1
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Preparation, crystal structure, luminescence and Hirshfeld surface of hydroxynaphthene-based compounds. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Zhou J, Jin S, He L, Xu Y, Gao X, Liu B, Chen Z, Wang D. Twelve Salts Fabricated from 2-amino-5-methylthiazole and Carboxylic Acids through Combination of Classical H-bonds and Weak Noncovalent Associations. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Preparation and characterization of five 3D crystalline adducts from caffeine and organic acids. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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4
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Wen X, Lu Y, Jin S, Zhu Y, Liu B, Wang D, Chen B, Wang P. Crystal structures of six salts from nicotinamide and organic acids by classical H-bonds and other noncovalent forces. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132332] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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6
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Wang Q, Sun Z, Li D, Ye K, Xie C, Zhang S, Jiang L, Zheng K, Pang Q. Determination of protonation state in molecular salt of minoxidil and 2,4-dihydroxybenzoic acid through a combined experimental and theoretical study: influence of proton transfer on biological activities. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131560] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Chen B, Ye W, Li Z, Jin S, Wang J, Guo M, Wang D. Structures of four organic acid-base adducts from 4-aminoantipyrine, 3,5-dinitrobenzoic acid, anthranilic acid, 5-nitrosalicylic acid, and 1, 5-naphthalenedisulfonic acid. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131602] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Radhika B, Prashanth J, Basavoju S, Jyothi S, Venkatram Reddy B. Synthesis, single-crystal X-ray diffraction, NLO and DFT studies of centrosymmetric 4-amino-3,5-dimethyl-1H-pyrazolium citrate monohydrate salt. Mol Phys 2022. [DOI: 10.1080/00268976.2021.2022797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- B. Radhika
- Department of Chemistry, Kakatiya University, Warangal, India
| | - J. Prashanth
- Department of Physics, Kakatiya University, Warangal, India
| | - Srinivas Basavoju
- Department of Chemistry, National Institute of Technology, Warangal, India
| | - S. Jyothi
- Department of Chemistry, Kakatiya University, Warangal, India
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Wu R, Chen Z, Gao X, Chen X, Jin S, He L, Chen B, Wang D. Preparation and characterization of eight crystalline supramolecular salts from 4-dimethylaminopyridine and aromatic acids. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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10
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Zhang Y, Zhang Y, Ye W, Li Z, Jin S, Guo M, Bai L, Wang D. Eleven adducts constructed from 4-methylbenzo[d]thiazol-2-amine and organic acids via coupling of classical H-bonds and noncovalent interactions. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Crystal structure of five solid forms from isonicotinamide and carboxylic acids assembled by classical hydrogen bonds and other noncovalent interactions. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Xu W, Hu K, Lu Y, Ye H, Jin S, Li M, Guo M, Wang D. The crystal structures of ten supramolecular salts of benzylamine and organic acids. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128554] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Perlovich G. Melting points of one- and two-component molecular crystals as effective characteristics for rational design of pharmaceutical systems. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2020; 76:696-706. [DOI: 10.1107/s2052520620007362] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/02/2020] [Indexed: 11/10/2022]
Abstract
Based on the review of the literature results the database of the fusion temperatures of two-component molecular crystals (1947 co-crystals) and individual components thereof was built up. To improve the design of co-crystals with predictable melting temperatures, the correlation equations connecting co-crystals and individual components melting points were deduced. These correlations were discovered for 18 co-crystals of different stoichiometric compositions. The correlation coefficients were analysed, and the conclusions about the main/determinative and slave components of a co-crystal were made. The comparative analysis of the melting points of co-crystals composed from the same components but with different stoichiometry showed a co-crystal melting temperature growth when increasing the content of a high-melting component. The differences in the melting temperatures were determined and discussed for the following: (a) monotropic polymorphic forms, (b) two-component crystals with the same composition and different stoichiometry, and (c) two-component crystals based on racemates and enantiomers. The database analysis revealed the active pharmaceutical ingredients (APIs) and co-formers (CFs) more particularly used for co-crystal design. The approach based on an efficacy parameter allowing the prediction of co-crystals with melting points lower than those of individual compounds was developed.
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14
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Mo L, Jin S, Zhang W, Guo J, Liu H, Wang D. The crystal structures of ten supramolecular adducts of benzylamine and organic acids. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Fang W, Chen B, Chen D, Wang S, Yan Y, Jin S, Xu W, Wang D. Seven supramolecular adducts of 4-dimethylaminopyridine and carboxylic acids constructed by classical H-Bonds and some noncovalent interactions. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127353] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Fang W, Ye X, Zhang Y, Zhang Y, Jin S, Xu W, Wang D. Nine supramolecular adducts of 4-dimethylaminopyridine and organic acids constructed by classical H-Bonds and some noncovalent interactions. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Dittrich B, Chan S, Wiggin S, Stevens JS, Pidcock E. Fast energy minimization of the CCDC drug-subset structures by molecule-in-cluster computations allows independent structure validation and model completion. CrystEngComm 2020. [DOI: 10.1039/d0ce00488j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Optimizing structures with computations on clusters of molecules permits generation of structure-specific restraints for refinement and structure validation.
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Affiliation(s)
| | | | - Seth Wiggin
- The Cambridge Crystallographic Data Center
- Cambridge
- UK
| | | | - Elna Pidcock
- The Cambridge Crystallographic Data Center
- Cambridge
- UK
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18
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Xu W, Lu Y, Xia Y, Liu B, Jin S, Zhong B, Wang D, Guo M. Seven 3D organic salts from 2-(imidazol-1-yl)-1-phenylethanone and acidic components. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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19
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Syntheses and structure characterization of ten acid-base hybrid crystals based on imidazole derivatives and mineral acids. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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21
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Ding A, Jin S, Jin S, Hu K, Lin Z, Liu H, Wang D. Crystal structures of eight 3D molecular adducts derived from bis-imidazole, bis(benzimidazole), and organic acids. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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22
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Lin Z, Hu K, Jin S, Ding A, Wang Y, Dong L, Gao X, Wang D. Crystal and molecular structures of sixteen charge-assisted hydrogen bond-mediated diisopropylammonium salts from different carboxylic acids. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Eleven supramolecular adducts of 5,7-dimethyl-1,8-naphthyridine-2-amine and organic acids assembled by classical hydrogen bonds and other noncovalent intermolecular interactions. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Lin Z, Jin S, Li X, Xiao X, Hu K, Guo M, Chi X, Liu H, Wang D. Syntheses and structure characterization of ten acid-base hybrid crystals based on N-containing aromatic brønsted bases and mineral acids. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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Chen X, Jin S, Zhang H, Xiao X, Liu B, Wang D. Structure of five molecular salts assembled from noncovalent associations between organic acids, imidazole, benzimidazole, and 1-(2-(1H-benzimidazol-1-yl)ethyl)-1H-benzimidazole. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.05.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Crystal structures of seven molecular salts derived from benzylamine and organic acidic components. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.03.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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27
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Sathya K, Dhamodharan P, Dhandapani M. Computational, spectral and structural studies of a new non linear optical crystal: 2-hydroxy pyridinium 3,5-dinitrobenzoate. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.10.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Muthuraja P, Sethuram M, Shanmugavadivu T, Dhandapani M. Single crystal X-ray diffraction and Hirshfeld surface analyses of supramolecular assemblies in certain hydrogen bonded heterocyclic organic crystals. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.05.083] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Zong Y, Shao H, Pang Y, Wang D, Liu K, Wang L. Multicomponent hydrogen-bonding organic solids constructed from 6-hydroxy-2-naphthoic acid and N-heterocycles: Synthesis, structural characterization and synthon discussion. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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30
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Izutsu KI, Koide T, Takata N, Ikeda Y, Ono M, Inoue M, Fukami T, Yonemochi E. Characterization and Quality Control of Pharmaceutical Cocrystals. Chem Pharm Bull (Tokyo) 2016; 64:1421-1430. [DOI: 10.1248/cpb.c16-00233] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Tatsuo Koide
- Division of Drugs, National Institute of Health Sciences
| | | | - Yukihiro Ikeda
- Analytical Development Laboratories, CMC Center, Takeda Pharmaceutical Co., Ltd
| | - Makoto Ono
- Analytical & Quality Evaluation Research Laboratories, Daiichi-Sankyo Co., Ltd
| | - Motoki Inoue
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Toshiro Fukami
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Etsuo Yonemochi
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University
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31
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Hydrogen bonded supramolecular structures of eight organic salts based on 2,6-diaminopyridine, and organic acids. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.06.054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Gao X, Zhang H, Wen X, Liu B, Jin S, Wang D. Structure of seven organic salts assembled from 2,6-diaminopyridine with monocarboxylic acids, dicarboxylic acids, and tetracarboxylic acids. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.03.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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33
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Crystal and molecular structures of twelve salts from isopropylamine and different organic acids. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Synthesis, structural characterization and Hirshfeld analysis studies of three novel co-crystals of trans-4-[(2-amino-3,5-dibrobenzyl) amino] cyclohexanol with hydroxyl benzoic acids. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.11.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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35
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Zhang Q, Li M, Mei X. A new polymorph of 1-hydroxy-2-naphthoic acid obtained during failed co-crystallization experiments. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2015; 71:119-21. [DOI: 10.1107/s2052520614026134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 11/27/2014] [Indexed: 11/11/2022]
Abstract
Pharmaceutical salt-forming acid 1-hydroxy-2-naphthoic acid (HNA) is widely used in pharmaceutical co-crystal preparation. In this work, we report a new polymorph of HNA obtained during attempted co-crystallization experiments. The reported form and the new form were fully characterized and their thermodynamic relationship was also established to be monotropic with the new form being the more stable form.
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Lü J, Perez-Krap C, Suyetin M, Alsmail NH, Yan Y, Yang S, Lewis W, Bichoutskaia E, Tang CC, Blake AJ, Cao R, Schröder M. A robust binary supramolecular organic framework (SOF) with high CO2 adsorption and selectivity. J Am Chem Soc 2014; 136:12828-31. [PMID: 25184689 PMCID: PMC4183619 DOI: 10.1021/ja506577g] [Citation(s) in RCA: 196] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Indexed: 12/18/2022]
Abstract
A robust binary hydrogen-bonded supramolecular organic framework (SOF-7) has been synthesized by solvothermal reaction of 1,4-bis-(4-(3,5-dicyano-2,6-dipyridyl)dihydropyridyl)benzene (1) and 5,5'-bis-(azanediyl)-oxalyl-diisophthalic acid (2). Single crystal X-ray diffraction analysis shows that SOF-7 comprises 2 and 1,4-bis-(4-(3,5-dicyano-2,6-dipyridyl)pyridyl)benzene (3); the latter formed in situ from the oxidative dehydrogenation of 1. SOF-7 shows a three-dimensional four-fold interpenetrated structure with complementary O-H···N hydrogen bonds to form channels that are decorated with cyano and amide groups. SOF-7 exhibits excellent thermal stability and solvent and moisture durability as well as permanent porosity. The activated desolvated material SOF-7a shows high CO2 adsorption capacity and selectivity compared with other porous organic materials assembled solely through hydrogen bonding.
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Affiliation(s)
- Jian Lü
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research
on the Structure of Matter, Chinese Academy
of Sciences, Fujian Fuzhou 350002, P. R. China
| | - Cristina Perez-Krap
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Mikhail Suyetin
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Nada H. Alsmail
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Yong Yan
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Sihai Yang
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - William Lewis
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Elena Bichoutskaia
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Chiu C. Tang
- Diamond
Light Source, Harwell Science and Innovation
Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
| | - Alexander J. Blake
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Rong Cao
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research
on the Structure of Matter, Chinese Academy
of Sciences, Fujian Fuzhou 350002, P. R. China
| | - Martin Schröder
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
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37
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Jin S, Zhu Q, Wei S, Wang D. Eight salts constructed from 4-phenylthiazol-2-amine and carboxylic acid derivatives through combination of strong hydrogen bonding and weak noncovalent interactions. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.06.040] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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38
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Jin S, Wang D. Structure of seven organic acid–base adducts formed between acids, 2-aminophenol, and 2-amino-4-chlorophenol. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.01.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Sandhu B, Draguta S, Kinnibrugh TL, Khrustalev VN, Timofeeva TV. Supramolecular synthesis based on piperidone derivatives and pharmaceutically acceptable co-formers. Acta Crystallogr C 2013; 69:421-7. [DOI: 10.1107/s0108270113006185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 03/04/2013] [Indexed: 11/10/2022] Open
Abstract
The target complexes, bis{(E,E)-3,5-bis[4-(diethylamino)benzylidene]-4-oxopiperidinium} butanedioate, 2C27H36N3O+·C4H4O42−, (II), and bis{(E,E)-3,5-bis[4-(diethylamino)benzylidene]-4-oxopiperidinium} decanedioate, 2C27H36N3O+·C10H16O42−, (III), were obtained by solvent-mediated crystallization of the active pharmaceutical ingredient (API) (E,E)-3,5-bis[4-(diethylamino)benzylidene]-4-piperidone and pharmaceutically acceptable dicarboxylic (succinic and sebacic) acids from ethanol solution. They have been characterized by melting point, IR spectroscopy and single-crystal X-ray diffraction. For the sake of comparison, the structure of the starting API, (E,E)-3,5-bis[4-(diethylamino)benzylidene]-4-piperidone methanol monosolvate, C27H35N3O·CH4O, (I), has also been studied. Compounds (II) and (III) represent salts containing H-shaped centrosymmetric hydrogen-bonded synthons, which are built from two parallel piperidinium cations and a bridging dicarboxylate dianion. In both (II) and (III), the dicarboxylate dianion resides on an inversion centre. The two cations and dianion within the H-shaped synthon are linked by two strong intermolecular N+—H...−OOC hydrogen bonds. The crystal structure of (II) includes two crystallographically independent formula units,AandB. The cation geometries of unitsAandBare different. The main N—C6H4—C=C—C(=O)—C=C—C6H4—N backbone of cationAhas a C-shaped conformation, while that of cationBadopts an S-shaped conformation. The same main backbone of the cation in (III) is practically planar. In the crystal structures of both (II) and (III), intermolecular N+—H...O=C hydrogen bonds between different H-shaped synthons further consolidate the crystal packing, forming columns in the [100] and [10\overline 1] directions, respectively. Salts (II) and (III) possess increased aqueous solubility compared with the original API and thus enhance the bioavailability of the API.
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Chen SP, Deng P, Yuan CF, Yuan LJ. A novel organic salt with water/humidity-induced fluorescence switching and heat-induced coloration performance. CrystEngComm 2013. [DOI: 10.1039/c2ce26457a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Abstract
Solid crystalline phases containing two cocrystallized components offer a new development pathway whereby one can potentially improve the physical characteristics (i.e., equilibrium solubility, dissolution rate, solid-state stability, etc.) of a drug substance that exhibits a profile that is less than desirable. In this commentary, the topic of pharmaceutical cocrystals will be briefly explored, and a short exposition of the solubility and dissolution rate advantages that have been realized in various systems will be provided. The Guidance for Industry document recently proposed by United States Food and Drug Administration will be outlined, and its requirements explained. Finally, the subset of pharmaceutical cocrystals that consist of a drug substance and a salt of that substance (termed a salt cocrystal) will be examined to illustrate this additional class of pharmaceutical cocrystals that may offer significant scientific and regulatory advantages.
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Affiliation(s)
- Harry G Brittain
- Center for Pharmaceutical Physics, Milford, New Jersey 08848, USA.
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42
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Brittain HG. Stereoselectivity in the Salt-Cocrystal Products formed by Phenylglycinol or Phenylglycine with their Respective Sodium or Hydrochloride Salts. Chirality 2012; 25:8-15. [DOI: 10.1002/chir.22103] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 07/02/2012] [Indexed: 11/07/2022]
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43
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Jin S, Wang D, Huang Y, Fang H, Wang T, Fu P, Ding L. Hydrogen bonded supramolecular framework in organic acid–base adducts: Crystal structures of five cocrystals/salts assembled from 2-methylquinoline with monocarboxylic acid, dicarboxylic acid, and tricarboxylic acid. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.02.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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