyclo-hexane-1,4-dicarboxyl-ato-?-trans-cyclo-hexane-1,4-dicarboxyl-ato-bis-[dipyrido[3,2-a:2',3'-c]phenazine]trimanganese(II)].

Project description:In the title compound, [Mn(3)(C(8)H(10)O(4))(3)(C(18)H(10)N(4))(2)], one Mn atom and one cyclohexane-1,4-dicarboxylate (chdc) ligand are located on centres of inversion. One of the two independent Mn atoms is seven-coordinate, binding to five carboxyl-ate O atoms from different chdc ligands and two phenanthrene N atoms from a dipyrido[3,2-a:2',3'-c]phenazine (L) ligand, while the second Mn atom is six-coordinate, binding to six carboxyl-ate O atoms from different chdc ligands. The cis-chdc ligands bridge the trinuclear Mn(II) clusters, forming chains, which are further linked into a three-dimensional network.

| S-EPMC2961629 | biostudies-literature

Poly[[?(2)-1,2-bis-(imidazol-1-ylmeth-yl)benzene](?(2)-cyclo-hexane-1,4-dicarboxyl-ato)cobalt(II)].

Project description:In the the title compound, [Co(C(8)H(10)O(4))(C(14)H(14)N(4))](n), the Co(II) atom is four-coordinated by two N atoms from two different 1,2-bis-(imidazol-1-ylmeth-yl)benzene ligands and two carboxyl-ate O atoms from two different cyclo-hexane-1,4-dicarboxyl-ate anions in a tetra-hedral coordination geometry. The resulting structure is a two-dimensional polymer with layers in the (100) plane.

| S-EPMC2983598 | biostudies-literature

Aqua-(pyridine-3-carb-oxy-lic acid-?N)(pyridine-2,6-dicarboxyl-ato-?O,N,O)copper(II) monohydrate.

Project description:In the title Cu(II) complex, [Cu(C(7)H(3)NO(4))(C(6)H(5)NO(2))(H(2)O)]·H(2)O, the environment of the Cu(2+) ion is a distorted square pyramid with the axial site occupied by the O atom from the coordinated water mol-ecule and the square base formed by two O and two N atoms from the tridentate anion and the neutral monodentate pyridine-3-carboxylic acid ligand. O-H?O hydrogen bonds, as well as ?-? inter-actions [centroid-centroid distance = 3.945?(3)?Å] contribute to the stabilization of this structure.

| S-EPMC3120614 | biostudies-literature

Poly[tetra-aqua-μ(3)-pyridine-3,5-dicarboxyl-ato-strontium(II)].

Project description:The reaction of strontium(II) nitrate with the proton-transfer compound (pdaH(2))(py-3,5-dc)·H(2)O (where pda = propane-1,3-diamine and py-3,5-dcH(2) = pyridine-3,5-dicarboxylic acid) leads to the formation of the title polymeric compound, [Sr(C(7)H(3)NO(4))(H(2)O)(4)](n). The propane-1,3-diaminium cation is not incorporated in this crystal structure. The Sr(II) atom lies on an inversion centre and is eight-coordinated by four O atoms from three py-3,5-dc ligands and four O atoms from four coordinated water mol-ecules. The coordination polyhedron of the Sr(II) atom is a distorted dodeca-hedron. These binuclear units are connected via the carboxyl-ate O atoms to build a one-dimensional polymeric chain. In the crystal structure, non-covalant inter-actions consisting of hydrogen bonds (X-H⋯O, with X = O and C) and π-π stacking inter-actions [3.4604 (19) Å] connect the various components to form a supra-molecular structure.

| S-EPMC2960463 | biostudies-literature

Bis(?-cyclo-hexane-1,3-dicarboxyl-ato)-?O:O,O;?O,O:O-bis-[aqua-(1,10-phenanthroline-?N,N')zinc(II)].

Project description:The cyclo-hexane-1,3-dicarboxyl-ate dianion in the dinuclear centrosymmetric title compound, [Zn(2)(C(8)H(10)O(4))(2)(C(12)H(8)N(2))(2)(H(2)O)(2)], has a chair conformation with both carboxyl-ate groups in equatorial positions. One carboxyl-ate group chelates a Zn(II) atom, whereas the other binds through one O atom only to confer a six-coordinate status to the N-heterocycle-chelated water-coordinated Zn(II) atom. Adjacent dinuclear mol-ecules are linked by O-H?O hydrogen bonds into a linear chain.

| S-EPMC2970336 | biostudies-literature

Poly[aqua-bis(?-benzene-1,2-dicarboxyl-ato)ethano-ltetra-lithium].

Project description:In the crystal structure of the title compound [Li(4)(C(8)H(4)O(4))(2)(C(2)H(5)OH)(H(2)O)](n), there are four crystallographically independent metal centers each of which is coordinated by four O atoms. The benzene-1,2-dicarboxyl-ate groups act as bidentate-bridging ligands producing a two-dimensional coordination network parallel to the ab plane. The coordination polymer is further stabilized by coordination of water and ethanol mol-ecules by the Li(+) ions. Simultaneously, the water and ethanol mol-ecules are involved in O-H?O and C-H?? inter-actions.

| S-EPMC2968522 | biostudies-literature

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