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Poly[diaqua-(?(3)-1H-benzimidazole-5,6-dicarboxyl-ato-?N:O,O:O)magnesium(II)].

ABSTRACT: In the title complex, [Mg(C(9)H(4)N(2)O(4))(H(2)O)(2)](n), the Mg(II) atom is six-coordinated by one N and three O atoms from three different 1H-benzimidazole-5,6-dicarboxyl-ate ligands and two O atoms from two water mol-ecules, forming a slightly distorted octa-hedral geometry. The ligand links the Mg(II) centres into a three-dimensional network. Extensive N-H?O and O-H?O hydrogen bonds exist between the ligands and water mol-ecules, stabilizing the crystal structure.

SUBMITTER: Wang H

PROVIDER: S-EPMC2979947 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature

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Poly[diaqua-(μ(3)-1H-benzimidazole-5,6-dicarboxyl-ato-κN:O,O:O)magnesium(II)].

Wang Hao H Li Xiao-Fei XF Song Wen-Dong WD Ma Xiao-Tian XT Liu Juan-Hua JH

Acta crystallographica. Section E, Structure reports online 20100113 Pt 2

In the title complex, [Mg(C(9)H(4)N(2)O(4))(H(2)O)(2)](n), the Mg(II) atom is six-coordinated by one N and three O atoms from three different 1H-benzimidazole-5,6-dicarboxyl-ate ligands and two O atoms from two water mol-ecules, forming a slightly distorted octa-hedral geometry. The ligand links the Mg(II) centres into a three-dimensional network. Extensive N-H⋯O and O-H⋯O hydrogen bonds exist between the ligands and water mol-ecules, stabilizing the crystal structure. ...[more]

PMID: 21579629

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Poly[(?-1H-benzimidazole-5,6-dicarboxyl-ato)lead(II)].

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Poly[diaqua-?(4)-biphenyl-4,4'-dicarboxyl-ato-magnesium(II)].

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Poly[[tetraaqua-bis(?(3)-1H-benzimidazole-5,6-dicarboxyl-ato)dicobalt(II)] trihydrate].

Project description:The title complex, {[Co(2)(C(9)H(4)N(2)O(4))(2)(H(2)O)(4)]·3H(2)O}(n), was synthesized hydro-thermally. The unique Co(II) ion is coordin-ated in a distorted octa-hedral coordination environment by two water mol-ecules and three symmetry-related 1H-benzimid-azole-5,6-dicarboxyl-ate (Hbidc) ligands. The Hbidc ligands coordinate via a bis-chelating and mono-chelating carboxyl-ate group and by an imidazole group N atom, bridging the Co(II) ions and forming an extended two-dimensional structure in the ab plane. In the crystal structure, inter-molecular N-H?O and O-H?O hydrogen bonds connect complex and solvent water mol-ecules, forming a three-dimensional supermolecular network. One of the solvent water mol-ecules lies on a twofold rotation axis.

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Poly[diaqua-bis(?(3)-1H-benzimidazole-5,6-dicarboxyl-ato-?N:O,O:O)bis-(?(2)-1H,3H-benzimidazolium-5,6-dicarboxyl-ato-?O,O:O)digadolinium(III)].

Project description:In the title complex, [Gd(2)(C(9)H(4)N(2)O(4))(2)(C(9)H(5)N(2)O(4))(2)(H(2)O)(2)](n), two of the benzimidazole-5,6-dicarboxyl-ate ligands are pro-ton-ated at the imidazole groups. Each Gd(III) ion is coordinated by six O atoms and one N atom from five ligands and one water mol-ecule, displaying a distorted bicapped trigonal-prismatic geometry. The Gd(III) ions are linked by the carboxyl-ate groups and imidazole N atoms, forming a layer parallel to (001). These layers are further connected by O-H?O and N-H?O hydrogen bonds into a three-dimensional supra-molecular network.

| S-EPMC2971816 | biostudies-other

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