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Bis(?-4-amino-3,5-dimethyl-4H-1,2,4-triazole)bis-[diiodidozinc(II)].

ABSTRACT: In the title compound, [Zn(2)I(4)(C(4)H(8)N(4))(2)], the Zn(II) atom is coordinated in a distorted tetra-hedral geometry by two N atoms from the triazole rings of two 4-amino-3,5-dimethyl-4H-1,2,4-triazole (admt) ligands and two iodide ligands. Doubly bridging admt ligands connect two Zn(II) atoms, forming a centrosymmetric dimer. Weak N-H?I and C-H?I hydrogen bonds play an important role in the inter-molecular packing.

SUBMITTER: Zhang R

PROVIDER: S-EPMC3050150 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature

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Bis(μ-4-amino-3,5-dimethyl-4H-1,2,4-triazole)bis-[diiodidozinc(II)].

Zhang Rongxian R Chen Qiuyun Q Yang Xiaofei X Wu Xiangyang X

Acta crystallographica. Section E, Structure reports online 20101204 Pt 1

In the title compound, [Zn(2)I(4)(C(4)H(8)N(4))(2)], the Zn(II) atom is coordinated in a distorted tetra-hedral geometry by two N atoms from the triazole rings of two 4-amino-3,5-dimethyl-4H-1,2,4-triazole (admt) ligands and two iodide ligands. Doubly bridging admt ligands connect two Zn(II) atoms, forming a centrosymmetric dimer. Weak N-H⋯I and C-H⋯I hydrogen bonds play an important role in the inter-molecular packing. ...[more]

PMID: 21522550

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Project description:The title complex, [Co(C(12)H(10)N(6))(2)(H(2)O)(2)](C(8)H(4)NO(6))(2), is composed of a mononuclear cobalt(II) cation and two 3-carb-oxy-5-nitro-benzoate anions for charge balance. In the cation, the Co(II) atom is six-coordinated in a distorted octa-hedral geometry. It bonds to two O atoms of two water mol-ecules, and two pairs of N atoms from two 4-amino-3,5-bis-(2-pyrid-yl)-4H-1,2,4-triazole mol-ecules, which behave as bidentate chelating ligands. There are intra-molecular N-H?N hydrogen bonds in the cation. In the crystal, there are a number of inter-molecular N-H?O and O-H?O hydrogen bonds, as well as inter-molecular ?-? stacking inter-actions [centroid-centroid distances = 3.657?(2) and 3.847?(2)?Å], that link the mol-ecules into two-dimensional networks lying parallel to the ab plane. The presence of C-H?O inter-actions leads to the formation of a three-dimensional network.

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