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Poly[[μ(10)-2,3-bis(carboxymethyl)butanedioato]disodium].

ABSTRACT: The asymmetric unit of the title compound, [Na(2)(C(8)H(8)O(8))](n), contains one Na(+) ion and half of a 2,3-bis(carboxymethyl)butanedioate (H(2)BTC(2-)) dianion, which lies on a center of symmetry. The dianion exhibits a μ(10)-bridging mode. Each Na atom lies in a NaO(6) octa-hedron defined by six O atoms from five dianions. Adjacent NaO(6) octa-hedra share a common O-O edge, generating a biocta-hedron; adjacent biocta-hedra are O-O edge-connected to one another, building up a chain along [001]. The chains are connected by adjacent H(2)BTC(2-) anions into a three-dimensional framework. The structure is further stabilized by O-H⋯O hydrogen bonds.

SUBMITTER: Wu J

PROVIDER: S-EPMC3008981 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Poly[disodium [diaqua-tri-μ(2)-oxalato-dimagnesium(II)]].

Project description:The title compound, {Na(2)[Mg(2)(C(2)O(4))(3)(H(2)O)(2)]}(n), is isotypic with its Co analogue. There are two crystallographically independent oxalate groups in the asymmetric unit, one lying on an inversion center and the other on a general position. Mg(2+) ions are ligated by H(2)O mol-ecules and bridged by tri- and tetra-dentate oxalate ligands, forming ladder-like double chains that are held together via O-H⋯O hydrogen bonds, with Na(+) cations located between the chains to balance the charge.

| S-EPMC2961912 | biostudies-literature

Poly[potassium-μ-2-[2-(carboxymethyl)phenyl]acetato].

Project description:In the title salt, [K(C(10)H(9)O(4))](n), the K(+) ions are coordinated by six O atoms from three different anions, and there is a cation-π inter-action at ca 3.14 Å. The 2-[2-(carboxymethyl)phenyl]acetate anions are stabilized by intramolecular O-H⋯O hydrogen bonds, and the K(+) cations are linked into one-dimensional coordination polymers running along the b axis; these are further inter-connected by weak C-H⋯O hydrogen bonds.

| S-EPMC2960034 | biostudies-literature

Poly[propane-1,3-diammonium [cuprate(II)-bis-(μ(2)-pyridine-2,3-dicarboxyl-ato)] trihydrate].

Project description:The title polymeric compound {(C(3)H(12)N(2))[Cu(C(7)H(3)NO(4))(2)]·3H(2)O}(n) or {(pnH(2))[Cu(py-2,3-dc)(2)]·3H(2)O}(n) (pn is propane-1,3-diamine and py-2,3-dcH(2) is pyridine-2,3-dicarboxylic acid), was synthesized by reaction of copper(II) chloride dihydrate with a proton-transfer compound, propane-1,3-diammonium pyridine-2,3-dicarboxyl-ate or (pnH(2))(py-2,3-dc), in aqueous solution. The anion is a six-coordinate complex (site symmetry ), with a distorted octa-hedral geometry around Cu(II), consisting of two bidentate pyridine-2,3-dicarboxyl-ate groups and two O atoms of bridging ligands from (py-2,3-dc)(2-) fragments, which are located in trans positions. The (pnH(2))(2+) cation is disordered over two sites by the center of inversion. Inter-molecular hydrogen bonds, π-π [centroid-centroid distances of 3.539 (3) Å] and C-O⋯π stacking inter-actions [O⋯Cg = 3.240 (5) Å; Cg is the center of the pyridine ring], connect the various components into a supra-molecular structure.

| S-EPMC2960456 | biostudies-literature

Bis(triethyl-ammonium) bis-(μ-pyrazine-2,3-dithiol-ato)bis-(pyrazine-2,3-dithio-lato)diferrate(III) methanol disolvate.

Project description:In the title compound, (C(6)H(16)N)(2)[Fe(2)(C(4)H(2)N(2)S(2))(4)]·2CH(4)O, the [Fe(III)(pdt)(2)](-) anion (pdt is pyrazine-2,3-dithiol-ate) forms a centrosymmetric dimer supported by two Fe(III)-S bonds [Fe-S = 2.4787 (4) Å]. In the crystal structure, dimers form a one-dimensional stack along the b axis via π-π stacking inter-actions, the inter-planar separation between adjacent dimers being 3.51 (2) Å. The methanol solvent mol-ecule is involved in two hydrogen bonds in which the hydroxyl group acts as a hydrogen-bond donor to the N atom of a pdt ligand and the O atom acts as an acceptor for the NH group of the triethyl-ammonium cation.

| S-EPMC2967914 | biostudies-literature

Poly[(μ(4)-pyridine-2,3-dicarboxyl-ato)lead(II)].

Project description:In the title coordination polymer, [Pb(C(7)H(3)NO(4))](n), the Pb(II) ion is eight-coordinated in a distorted square-anti-prismatic geometry formed by one pyridine N atom and seven carboxyl-ate O atoms from four pyridine-2,3-dicarboxyl-ate (pda) anions. In the pda anion, the dihedral angles between the pyridine ring and carboxyl-ate groups are 19.5 (6) and 73.3 (6)°. The carboxyl-ate groups of the pda anions bridge the Pb ions, forming a two-dimensional coordination polymer parallel to (100). Weak inter-molecular C-H⋯O hydrogen boning is present in the crystal structure.

| S-EPMC3051456 | biostudies-literature

Bis[μ-2,3-bis-(imidazol-1-ylmeth-yl)quinoxaline]disilver(I) bis-(tetra-fluoridoborate).

Project description:The title compound, [Ag(2)(C(16)H(14)N(6))(2)](BF(4))(2), forms a centrosymmetric 22-membered metallamacrocycle via two Ag(I) ions bridging two 2,3-bis-(imidazol-1-ylmeth-yl)quinoxaline ligands. The Ag(I) ions are coordinated by two N donors of the imidazole groups, forming an approximately linear coordination geometry.

| S-EPMC2915115 | biostudies-literature

Poly[bis-(cyanato-κN)bis-(μ-pyrazine-κN:N')cobalt(II)].

Project description:In the crystal structure of the title compound, [Co(NCO)(2)(C(4)H(4)N(2))(2)](n), the Co(II) cation is coordinated by four N-bonded pyrazine ligands and two N-bonded cyanate anions in a slightly distorted octa-hedral geometry. The crystal structure consists of μ-N:N' pyrazine-bridged cobalt cyanate chains; these are further linked by additional μ-N:N'-bridging pyrazine ligands into layers, which are stacked perpendicular to the crystallographic a axis. The C and O atoms in both crystallographic independent cyanate anions are disordered in two orientations and were refined using a split model with site occupation factor ratios of 0.75/0.25 and 0.7/0.3.

| S-EPMC2968858 | biostudies-literature

Poly[(aqua-calcium)-μ(4)-pyrazine-2,3-di-carboxyl-ato].

Project description:The polymeric title compound, [Ca(C(6)H(2)N(2)O(4))(H(2)O)](n), was synthesized from pyrazine-2,3-dicarb-oxy-lic acid and calcium dichloride under hydro-thermal conditions. The Ca(2+) cation is seven-coordinated by five O atoms and one N atom of four pyrazine-2,3-dicarboxyl-ate anions, and one water mol-ecule. The complete deprotonated pyrazine-2,3-dicarboxyl-ate anion adopts a μ(4)-coordination mode, resulting in the formation of a three-dimensional structure.

| S-EPMC3238750 | biostudies-literature

catena-Poly[[bis-(μ-3-carboxy-benzoato)bis-(1,10-phenanthroline)tricopper(II)]-di-μ(3)-isophthalato].

Project description:The title copper coordination polymer, [Cu(3)(C(8)H(4)O(4))(2)(C(8)H(5)O(4))(2)(C(10)H(8)N(2))(2)](n), was synthesized by reacting Cu(NO(3))(2), isophthalic acid and 1,10-phenanthroline under hydro-thermal conditions. The trinuclear unit presents a central almost planar CuO(4) chromophore with the cation on a symmetry center, and two symmetry-related CuN(2)O(3) groups with the metal centre in a distorted square-pyramidal environment. These units are bridged by isophthalate ligands into one-dimensional double-chain coordination polymers which are, in turn, connected by various π-π stacking inter-actions (face-to-face distance ca 3.45 Å) and O-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular network.

| S-EPMC2959876 | biostudies-literature

Poly[[μ-1,3-bis-(pyridin-3-yl)urea]bis-(μ<sub>4</sub>-glutarato)dicopper(II)].

Project description:The title compound, [Cu2(C5H6O4)2(C11H10N4O)]n, contains square-pyramidally coordinated CuII ions linked by anti-gauche conformation glutarate (glu) ligands into [Cu2(glu)2]n di-periodic coordination polymer layers with embedded [Cu2(OCO)4] paddlewheel clusters. In turn, the layer motifs are connected by 1,3-di(pyridin-3-yl)urea (3-dpu) linkers to form a [Cu2(glu)2(3-dpu)]n tri-periodic coordination polymer network. Treating the [Cu2(OCO)4] clusters as 6-connected nodes reveals an underlying 41263 pcu topology according to TOPOSPRO software [Blatov et al. (2014 ▸). Cryst. Growth Des. 14, 3576-3586].

| S-EPMC10561227 | biostudies-literature

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