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Poly[[triaqua-[?(4)-N-(4-carboxyl-ato-phenyl)-iminodiacetato]sodium(I)zinc(II)] dihydrate].

ABSTRACT: In the title coordination polymer, {[NaZn(C(11)H(8)NO(6))(H(2)O)(3)]·2H(2)O}(n), the Zn atom is coordinated in a distorted tetra-hedral environment by three carboxyl-ate O atoms from two (4-carboxyl-atophenyl-imino)diacetate ligands and one water mol-ecule; the Na atom is in an distorted octa-hedral coordination environment formed by four carboxyl-ate O atoms from three (4-carboxyl-atophenyl-imino)diacetate ligands and two water mol-ecules. The Zn atoms and Na atoms are linked by (4-carboxyl-atophenyl-imino)diacetate ligands into a three-dimensional framework; the uncoordinated water mol-ecules fill the voids of the skeleton and stabilize it by O-H?O hydrogen bonds.

SUBMITTER: Ma DS

PROVIDER: S-EPMC2959866 | BioStudies | 2008-01-01T00:00:00Z

REPOSITORIES: biostudies

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catena-Poly[[diaquazinc(II)]-?-trans-4,4'-diazenediyldibenzoato-?O,O':O'',O'''].

Project description:The title compound, [Zn(C(14)H(8)N(2)O(4))(H(2)O)(2)](n), consists of zigzag chains of Zn atoms bridged by azobenzene-4,4'-dicarboxyl-ate ligands. The Zn(II) atom, lying on a twofold rotation axis, is coordinated by four O atoms from the carboxyl-ate groups and two water mol-ecules, giving rise to a considerably distorted octa-hedral coordination envionment. The ligand lies on an inversion center. In the crystal structure, ?-? inter-actions between the ligands [inter-planar distance = 3.527?(3)?Å] assemble the chains into a sheet-like structure. O-H?O hydrogen bonds between the coordinated water mol-ecules and carboxyl-ate O atoms connect the sheets into a three-dimensional network.

1000-01-01 | S-EPMC2977570 | BioStudies

Poly[diaqua-(?-4,4'-bipyridine-?N:N')[?-2,2'-(p-phenyl-enedi-oxy)diacetato-?O:O']cadmium].

Project description:In the title compound, [Cd(C(10)H(8)O(6))(C(10)H(8)N(2))(H(2)O)(2)](n), the Cd(II) ion has inversion symmetry and is coordinated by O atoms from two water mol-ecules and two bridging 2,2'-(?-p-phenyl-enedi-oxy)diacetate ligands and two N atoms from two 4,4'-bipyridine ligands, giving a slightly distorted octa-hedral geometry. The diacetate and 4,4'-bipyridine ligands also lie across inversion centers. The bridging ligands form layers parallel to (11[Formula: see text]), with adjacent layers inter-connected via O-H?O hydrogen bonds between the coordinated water mol-ecules and the carboxyl-ate O atoms, giving a three-dimensional supra-molecular architecture.

1000-01-01 | S-EPMC3200682 | BioStudies

catena-Poly[[diaqua-(2,2'-bipyridine-?N,N')zinc]-?-2,2'-[1,4-phenylene-bis(sulfanedi-yl)]diacetato-?O:O'].

Project description:In the polymeric title complex, [Zn(C(10)H(8)O(4)S(2))(C(10)H(8)N(2))(H(2)O)(2)](n), the Zn(2+) ion lies on a twofold rotation axis and exhibits an octa-hedral environment, in which it is coordinated by two trans O atoms from two symmetry-related 2,2'-[1,4-phenyl-enebis(sulfanedi-yl)]diacetate anions, two N atoms from one 2,2'-bipyridine ligand, and two cis O atoms from water mol-ecules. The dihedral angle between the two pyridine rings is 11.5?(1)°. Adjacent Zn(2+) ions are bridged in a monodentate manner by the diacetate anions, forming a chain structure extending parallel to [101], and are further linked into the final three-dimensional structure by O-H?O hydrogen bonds between the coordinating water mol-ecules as donor and the non-coordinating carboxyl-ate O atoms as acceptor atoms.

1000-01-01 | S-EPMC3274851 | BioStudies

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.

1000-01-01 | S-EPMC3089220 | BioStudies

Tetra-aqua-bis-[2-(pyridin-4-yl-?N)pyrimidine-5-carboxyl-ato]zinc.

Project description:In the title complex, [Zn(C(10)H(6)N(3)O(2))(2)(H(2)O)(4)], the Zn(II) ion lies on an inversion center and is coordinated in a slightly distorted octa-hedral geometry by two N atoms from two 2-(pyridin-4-yl)pyrimidine-5-carboxyl-ate ligands and four water mol-ecules. In the symmetry-unique part of the mol-ecule, the pyridine and pyrimidine rings form a dihedral angle of 7.0?(1)°. In the crystal, the coordinating water mol-ecules act as donor groups and carboxyl-ate O atoms act as acceptors in O-H?O hydrogen bonds, forming a three-dimensional network.

1000-01-01 | S-EPMC3515163 | BioStudies

trans-Diaqua-bis(6-methoxycarbonyl-pyridazine-3-carboxyl-ato-?N,O)zinc(II) dihydrate.

Project description:In the title centrosymmetric complex, [Zn(C(7)H(5)N(2)O(4))(2)(H(2)O)(2)]·2H(2)O, the Zn(II) ion is coordinated in a trans mode by two symmetry-related bis-chelating 6-methoxycarbonyl-pyridazine-3-carboxyl-ate ligands via N and O atoms, and by two aqua ligand O atoms in axial positions, in a slightly distorted octa-hedral environment. In the crystal structure, complex mol-ecules are linked by inter-molecular O-H?O hydrogen bonds between coordinated and solvent water mol-ecules and carboxyl-ate O atoms, forming mol-ecular ribbons propagating along the a axis.

1000-01-01 | S-EPMC2969658 | BioStudies

Diaquabis-[3-(hydroxy-imino-)butanoato]nickel(II): a triclinic polymorph.

Project description:The title centrosymmetric mononuclear complex, [Ni(C(4)H(6)NO(3))(2)(H(2)O)(2)], is a polymorph of the previously reported complex [Dudarenko et al. (2010 ?). Acta Cryst. E66, m277-m278]. The Ni(II) atom, lying on an inversion center, is six-coordinated by two carboxyl-ate O atoms and two oxime N atoms from two trans-disposed chelating 3-hydroxy-imino-butanoate ligands and two axial water mol-ecules in a distorted octa-hedral geometry. The hydr-oxy group forms an intra-molecular hydrogen bond with the coordinated carboxyl-ate O atom. The complex mol-ecules are linked in stacks along [010] by a hydrogen bond between the water O atom and the carboxyl-ate O atom of a neighboring mol-ecule. The stacks are further linked by O-H?O hydrogen bonds into a layer parallel to (001).

2010-01-01 | S-EPMC2983669 | BioStudies

catena-Poly[[[aqua-bis-(4,4'-bipyridine-?N)zinc]-?-l-tyrosinato-?N,O:O] nitrate dihydrate].

Project description:In the title compound, {[Zn(C(9)H(10)NO(3))(C(10)H(8)N(2))(2)(H(2)O)]NO(3)·2H(2)O}(n), the Zn(II) atom is six-coordinated in a distorted octa-hedral geometry by two carboxyl-ate O atoms and one amino N atom from two l-tyrosinate ligands, two N atoms from two 4,4'-bipyridine ligands, and one water mol-ecule. Adjacent Zn atoms are bridged by the bidentate carboxyl-ate groups into a cationic chain extending along [010]. N-H?N, O-H?N and O-H?O hydrogen bonds link the cationic chains, nitrate anions and uncoordinated water mol-ecules into a supra-molecular network. ?-? inter-actions between the pyridine rings and between the pyridine and benzene rings [centroid-centroid distances = 3.615?(4) and 3.636?(4)?Å] are present.

1000-01-01 | S-EPMC3152081 | BioStudies

Poly[diaqua-(?(4)-benzene-1,2,4,5-tetra-carboxyl-ato)[?(2)-1,4-bis-(3-pyridyl-meth-yl)piperazine]dizinc(II)].

Project description:In the title compound, [Zn(2)(C(10)H(2)O(8))(C(16)H(20)N(4))(H(2)O)(2)](n), the Zn(II) atom is in a distorted tetra-hedral environment, being coordinated by one N atom from a 1,4-bis-(3-pyridyl-meth-yl)piperazine (3-bpmp) ligand, two O atoms from two carboxyl-ate groups of the pyromellitate anion and one water mol-ecule. The distortion of the tetrahedral coordination may be ascribed to the hydrogen bonds between the carboxyl-ate groups and the adjacent water mol-ecules. Each Zn(II) atom links to three organic ligands and each pyromellitate ligand coordinates to four Zn(II) atoms, forming a (3,4)-connected infinite three-dimensional framework. O-H?N inter-actions also occur.

1000-01-01 | S-EPMC3120526 | BioStudies

Poly[[diaqua-(?(4)-l-tartrato)(?(2)-l-tartrato)dizinc(II)] tetra-hydrate].

Project description:In the title compound, {[Zn(C(4)H(4)O(6))(H(2)O)]·2H(2)O}(n), the l-tartrate ligands adopt ?(4)- and ?(2)-coordination modes. The Zn(II) atom adopts an octa-hedral geometry and is chelated by two kinds of l-tartrate ligands through the hydr-oxy and carboxyl-ate groups and coordinated by one unchelating carboxyl-ate O atom and one water mol-ecule. In the crystal, the l-tartrate ligands link the Zn(II) atoms, forming a two-dimensional coordination layer; these layers are futher linked into a three-dimensional supra-molecular network by O-H?O hydrogen bonds between the two-dimensional coordin-ation layers and the uncoordinated water mol-ecules. The latter are equally disordered over two positions.

1000-01-01 | S-EPMC2983975 | BioStudies

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