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Tetra-methyl-ammonium hemi(terephthalate) dihydrate.

ABSTRACT: In the title compound, (CH(3))(4)N(+)·0.5C(8)H(4)O(4) (2-)·2H(2)O, the complete terephthalate dianion is completed by twofold symmetry and has a dihedral angle of 23.5 (2)° between the carboxyl-ate group and its parent ring. Two independent water mol-ecules serve as both donors and acceptor in the construction of undulating hydrogen-bonded host layers with various O-H⋯O contacts ocurring between the anion and two water mol-ecules. At the same time, the tetra-methyl-ammonium cations, as the sphere-like guest species, are arranged in two rows between neighboring host layers, with an approximate inter-layer distance of 7.36 Å, forming a sandwich-like crystal structure.

SUBMITTER: Yang Y

PROVIDER: S-EPMC3151964 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature

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Tetra-methyl-ammonium hemi(terephthalate) dihydrate.

Yang Yunxia Y Shi Laipeng L

Acta crystallographica. Section E, Structure reports online 20110622 Pt 7

In the title compound, (CH(3))(4)N(+)·0.5C(8)H(4)O(4) (2-)·2H(2)O, the complete terephthalate dianion is completed by twofold symmetry and has a dihedral angle of 23.5 (2)° between the carboxyl-ate group and its parent ring. Two independent water mol-ecules serve as both donors and acceptor in the construction of undulating hydrogen-bonded host layers with various O-H⋯O contacts ocurring between the anion and two water mol-ecules. At the same time, the tetra-methyl-ammonium cations, as the spher ...[more]

PMID: 21837146

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