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Levocetirizinium dipicrate
There are two cation–dianion pairs in the asymmetric unit of the title compound, C(21)H(27)ClN(2)O(3) (2+)·2C(6)H(2)N(3)O(7) (−) {systematic name: 1-[2-(carboxymethoxy)ethyl]-4-[(R)-(4-chlorophenyl)phenylmethyl]piperazine-1,4-diium bis(2,4,6-trinitrophenolate)}. The piperazine group in th...
Autores principales: | , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2010
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3011381/ https://www.ncbi.nlm.nih.gov/pubmed/21589463 http://dx.doi.org/10.1107/S1600536810045733 |
Sumario: | There are two cation–dianion pairs in the asymmetric unit of the title compound, C(21)H(27)ClN(2)O(3) (2+)·2C(6)H(2)N(3)O(7) (−) {systematic name: 1-[2-(carboxymethoxy)ethyl]-4-[(R)-(4-chlorophenyl)phenylmethyl]piperazine-1,4-diium bis(2,4,6-trinitrophenolate)}. The piperazine group in the levocetirizinium cation is protonated at both N atoms. The acetyl end groups form R (2) (2)(8) hydrogen-bonded motifs with adjacent cations. Each picrate anion interacts with the proponated N atom in the cation through a bifurcated N—H⋯O hydrogen bond, forming R (1) (2)(6) ring motifs. Strong and weak intermolecular N—H⋯O and strong O—H⋯O hydrogen bonds, and weak π–ring and π–π stacking interactions [centroid–centroid distance = 3.7419 (14) Å] dominate the crystal packing, creating a three-dimensional supramolecular structure. |
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