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Tetra-kis(2,6-diamino-pyridinium) diphthalate 2,6-diamino-pyridine.

ABSTRACT: In the title compound, 4C(5)H(8)N(3) (+)·2C(8)H(4)O(4) (2-)·C(5)H(7)N(3), the asymmetric unit consists of two protonated diamino-pyridine cations, one phthalate anion and one half of a diamino-pyridine mol-ecule, which has twofold rotation symmetry and is disordered over two positions with a site-occupancy ratio of 0.534?(3):0.466?(3). In the disordered structure, both pyridine rings are essentially planar, with maximum deviations of 0.011?(2) and 0.006?(2)?Å, and these two rings are inclined to one another at a dihedral angle of 79.86?(10)°. In the crystal structure, inter-molecular N-H?O and C-H?O hydrogen bonds link the ions and mol-ecules into a three-dimensional network. The structure is further stabilized by C-H?? inter-actions.

SUBMITTER: Al-Dajani MT

PROVIDER: S-EPMC2971263 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature

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Tetra-kis(2,6-diamino-pyridinium) diphthalate 2,6-diamino-pyridine.

Al-Dajani Mohammad T M MT Salhin Abdusalam A Mohamed Nornisah N Loh Wan-Sin WS Fun Hoong-Kun HK

Acta crystallographica. Section E, Structure reports online 20091031 Pt 11

In the title compound, 4C(5)H(8)N(3) (+)·2C(8)H(4)O(4) (2-)·C(5)H(7)N(3), the asymmetric unit consists of two protonated diamino-pyridine cations, one phthalate anion and one half of a diamino-pyridine mol-ecule, which has twofold rotation symmetry and is disordered over two positions with a site-occupancy ratio of 0.534 (3):0.466 (3). In the disordered structure, both pyridine rings are essentially planar, with maximum deviations of 0.011 (2) and 0.006 (2) Å, and these two rings are inclined to ...[more]

PMID: 21578508

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