Bis(2,4,6-trimethylpyridinium) tetrabromidozincate
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چکیده
In the title compound, (C(8)H(12)N)(2)[ZnBr(4)], the coordination geometry of the anion is approximately tetra-hedral. The Zn-Br bond lengths range from 2.3901 (19) to 2.449 (2) Å and the Br-Zn-Br angles range from 107.09 (8) to 112.48 (8)°. In the crystal, each [ZnBr(4)](2-) anion is connected to four cations through two N-H⋯Br and two C-H⋯Br hydrogen bonds, forming two-dimensional ⋯(cation)(2)⋯anion⋯(cation(2))⋯ sheets parallel to the bc plane. Within each sheet, the anions are arranged in stacks with no significant inter-anion Br⋯Br inter-actions [the shortest being > 4.3 Å], while the cations are in chains, with weak π-π stacking inter-actions [centroid-centroid distance = 3.991 Å] between cations inter-acting with the same anion.
منابع مشابه
Bis(2,4,6-trimethylpyridinium) hexachloridoplatinate(IV)
The asymmetric unit of the title compound, (C(8)H(12)N)(2)[PtCl(6)], contains one independent protonated 2,4,6-trimethyl-pyridinium cation and one half of a centrosymmetric [PtCl(6)](2-) anion. The Pt ion has an almost ideal octa-hedral coordination. In the crystal structure, intra-molecular N-H⋯Cl and inter-molecular C-H⋯Cl hydrogen bonds result in the formation of a supra-molecular structure.
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In the title compound, C(8)H(12)N(+)·NO(3) (-), the cation lies on a mirror plane and the N and one C atom lie on a twofold axis. In the crystal, the anions and cations are linked by N-H⋯O inter-actions along the b axis and a short N-O⋯π contact [3.2899 (5) Å] also occurs.
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The asymmetric unit of the title co-crystal, C(8)H(12)N(+)·C(7)H(4)NO(4) (-)·C(7)H(5)NO(4), contains two cations, two anions and two neutral 4-nitro-benzoic acid mol-ecules. In the crystal, O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds connect the ions and mol-ecules, forming a three-dimensional network.
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