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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Nalla, Sowjanya Bond, Marcus R. |
| Description | Country affiliation: United States Author Affiliation: Nalla S ( Department of Chemistry, Southeast Missouri State University, Cape Girardeau, MO 63701, USA.) |
| Abstract | 1,2,3-Trimethylpyridinium aquatrichloridocuprate(II), (C $_{8}H$ $_{12}N)[CuCl$ $_{3}(H$ $_{2}O)],$ (I), 3,4-dimethylpyridinium aquatrichloridocuprate(II), (C $_{7}H$ $_{10}N)[CuCl$ $_{3}(H$ $_{2}O)],$ (II), and 2,3-dimethylpyridinium aquatrichloridocuprate(II), (C $_{7}H$ $_{10}N)[CuCl$ $_{3}(H$ $_{2}O)],$ (III), exhibit the same fundamental structure, with (I) and (II) isomorphous and with the unit-cell constants of (III) similar to the reduced unit-cell constants of (I) and (II). The distorted square-planar [CuCl $_{3}(H$ $_{2}O)]$ $^{-}$ complex [mirror symmetric in (I) and (II)] forms two semicoordinate Cu Cl bonds to a neighboring complex to produce a dimer with 2/ m symmetry [only inversion symmetry in (III)]. The semicoordinate Cu Cl bond length of the dimer shows significant elongation at 295 K compared with that at 100 K, while the coordinate Cu-Cl bond lengths are slightly contracted at 295 K compared with those at 100 K. The inorganic dimers are linked by eight hydrogen bonds to four neighboring dimers to establish a checkerboard network layer in the ab plane, with voids between the dimers that accommodate, on both sides, inversion-related organic cation pairs. The organic cations are required by mirror-plane symmetry to be disordered in (I) and (II). The organic cations and [CuCl $_{3}(H$ $_{2}O)]$ $^{-}$ complexes are nearly coplanar and tilted out of the layer plane to establish a hybrid organic-inorganic layer structure parallel to (202) [(11 ) in (III)], with hydrate columns (defined by water molecules) and hydrophobic columns (defined by methyl groups) parallel to each other [and along the 2 $_{1}$ axes in (I) and (II)]. In 1,1-dimethylpiperidinium aquatrichloridocuprate(II), (C $_{7}H$ $_{16}N)[CuCl$ $_{3}(H$ $_{2}O)],$ (IV), the bulkier organic cation prevents semicoordinate bonding between complexes, which are hydrogen bonded side-to-side in zigzag chains that place water molecules in columns along half of the 2 $_{1}$ axes. |
| File Format | HTM / HTML |
| e-ISSN | 20532296 |
| Journal | Acta Crystallographica Section C Crystal Structure Communications |
| Issue Number | Pt 6 |
| Volume Number | 67 |
| Language | English |
| Publisher | IUCr/Wiley |
| Publisher Date | 2011-06-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Analytical Chemistry Discipline Crystallography |
| Content Type | Text |
| Resource Type | Article |
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