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(E)-1-Methyl-4-[2-(2-naphth-yl)vin-yl]pyridinium iodide.

ABSTRACT: In the title compound, C(18)H(16)N(+)·I(-), the cation is disordered over two orientations related by a 180° rotation about its long axis with occupancies of 0.554?(7) and 0.446?(7). Both disorder components exist in an E configuration. The dihedral angle between the pyridinium ring and the naphthalene ring system is 4.7?(6)° in the major disorder component and 1.6?(8)° in the minor component. In the crystal structure, centrosymmetrically related cations are stacked along the a axis, with significant ?-? inter-actions between the pyridinium ring and the naphthalene ring system [centroid-centroid distance = 3.442?(9)?Å]. The iodide ions are located between adjacent columns of cations. The cations are linked to the iodide ions by C-H?I inter-actions. Weak C-H?? inter-actions involving the methyl group are also observed.

SUBMITTER: Fun HK

PROVIDER: S-EPMC2969718 | biostudies-literature | 2009 May

REPOSITORIES: biostudies-literature

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(E)-1-Methyl-4-[2-(2-naphth-yl)vin-yl]pyridinium iodide.

Fun Hoong-Kun HK Chanawanno Kullapa K Chantrapromma Suchada S

Acta crystallographica. Section E, Structure reports online 20090529 Pt 6

In the title compound, C(18)H(16)N(+)·I(-), the cation is disordered over two orientations related by a 180° rotation about its long axis with occupancies of 0.554 (7) and 0.446 (7). Both disorder components exist in an E configuration. The dihedral angle between the pyridinium ring and the naphthalene ring system is 4.7 (6)° in the major disorder component and 1.6 (8)° in the minor component. In the crystal structure, centrosymmetrically related cations are stacked along the a axis, with signif ...[more]

PMID: 21583250

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