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Tetra-aqua-bis(1-hydr-oxy-2-naphthoato-?O)zinc(II).

ABSTRACT: In the title mononuclear complex, [Zn(C(11)H(7)O(3))(2)(H(2)O)(4)], the Zn(II) atom is located on a centre of inversion and is coordinated by two O atoms from two 1-hydr-oxy-2-naphthoate ligands and four water mol-ecules in an octa-hedral geometry. The structure is consolidated by inter-molecular O-H?O hydrogen bonding, as well as by a ?-? stacking inter-action [centroid-centroid distance 3.762?(2)Å] between adjacent naphthyl ring systems.

SUBMITTER: Song WD

PROVIDER: S-EPMC2914888 | biostudies-other | 2007

REPOSITORIES: biostudies-other

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Tetra-aqua-bis(1-hydr-oxy-2-naphthoato-κO)zinc(II).

Song Wen-Dong WD Yan Jian-Bin JB Wang Hao H Ji Li-Li LL

Acta crystallographica. Section E, Structure reports online 20071206 Pt 1

In the title mononuclear complex, [Zn(C(11)H(7)O(3))(2)(H(2)O)(4)], the Zn(II) atom is located on a centre of inversion and is coordinated by two O atoms from two 1-hydr-oxy-2-naphthoate ligands and four water mol-ecules in an octa-hedral geometry. The structure is consolidated by inter-molecular O-H⋯O hydrogen bonding, as well as by a π-π stacking inter-action [centroid-centroid distance 3.762 (2)Å] between adjacent naphthyl ring systems. ...[more]

PMID: 21200621

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Bis(μ-naphthalene-1,8-dicarboxyl-ato)bis-[aqua-(2,2'-bipyridine)zinc(II)] tetra-hydrate.

Project description:The title complex, [Zn(2)(C(12)H(6)O(4))(2)(C(10)H(8)N(2))(2)(H(2)O)(2)]·4H(2)O, is a binuclear complex with two independent Zn(II) ions in a slightly disorted trigonal bipyramidal environment, coordinated by one aqua ligand, two naphthalene-1,8-dicarboxyl-ate ligands and one 2,2'-bipyridine ligand. π-π Inter-actions [centroid-centroid distance of 3.8489 (5) Å] and O-H⋯O hydrogen bonds connect the mol-ecules, forming a three-dimensional structure.

| S-EPMC2959877 | biostudies-literature

Bis[hexa-aquacobalt(II)] 25,26,27,28-tetra-hydr-oxy-2,8,14,19-tetra-thia-calix[4]arene-5,11,17,23-tetra-sulfonate monohydrate.

Project description:In the crystal structure of the title compound, [Co(H(2)O)(6)](2)(C(24)H(12)O(16)S(8))·H(2)O, the thia-calix[4]arenetetra-sulfonate (= TCAS(4-)) anions adopt a cone-type conformation with an additional water mol-ecule as a guest mol-ecule in the hydro-phobic cavity. The TCAS(4-) anions are arranged in layers in an up-down fashion. These anionic layers alternate with cationic layers consisting of rather regular octahedral cations (symmetry m). Several medium O-H?O hydrogen-bond inter-actions exist between the aqua ligands of the [Co(H(2)O)(6)](2+) cations and the O atoms of the sulfonate groups. In addition to the two crystallographically different Co atoms, two S and four O atoms are situated on mirror planes.

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