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Bis{2-[bis-(2-hy-droxy-eth-yl)amino]-acetato-κO,N,O'}zinc(II).

ABSTRACT: In the crystal structure of the zinc(II) complex of bicine, [Zn(C(6)H(12)NO(4))(2)], the deprotonated amino acid O,N,O'-chelates to the metal atom through a carboxyl-ate O atom, a hy-droxy O atom and the N atom, the three atoms occupying fac positions of the distorted octa-hedron surrounding the metal atom. The metal atom lies on a center of inversion. The uncoordinated carboxyl-ate O atom is hydrogen bonded to the hy-droxy groups of adjacent mol-ecules, these two hydrogen bonds leading to the formation of a three-dimensional network.

SUBMITTER: Lo KM

PROVIDER: S-EPMC3008976 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Bis[μ-2-(4-hy-droxy-phen-yl)acetato]-κO,O':O;κO:O,O'-bis-{aqua-(4,4'-bipyridine-κN)bis-[2-(4-hy-droxy-phen-yl)acetato-κO,O']ytterbium(III)} monohydrate.

Project description:In the title dinuclear complex, [Yb(2)(C(8)H(7)O(3))(6)(C(10)H(8)N(2))(2)(H(2)O)(2)]·H(2)O, the Yb(III) atoms are coordinated by eight O atoms from four 2-(4-hy-droxy-phen-yl)acetate (HPAA) ligands and a water mol-ecule, and one N atom from a 4,4'-bipyridine (bipy) ligand in a distorted tricapped trigonal-prismatic geometry. Whereas four HPAA ligands coordinate to just two Yb(III) atoms, the remaining two ligands bridge the two Yb(III) atoms. In the crystal structure, O-H⋯O and O-H⋯N hydrogen bonds link the mol-ecules into a three-dimensional network.

| S-EPMC3009163 | biostudies-literature

Bis[μ-2-(4-hy-droxy-phen-yl)acetato]-κO,O':O;κO:O,O'-bis-{aqua-(4,4'-bipyridine-κN)bis-[2-(4-hy-droxy-phen-yl)acetato-κO,O']thulium(III)} mono-hydrate.

Project description:In the title dinuclear complex, [Tm(2)(C(8)H(7)O(3))(6)(C(10)H(8)N(2))(2)(H(2)O)(2)]·H(2)O, the Tm(III) atoms are coordinated by eight O atoms from four 2-(4-hy-droxy-phen-yl)acetate (HPAA) ligands and a water mol-ecule, and one N atom from a 4,4'-bipyridine ligand in a distorted tricapped trigonal-prismatic geometry. While four of the HPAA ligands coordinate to just one Tm atom, the remaining two HPAA ligands bridge the two Tm atoms. In the crystal, O-H⋯O and O-H⋯N hydrogen bonds link the mol-ecules into a three-dimensional network.

| S-EPMC3009223 | biostudies-literature

Bis[μ-2-(4-hy-droxy-phen-yl)acetato]-κO,O':O;κO:O,O'-bis-{aqua-(4,4'-bipyridine-κN)[2-(4-hy-droxy-phen-yl)acetato-κO,O']samarium(III)} monohydrate.

Project description:The dinuclear title complex, [Sm(2)(C(8)H(7)O(3))(6)(C(10)H(8)N(2))(2)(H(2)O)(2)]·H(2)O, contains two Sm(III) atoms, six deprotonated p-hy-droxy-phenyl-acetic acid (PAA) mol-ecules, two 4,4'-bipyridine (bipy) mol-ecules, two coordinated water mol-ecules and one solvent water molecule. Each Sm(III)ion is nine-coordinated by seven O atoms from four PAA ligands, one water O atom and one N atom from a bipy ligand in a distorted geometry. The PAA ligands are coordinated to the Sm(III) ion in bridging and bridging tridentate modes. The asymmetric unit also contains one uncoordinated water mol-ecule. The occurrence of numerous O-H⋯O and O-H⋯N hydrogen bonds involving coordinated and non-coordinated water mol-ecules builds up an intricate three-dimensional network.

| S-EPMC3011563 | biostudies-literature

Bis[μ-2-(4-hy-droxy-phen-yl)acetato]-κO,O':O;κO:O,O'-bis-{aqua-(4,4'-bi-pyridine-κN)[2-(4-hy-droxy-phen-yl)acetato-κO,O']erbium(III)} monohydrate.

Project description:The title dinuclear complex, [Er(2)(C(8)H(7)O(3))(6)(C(10)H(8)N(2))(2)(H(2)O)(2)]·H(2)O, contains two Er(III) atoms in the asymmetric unit, six 2-(4-hy-droxy-phen-yl)acetate (PAA) anions, two 4,4'-bipyridine (bipy) mol-ecules, two coordinated water mol-ecules and one solvent water mol-ecule. The central Er(III) atoms are nine-coordinated. The coordination environment includes six O atoms from three PAA anions, one bridging O atom from a PAA anion, one O atom from a water mol-ecule and an N atom from a bipy ligand in a distorted tricapped trigonal-prismatic geometry. The occurrence of numerous O-H⋯O and O-H⋯N hydrogen bonds involving coordinated and noncoordinated water as well as bipy groups builds up an intricate three-dimensional network.

| S-EPMC3011679 | biostudies-literature

[μ-2-(4-Hy-droxy-phen-yl)acetato]-κO:O,O';κO,O':O'-bis-{aqua-(4,4'-bi-pyridine-κN)bis-[2-(4-hy-droxy-phen-yl)acetato-κO,O']holmium(III)} mono-hydrate.

Project description:In the title dinuclear complex, [Ho(2)(C(8)H(7)O(3))(6)(C(10)H(8)N(2))(2)(H(2)O)(2)]·H(2)O, each of the two independent Ho(III) ions is coordinated by eight O atoms from four 4-hy-droxy-phenyl-acetate (HPAA) ligands and a water mol-ecule, and one N atom from a 4,4'-bipyridine (bipy) ligand in a distorted tricapped trigonal-prismatic geometry. The HPAA ligands are coordinated in bis-chelate, bridging and bridging tridentate modes. In the crystal, O-H⋯O and O-H⋯N hydrogen bonds link the mol-ecules into a three-dimensional network.

| S-EPMC3051499 | biostudies-literature

catena-Poly[[{diaqua-[2-(4-hy-droxy-phen-yl)acetato-κO,O']cerium(III)}-bis-[μ-2-(4-hy-droxy-phen-yl)acetato]-κO,O':O;κO:O,O'] 4,4'-bipyridine disolvate monohydrate].

Project description:In the polymeric title complex, {[Ce(C(8)H(7)O(3))(3)(H(2)O)(2)]·2C(10)H(8)N(2)·H(2)O}(n), the Ce(III) ion is coordinated by ten O atoms from four 2-(4-hy-droxy-phen-yl)acetate (HPAA) ligands and two water mol-ecules. One HPAA ligand coordinates just to one Ce(III) ion, whereas the remaining two bridge two Ce(III) ions. The 4,4'-bipyridine mol-ecule and one water mol-ecule are not coordinated to Ce. In the crystal, O-H⋯O and O-H⋯N hydrogen bonds link mol-ecules into a three-dimensional network.

| S-EPMC3011412 | biostudies-literature

trans-Bis(ethyl-enediamine)-bis-{2-[N-(2-hy-droxy-eth-yl)oxamoyl-amino]-benzoato}nickel(II).

Project description:The title mononuclear Ni(II) complex, [Ni(C(11)H(11)N(2)O(5))(2)(C(2)H(8)N(2))(2)], is built up by inversion symmetry associated with the central Ni atom. The ethyl-enediamine ligands are non-planar. The r.m.s. deviation from the mean plane of the five-membered Ni-ethyl-amine chelate ring plane is 0.1945 Å. In the crystal structure, complex mol-ecules are linked to each other via N-H⋯O and O--H⋯O hydrogen bonding through translation symmetry along the b and c axes, resulting in an extended supra-molecular network.

| S-EPMC3007825 | biostudies-literature

(2-Hy-droxy-acetato-κO)bis-(1,10-phenan-throline-κN,N')copper(II) nitrate.

Project description:In the title compound, [Cu(C(2)H(3)O(3))(C(12)H(8)N(2))(2)]NO(3), the Cu(II) atom is coordinated by two phenanthroline (phen) ligands and one carboxyl-O atom of a hy-droxy-acetate anion in a distorted square-pyramidal geometry. The hy-droxy group of the hy-droxy-acetate ligand links with the counter NO(3) (-) anion via a pair of bifurcated O-H⋯O hydrogen bonds. The centroid-centroid distance of 3.5676 (14) Å between benzene rings of parallel phen ligands of adjacent mol-ecules suggests the existence of π-π stacking. Weak inter-molecular C-H⋯O hydrogen bonding is also present in the crystal structure.

| S-EPMC3089357 | biostudies-literature

Crystal structure of bis-{2-[bis-(2-hy-droxy-eth-yl)amino]-ethanol-?(3) O,N,O'}zinc terephthalate.

Project description:In the title salt, [Zn(C6H15NO3)2](C8H4O4), the Zn(II) cation, located on a centre of inversion, is coordinated by four O atoms and two N atoms from two tridentate 2-[bis-(2-hy-droxy-eth-yl)amino]-ethanol (BHEA) ligands, giving rise to a slightly distorted octa-hedral geometry. The terephthalate dianion, located about a centre of inversion, is not coordinated to Zn(II) but is connected through O-H?O contacts with [Zn(BHEA)2](2+) cations, leading to a three-dimensional crystal structure.

| S-EPMC4257296 | biostudies-literature

Bis[2-(4-hy-droxy-phen-yl)acetato-κO]bis-(1,10-phenanthroline-κN,N')cadmium penta-hydrate.

Project description:In the title compound, [Cd(C(8)H(7)O(3))(2)(C(12)H(8)N(2))(2)]·5H(2)O, the Cd(II) ion is six-coordinated by two carboxylate O atoms of monodentate 2-(4-hy-droxy-phen-yl)acetate ligands and by four N atoms from two chelating 1,10-phenantroline ligands in a distorted trigonal-prismatic geometry. O-H⋯O hydrogen bonds between water mol-ecules and the complex mol-ecules result in the formation of a three-dimensional network. Four water mol-ecules act as single acceptors and double donors while the fifth water mol-ecule is involved as a single acceptor and single donor in an O-H⋯O inter-action and as a donor in an O-H⋯π inter-action.

| S-EPMC3051641 | biostudies-literature

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