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Catena-Poly[[[penta-aqua-cerium(III)]-?-pyridine-2,4,6-tricarboxyl-ato-?(4)N,O(2),O(6):O(6')] tetra-hydrate].

ABSTRACT: The Ce(III) atom in the title compound, {[Ce(C(8)H(2)NO(6))(H(2)O)(5)]·4H(2)O}(n), is N,O,O'-chelated by the carboxyl-ate trianion and is coordinated by five water mol-ecules; a carboxyl O atom from an adjacent trianion bridges the Ce(III) atom, resulting in a chain running along the a axis. The nine atoms surrounding the metal atom comprise a tricapped trigonal-prismatic polyhedron. The coordinated and lattice water mol-ecules inter-act with each other and with the carboxyl O atoms by O-H?O hydrogen bonds, generating a three-dimensional network.

SUBMITTER: Sharif S

PROVIDER: S-EPMC3344357 | biostudies-other | 2012 May

REPOSITORIES: biostudies-other

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catena-Poly[[[penta-aqua-cerium(III)]-μ-pyridine-2,4,6-tricarboxyl-ato-κ(4)N,O(2),O(6):O(6')] tetra-hydrate].

Sharif Shahzad S Khan Islam Ullah IU Zaheer Samia S Ng Seik Weng SW

Acta crystallographica. Section E, Structure reports online 20120418 Pt 5

The Ce(III) atom in the title compound, {[Ce(C(8)H(2)NO(6))(H(2)O)(5)]·4H(2)O}(n), is N,O,O'-chelated by the carboxyl-ate trianion and is coordinated by five water mol-ecules; a carboxyl O atom from an adjacent trianion bridges the Ce(III) atom, resulting in a chain running along the a axis. The nine atoms surrounding the metal atom comprise a tricapped trigonal-prismatic polyhedron. The coordinated and lattice water mol-ecules inter-act with each other and with the carboxyl O atoms by O-H⋯O hyd ...[more]

PMID: 22590123

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Penta-aqua-(5-carb-oxy-pyridine-2-carboxyl-ato-?N,O)(pyridine-2,5-dicarboxyl-ato-?N,O)cerium(III) tetra-hydrate.

Project description:In the title compound, [Ce(C(7)H(3)NO(4))(C(7)H(4)NO(4))(H(2)O)(5)]·4H(2)O, the Ce(3+) ion is nine-coordinated by two O atoms and two N atoms from one single and from one double deprotonated pyridine-2,5-dicarboxyl-ate ligand and five water mol-ecules in a distorted monocapped square-anti-prismatic geometry. In the crystal, extensive O-H?O hydrogen-bonding inter-actions result in a three-dimensional supra-molecular architecture.

| S-EPMC3254311 | biostudies-literature

catena-Poly[[octa-aqua-bis-(?(4)-benzene-1,3,5-tricarboxyl-ato)trizinc] tetra-hydrate].

Project description:In the title compound, {[Zn(3)(C(9)H(3)O(6))(2)(H(2)O)(8)]·4H(2)O}(n), there are two crystallographically independent Zn(II) ions. One presents a trigonal-bipyramidal coordination geometry defined by five O atoms [three from two carboxyl-ate groups of two benzene-1,3,5-tricarboxyl-ate (BTC) ligands and the other two deriving from three water mol-ecules], while the other lies on an inversion centre and exists in a slightly distorted octa-hedral coordination geometry defined by six O atoms (two from two carboxyl-ate groups of two BTC ligands and the others from four water mol-ecules). A three-dimensional framework is further strengthened via O-H?O hydrogen-bonding inter-actons.

| S-EPMC3089220 | biostudies-literature

Poly[[penta-aqua-(?(4)-pyridine-2,4,6-tri-carboxyl-ato)(?(3)-pyridine-2,4,6-tri-carboxyl-ato)diterbium(III)] mono-hydrate].

Project description:The three-dimensional title coordination polymer, {[Tb(2)(C(8)H(2)NO(6))(2)(H(2)O)(5)]·H(2)O}(n), was hydro-thermally synthesized by reacting the corresponding rare-earth salt with pyridine-2,4,6-tricarb-oxy-lic acid (H(3)ptc). There are two independent Tb(III) atoms in the structure, one of which is nine-coordinated, forming a monocapped NO(8) square-anti-prism and the other is eight-coordinated exhibiting a 4,4-bicapped NO(7) trigonal-prismatic environment. The complex units are inter-connected through the ptc(3-) anions acting in different coordination modes, resulting in a three-dimensional coordin-ation polymer. The crystal structure features extensive O-H?O hydrogen bonds.

| S-EPMC3414173 | biostudies-literature

Poly[[penta-aqua-(?(4)-pyridine-2,4,6-tri-carboxyl-ato)(?(3)-pyridine-2,4,6-tri-carboxyl-ato)disamarium(III)] mono-hydrate].

Project description:The asymmetric unit of the title compound, {[Sm(2)(C(8)H(2)NO(6))(2)(H(2)O)(5)]·H(2)O}(n), contains two independent Sm(III) ions, two pyridine-2,4,6-tricarboxyl-ate (ptc) ligands, five aqua ligands and one lattice water mol-ecule. One Sm(III) ion is nine-coordinated by one N and five O atoms from the three ptc ligands and three aqua ligands in a distorted monocapped square antiprismatic geometry, and the other is eight-coordinated by one N and five O atoms from three ptc ligands and two aqua ligands in a 4,4'-bicapped trigonal anti-prismatic geometry. The ptc ligands brigde the Sm(III) ions into a three-dimensional polymeric framework. Extensive O-H?O hydrogen bonding is observed in the crystal structure.

| S-EPMC3297243 | biostudies-literature

catena-Poly[[[aqua-(5-nitro-benzene-1,2,3-tricarboxyl-ato-?O)nickel(II)]-di-?-aqua-[diaqua-sodium]-di-?-aqua] tetra-hydrate].

Project description:In the title complex, {[NaNi(C(9)H(2)NO(8))(H(2)O)(7)]·4H(2)O}(n), the Ni(II) atom has a distorted octa-hedral coordination, defined by five O atoms from five water mol-ecules and one O atom from one 5-nitro-benzene-1,2,3-tricarboxyl-ate ligand. The Na cation is coordinated by six water O atoms in an irregular trigonal-prismatic geometry. There are seven coordinated water mol-ecules in the asymmetic unit. The Ni and Na atoms are linked by water bridges, forming infinite chains, which are connected by strong O-H?O hydrogen bonds involving the coordinated and uncoordinated water mol-ecules into a three-dimensional network.

| S-EPMC2983560 | biostudies-literature

catena-Poly[[[diaqua-iron(II)]-μ-pyridine-2,5-dicarboxyl-ato-[tetra-aqua-iron(II)]-μ-pyridine-2,5-dicarboxyl-ato] tetra-hydrate].

Project description:In the crystal structure of the title compound, {[Fe(2)(C(7)H(3)NO(4))(2)(H(2)O)(6)]·4H(2)O}(n), there are two types of coordination for the Fe(II) atoms. One Fe(II) atom is in a distorted octa-hedral N(2)O(4) environment, with two chelating rings from the pyridine-dicarboxyl-ate ligands and two O atoms from the water mol-ecules, while the other is in a distorted octa-hedral O(6) environment with two O atoms from the pyridine-dicarboxyl-ate ligands and four O atoms from the water mol-ecules. Both Fe(II) atoms lie on crystallographic centers of symmetry. The complex possesses an infinite chain structure running along the [101] direction. These chains are inter-connected by the uncoordinated water mol-ecules through O-H⋯O hydrogen bonds.

| S-EPMC2960407 | biostudies-literature

catena-Poly[[diaqua-manganese(II)]-?-pyridine-2,4,6-tricarboxyl-ato-?N,O,O:O,O].

Project description:In the title compound, [Mn(C(8)H(2)NO(6))(H(2)O)(2)](n), each pyridine-2,4,6-tricarboxyl-ate (tpc) ligand bridges two Mn(II) ions with the formation of polymeric chains located on a twofold rotation axis. Each Mn(II) ion is coordinated by two O and one N atoms from one tpc ligand, two O atoms from another ligand and two water mol-ecules in a distorted penta-gonal-bipyramidal geometry. The Mn-N [2.243?(2)?Å] and Mn-O [2.206?(2)-2.3123?(16)?Å] bond lengths are normal. The coordinated water mol-ecules link neighbouring polymeric chains via O-H?O hydrogen bonds into a two-dimensional framework parallel to the bc plane.

| S-EPMC2919291 | biostudies-literature

catena-Poly[[[?-aqua-penta-aqua-dizinc(II)]-?(4)-benzene-1,2,4,5-tetra-carboxyl-ato] dihydrate].

Project description:The asymmetric unit of the title compound, {[Zn(2)(C(10)H(2)O(8))(H(2)O)(6)]·2H(2)O}(n), contains two distinct Zn atoms joined by a bridging water molecule and two bridging carboxyl-ate groups belonging to distinct halves of benzene-1,2,4,5-tetra-carboxyl-ate (tbec) tetra-anionic ligands, both lying on crystallographic inversion centres. The structure of this new isopolymorphic one-dimensional coordination polymer features asymmetric bimetallic octa-hedral knots. O-H?O hydrogen bonds between water molecules and carboxylate O atoms help to consolidate the crystal packing.

| S-EPMC2977204 | biostudies-literature

Poly[?(3)-hydroxido-?-(pyridine-2,4,6-tricarboxyl-ato)-dilead(II)].

Project description:The asymmetric unit of the title coordination polymer, [Pb(2)(C(8)H(2)NO(6))(OH)](n), contains two crystallographically independent Pb(II) ions, one pyridine-2,4,6-tricarboxyl-ate (ptc) trianion and one hydroxide anion. One of the Pb(II) atoms is coordinated by one pyridine N and four carboxyl-ate O atoms from the ptc trianion and a hydroxide O atom in a distorted octa-hedral geometry. The other Pb(II) atom is five-coordinated by three carboxyl-ate O atoms and two hydroxide O atoms in a distorted tetra-gonal-pyramidal geometry. Four neighbouring Pb(II) atoms are bridged through two ?(3)-hydroxide ligands, forming the centrosymmetric Pb(4)(OH)(2) core. The three-dimensional structure is further achieved through bridging carboxyl-ate groups. There are also O-H?O hydrogen bonds between the hydroxide ligand and the carboxyl-ate group.

| S-EPMC3050173 | biostudies-literature

catena-Poly[[[aqua-(5-nitro-benzene-1,2,3-tricarboxyl-ato-?O)copper(II)]-di-?-aqua-[diaqua-sodium]-di-?-aqua] tetra-hydrate].

Project description:In the heteronuclear coordination polymer, {[CuNa(C(9)H(2)NO(8))(H(2)O)(7)]·4H(2)O}(n), the Cu(II) atom is coordinated by six O atoms from five water mol-ecules and one 5-nitro-benzene-1,2,3-tricarboxyl-ate ligand in a slightly distorted octa-hedral geometry. The Na(+) cation is surrounded by six water mol-ecules in an irregular trigonal-prismatic geometry. The Cu and Na atoms are connected by water bridges, forming an infinite chain. O-H?O hydrogen bonds involving the coordinated and uncoordinated water mol-ecules connect the chains into a three-dimensional network.

| S-EPMC2979819 | biostudies-other

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