51
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Tan SL, Tiekink ERT. The 1:2 co-crystal formed between N, N'-bis(pyridin-4-ylmeth-yl)ethanedi-amide and benzoic acid: crystal structure, Hirshfeld surface analysis and computational study. Acta Crystallogr E Crystallogr Commun 2020; 76:102-110. [PMID: 31921461 PMCID: PMC6944079 DOI: 10.1107/s2056989019016840] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 11/10/2022]
Abstract
The crystal and mol-ecular structures of the title 1:2 co-crystal, C14H14N4O2·2C7H6O2, are described. The oxalamide mol-ecule has a (+)-anti-periplanar conformation with the 4-pyridyl residues lying to either side of the central, almost planar C2N2O2 chromophore (r.m.s. deviation = 0.0555 Å). The benzoic acid mol-ecules have equivalent, close to planar conformations [C6/CO2 dihedral angle = 6.33 (14) and 3.43 (10)°]. The formation of hy-droxy-O-H⋯N(pyrid-yl) hydrogen bonds between the benzoic acid mol-ecules and the pyridyl residues of the di-amide leads to a three-mol-ecule aggregate. Centrosymmetrically related aggregates assemble into a six-mol-ecule aggregate via amide-N-H⋯O(amide) hydrogen bonds through a 10-membered {⋯HNC2O}2 synthon. These are linked into a supra-molecular tape via amide-N-H⋯O(carbon-yl) hydrogen bonds and 22-membered {⋯HOCO⋯NC4NH}2 synthons. The contacts between tapes to consolidate the three-dimensional architecture are of the type methyl-ene-C-H⋯O(amide) and pyridyl-C-H⋯O(carbon-yl). These inter-actions are largely electrostatic in nature. Additional non-covalent contacts are identified from an analysis of the calculated Hirshfeld surfaces.
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Affiliation(s)
- Sang Loon Tan
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Edward R. T. Tiekink
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
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52
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Ke H, Chen QH, Liao JZ, Lu CZ. A multiple hydrogen-bonded three-dimensional supramolecular architecture composed of a unique three-fold interlocked anionic Zn( ii)-coordination architecture. CrystEngComm 2020. [DOI: 10.1039/d0ce00177e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A multiple hydrogen bonded 3D supramolecular architecture composed of interlocked anionic Zn(ii)-coordination architecture possesses two kinds of distinct cavities in the interlocked positions and between adjacent self-knitting layers respectively.
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Affiliation(s)
- Hua Ke
- Engineering Technology Research Center for Environmental Protection Materials
- Pingxiang University
- Pingxiang
- PR China
- State Key Laboratory of Structural Chemistry
| | - Qi-Hua Chen
- Engineering Technology Research Center for Environmental Protection Materials
- Pingxiang University
- Pingxiang
- PR China
| | - Jian-Zhen Liao
- Engineering Technology Research Center for Environmental Protection Materials
- Pingxiang University
- Pingxiang
- PR China
- State Key Laboratory of Structural Chemistry
| | - Can-Zhong Lu
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- PR China
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53
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Kusakawa T, Goto T, Hori A. Supramolecular association of M 2+⋯π induced by different electrostatic properties using naphthyl substituted β-diketonate complexes (metal = Cu, Pd, Pt). CrystEngComm 2020. [DOI: 10.1039/d0ce00416b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Expanded π-conjugated coordination complexes, [M(L2)2] (M = Cu2+, Pd2+, Pt2+; L2 = dinaphthoylmethanido−), were prepared and their unique electron contributions and electrophile/nucleophile characteristics were found due to the supramolecular associations.
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Affiliation(s)
- Takumi Kusakawa
- Graduate School of Engineering and Science
- Shibaura Institute of Technology
- Saitama 337-8570
- Japan
| | - Takayuki Goto
- Physics Division
- Sophia University
- Tokyo 102-8544
- Japan
| | - Akiko Hori
- Graduate School of Engineering and Science
- Shibaura Institute of Technology
- Saitama 337-8570
- Japan
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54
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Topić F, Lisac K, Arhangelskis M, Rissanen K, Cinčić D, Friščić T. Cocrystal trimorphism as a consequence of the orthogonality of halogen- and hydrogen-bonds synthons. Chem Commun (Camb) 2019; 55:14066-14069. [PMID: 31693025 DOI: 10.1039/c9cc06735c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
True trimorphic cocrystals, i.e. multi-component molecular crystals of identical composition that exhibit three polymorphic structures, are exceedingly rare and so far no halogen-bonded cocrystal system has been reported to exhibit trimorphism. Here we describe a unique example of a trimorphic cocrystal exhibiting both hydrogen and halogen bonds in which the differences between polymorphs reveal their orthogonality, evident by the apparently independent variation of well-defined hydrogen- and halogen-bonded motifs.
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Affiliation(s)
- Filip Topić
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., H3A 0B8, Montreal, Canada.
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55
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Brahma R, Singh MP, Baruah JB. Stacking among the clips of the poly-aromatic rings of phenazine with hydroxy-aromatics and photophysical properties. RSC Adv 2019; 9:33403-33412. [PMID: 35529104 PMCID: PMC9073320 DOI: 10.1039/c9ra07602f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 10/03/2019] [Indexed: 12/30/2022] Open
Abstract
Clip-like arrangements of molecules in the cocrystals of phenazine with hydroxy-aromatics in their respective self-assemblies and photophysical properties were presented. Phenazine cocrystals with 1,2-dihydroxybenzene provided assembly with butterfly-like arrangements. In these cocrystals, the phenazine molecules occurred in parallel pairs having extensive π-stacking. The clip-like cocrystals with 1,3-dihydroxybenzene also exhibited parallel pairs of phenazine molecules that were parallel cofacial π-stacked. The hydrated cocrystals of phenazine with 1,2,3-trihydroxybenzene had chains of parallel cofacial phenazine rings having three distinguishable π-separation distances among the centroids of the phenazine rings. Also, 2,7-dihydroxynaphthalene formed a clip-like cocrystal with phenazine, which encapsulated an additional molecule of phenazine. This cocrystal also provided chain-like parallel arrangements of the phenazine molecules. The emission and quantum yields of the cocrystals were determined by the integrating sphere method, which indicated that only the cocrystal of phenazine with 2,7-dihydroxynaphthalene showed monomer-like emission of phenazine and the rest of the cocrystals were in a quenched state. In the solution phase, quenching of the emission of hydroxynaphthalene was observed when phenazine was added to an independent solution of 2,7-dihydroxynaphthalene or another hydroxynaphthalene. However, when hydroxybenzenes were added to a solution of phenazine, fluorescence enhancements of phenazine occurred due to photo-electron transfer. π-Stackings control the photoluminescence efficiencies in solids, whereas in solutions, the ON or OFF processes are dependent on the hydroxyaromatics.![]()
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Affiliation(s)
- Rinki Brahma
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781 039 Assam India
| | - Munendra Pal Singh
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781 039 Assam India
| | - Jubaraj B Baruah
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781 039 Assam India
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56
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Mir NA, Dubey R, Desiraju GR. Strategy and Methodology in the Synthesis of Multicomponent Molecular Solids: The Quest for Higher Cocrystals. Acc Chem Res 2019; 52:2210-2220. [PMID: 31318527 DOI: 10.1021/acs.accounts.9b00211] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Crystal engineering is the art and science of making crystals by design. Crystallization is inherently a purifying phenomenon. Bringing together more than one organic compound into the same crystal always needs deliberate action. Cocrystals are important because they offer a route to the controlled modulation of crystal properties. The route to cocrystal synthesis was opened up with the heterosynthon concept, which considers the complementary recognition of chemical groups from different molecules. Using this concept, binary cocrystals of enormous variety have been generated, even as crystal engineering has evolved into a form of solid-state supramolecular synthesis. Introducing a third component (a component is somewhat arbitrarily defined as an organic substance that is a solid at room temperature, mostly with the idea of excluding solvates) in a stoichiometric manner requires substantially greater effort and a careful balance of intermolecular interactions-their strengths, directional properties, and distance falloff characteristics. The first systematic ternary cocrystal synthesis was reported around 15 years ago. Drawing in a fourth component in stoichiometric amounts is exceedingly difficult, and we reported such syntheses in 2016. To date, a limited number of ternary cocrystals have been realized (around 120 in all, with a half from our group) and an even smaller number of quaternary cocrystals (around 30, all from our group, barring one). It is impressive that our experiments largely yielded the intended higher cocrystal (three- or four-component) with very small traces of contaminating binaries and pure compounds. A fifth or sixth component may be brought into the solid in the manner of a solid solution in that these components are situated at one of the sites of the quaternary cocrystal. To date, five components have not been included stoichiometrically within the same crystal. This is still an open challenge. The merit in synthesizing (higher) cocrystals is that one can systematically engineer property modularity: Each component is associated with a distinct property. This is important in the pharmaceutical industry, where each component can, in principle, confer a different, desirable property-drug action, solubility, or permeability. However, difficult synthetic targets are also addressed in chemistry simply because they are there. The intellectual satisfaction in making something that is very difficult to make renders the enterprise worthwhile in itself, and new chemistry usually gets uncovered in the process. The development of synthetic organic chemistry can undoubtedly be credited to various reliable methods for chemical transformations, and many difficult total syntheses were achieved by employing these methods over two centuries of research. In contrast, supramolecular synthesis (of multicomponent cocrystals and other assemblies) is in no way at a similar level of sophistication because the subject is still relatively young. Our group and others have reported the synthesis of many higher cocrystals with reliable, reproducible, and robust design strategies. There is a general perception that the isolation of some of these cocrystals is a matter of luck! The crux of this Account is that far from being a serendipitous matter, higher cocrystals may only be made with a judicious combination of strategy and methodology-the essence of synthesis.
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Affiliation(s)
- Niyaz A. Mir
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, Karnataka, India
- Higher Education Department, Government Degree College Pattan, Pattan 193 121, Jammu and Kashmir, India
| | - Ritesh Dubey
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Gautam R. Desiraju
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, Karnataka, India
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57
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Palanisamy V, Sanphui P, Prakash M, Chernyshev V. Multicomponent solid forms of the uric acid reabsorption inhibitor lesinurad and cocrystal polymorphs with urea: DFT simulation and solubility study. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:1102-1117. [PMID: 31380793 DOI: 10.1107/s2053229619008829] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 06/20/2019] [Indexed: 11/11/2022]
Abstract
Lesinurad (systematic name: 2-{[5-bromo-4-(4-cyclopropylnaphthalen-1-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetic acid, C17H14BrN3O2S) is a selective uric acid reabsorption inhibitor related to gout, which exhibits poor aqueous solubility. High-throughput solid-form screening was performed to screen for new solid forms with improved pharmaceutically relevant properties. During polymorph screening, we obtained two solvates with methanol (CH3OH) and ethanol (C2H5OH). Binary systems with caffeine (systematic name: 3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione, C8H10N4O2) and nicotinamide (C6H6N2O), polymorphs with urea (CH4N2O) and eutectics with similar drugs, like allopurinol and febuxostat, were prepared using the crystal engineering approach. All these novel solid forms were confirmed by XRD, DSC and FT-IR. The crystal structures were solved by single-crystal and powder X-ray diffraction. The crystal structures indicate that the lesinurad molecule is highly flexible and the triazole moiety, along with the rotatable thioacetic acid (side chain) and cyclopropane ring, is almost perpendicular to the planar naphthalene moiety. The carboxylic acid-triazole heterosynthon in the drug is interrupted by the presence of methanol and ethanol molecules in their crystal structures and forms intermolecular macrocyclic rings. The caffeine cocrystal maintains the consistency of the acid-triazole heterosynthons as in the drug and, in addition, they are bound by several auxiliary interactions. In the binary system of nicotinamide and urea, the acid-triazole heterosynthon is replaced by an acid-amide synthon. Among the urea cocrystal polymorphs, Form I (P-1, 1:1) consists of an acid-amide (urea) heterodimer, whereas in Form II (P21/c, 2:2), both acid-amide heterosynthons and urea-urea dimers co-exist. Density functional theory (DFT) calculations further support the experimentally observed synthon hierarchies in the cocrystals. Aqueous solubility experiments of lesinurad and its binary solids in pH 5 acetate buffer medium indicate the apparent solubility order lesinurad-urea Form I (43-fold) > lesinurad-caffeine (20-fold) > lesinurad-allopurinol (12-fold) ≃ lesinurad-nicotinamide (11-fold) > lesinurad, and this order is correlated with the crystal structures.
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Affiliation(s)
- Vasanthi Palanisamy
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203, India
| | - Palash Sanphui
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203, India
| | - Muthuramalingam Prakash
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203, India
| | - Vladimir Chernyshev
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1-3 Leninskie Gory, Moscow 119991, Russian Federation
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58
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Paul M, Desiraju GR. From a Binary to a Quaternary Cocrystal: An Unusual Supramolecular Synthon. Angew Chem Int Ed Engl 2019; 58:12027-12031. [PMID: 31267635 DOI: 10.1002/anie.201904339] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Indexed: 11/08/2022]
Abstract
Formation of a stoichiometric quaternary cocrystal consisting of resorcinol (RES), tetramethylpyrazine (TMP), phenazine (PHE) and pyrene (PYR) is described. A closed tetrameric resorcinol-heterocycle synthon, unusual in that it has two different linker bases rather than just one, is observed in this four-component solid. The tetrameric synthon is formed by two RES molecules and the two pyridine bases TMP and PHE. The stoichiometric quaternary cocrystal grows in an epitaxial fashion on the surfaces of a RES.PHE binary cocrystal which is initially obtained from the mother liquor. By indexing the common crystal faces of the binary and quaternary cocrystals, and noting that no ternary solid is obtained, a plausible mechanism has been proposed for the formation of this rare supramolecular architecture.
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Affiliation(s)
- Mithun Paul
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560 012, India
| | - Gautam R Desiraju
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560 012, India
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59
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Paul M, Desiraju GR. From a Binary to a Quaternary Cocrystal: An Unusual Supramolecular Synthon. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904339] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mithun Paul
- Solid State and Structural Chemistry UnitIndian Institute of Science Bangalore 560 012 India
| | - Gautam R. Desiraju
- Solid State and Structural Chemistry UnitIndian Institute of Science Bangalore 560 012 India
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60
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Zheng Q, Rood SL, Unruh DK, Hutchins KM. Unique supramolecular complex of diclofenac: structural robustness, crystal-to-crystal solvent exchange, and mechanochemical synthesis. Chem Commun (Camb) 2019; 55:7639-7642. [PMID: 31198914 DOI: 10.1039/c9cc03946e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We describe an unexpected, cyclic supramolecular complex that results from self-assembly of the nonsteroidal anti-inflammatory drug, diclofenac and 4,4'-azopyridine. The cycles self-assemble into 1D columns occupied by solvent, which can be removed at elevated temperatures (>100 °C) while retaining crystallinity. The complex exhibits solvent exchange ability that occurs through crystal-to-crystal transformations. Finally, the complex can be synthesized using mechanochemistry. Materials exhibiting the structural framework and robustness described here could be applied to removal of hazardous materials or undesirable solvents.
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Affiliation(s)
- Qixuan Zheng
- Department of Chemistry and Biochemistry, Texas Tech University, 1204 Boston Avenue, Lubbock, Texas 79409, USA.
| | - Samantha L Rood
- Department of Chemistry and Biochemistry, Texas Tech University, 1204 Boston Avenue, Lubbock, Texas 79409, USA.
| | - Daniel K Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, 1204 Boston Avenue, Lubbock, Texas 79409, USA.
| | - Kristin M Hutchins
- Department of Chemistry and Biochemistry, Texas Tech University, 1204 Boston Avenue, Lubbock, Texas 79409, USA.
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61
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Substantiation to structure-property of pyrazine-based compounds by undeniable impress of its different connectivities. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.087] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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62
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Synthesis, Structures and Co-Crystallizations of Perfluorophenyl Substituted β-Diketone and Triketone Compounds. CRYSTALS 2019. [DOI: 10.3390/cryst9030175] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Perfluorophenyl-substituted compounds, 3-hydroxy-1,3-bis(pentafluorophenyl)-2- propen-1-one (H1) and 1,5-dihydroxy-1,5-bis(pentafluorophenyl)-1,4-pentadien-3-one (H22), were prepared in 56 and 30% yields, respectively, and only the enol forms were preferentially obtained among the keto-enol tautomerism. Molecular conformations and tautomerism of the fluorine-substituted compounds were certified based on X-ray crystallographic studies and density functional calculations. The solvent dependency of the absorption spectra was only observed for the fluorinated compounds. The compounds H1 and H22 quantitatively formed co-crystals with the corresponding non-perfluorinated compounds, dibenzoylmethane (H3) and 1,5-dihydroxy-1,5-diphenyl-1,4-pentadien-3-one (H24), respectively, through the arene–perfluoroarene interaction to give the 1:1 co-crystals H1•H3 and H22•H24, which were characterized by X-ray crystallographic and elemental analysis studies.
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63
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Juneja N, Unruh DK, Bosch E, Groeneman RH, Hutchins KM. Effects of dynamic pedal motion and static disorder on thermal expansion within halogen-bonded co-crystals. NEW J CHEM 2019. [DOI: 10.1039/c9nj04833b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermal expansion is investigated for halogen-bonded co-crystals containing molecules that exhibit dynamic motion, lack motion ability, or experience static disorder.
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Affiliation(s)
- Navkiran Juneja
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Daniel K. Unruh
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Eric Bosch
- Department of Chemistry
- Missouri State University
- Springfield
- USA
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64
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Sharada D, Saha A, Saha BK. Charge transfer complexes as colour changing and disappearing–reappearing colour materials. NEW J CHEM 2019. [DOI: 10.1039/c9nj00823c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Charge transfer complexes, made of suitably chosen electron-rich and electron-deficient components, can perform as vanishing colour, disappearing–reappearing colour and colour changing materials.
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Affiliation(s)
- Durgam Sharada
- Department of Chemistry
- Pondicherry University
- Pondicherry
- India
| | - Arijit Saha
- Department of Chemistry
- Pondicherry University
- Pondicherry
- India
| | - Binoy K. Saha
- Department of Chemistry
- Pondicherry University
- Pondicherry
- India
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65
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Gołdyn M, Larowska D, Nowak W, Bartoszak-Adamska E. Synthon hierarchy in theobromine cocrystals with hydroxybenzoic acids as coformers. CrystEngComm 2019. [DOI: 10.1039/c9ce01195a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cocrystals, solids composed of molecular and/or ionic compounds connected by noncovalent interactions, are objects of interest in crystal engineering. Theobromine, as an active pharmaceutical ingredient, was used in cocrystallization with dihydroxybenzoic acids.
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Affiliation(s)
- Mateusz Gołdyn
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - Daria Larowska
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - Weronika Nowak
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
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66
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Bosch E, Kruse SJ, Reinheimer EW, Rath NP, Groeneman RH. Regioselective [2 + 2] cycloaddition reaction within a pair of polymorphic co-crystals based upon halogen bonding interactions. CrystEngComm 2019. [DOI: 10.1039/c9ce01379b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A pair of photoreactive polymorphic co-crystals that undergo a regioselective solid-state [2 + 2] cycloaddition reaction that yields exclusively the head-to-tail photoproduct is reported.
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Affiliation(s)
- Eric Bosch
- Department of Chemistry
- Missouri State University
- Springfield
- USA
| | | | | | - Nigam P. Rath
- Department of Chemistry and Biochemistry and the Center for Nanoscience
- University of Missouri-St. Louis
- St. Louis
- USA
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67
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Song Y, Wang LY, Liu F, Li YT, Wu ZY, Yan CW. Simultaneously enhancing the in vitro/in vivo performances of acetazolamide using proline as a zwitterionic coformer for cocrystallization. CrystEngComm 2019. [DOI: 10.1039/c9ce00270g] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesized first acetazolamide zwitterionic cocrystal highlights simultaneously-increasing solubility and permeability of acetazolamide, which successfully translate into enhanced bioavailability.
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Affiliation(s)
- Yu Song
- School of Medicine and Pharmacy and College of Marine Life Science
- Ocean University of China
- Qingdao
- PR China
| | - Ling-Yang Wang
- School of Medicine and Pharmacy and College of Marine Life Science
- Ocean University of China
- Qingdao
- PR China
| | - Fang Liu
- School of Medicine and Pharmacy and College of Marine Life Science
- Ocean University of China
- Qingdao
- PR China
| | - Yan-Tuan Li
- School of Medicine and Pharmacy and College of Marine Life Science
- Ocean University of China
- Qingdao
- PR China
- Laboratory for Marine Drugs and Bioproducts
| | - Zhi-Yong Wu
- School of Medicine and Pharmacy and College of Marine Life Science
- Ocean University of China
- Qingdao
- PR China
| | - Cui-Wei Yan
- School of Medicine and Pharmacy and College of Marine Life Science
- Ocean University of China
- Qingdao
- PR China
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68
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Jones CL, Skelton JM, Parker SC, Raithby PR, Walsh A, Wilson CC, Thomas LH. Living in the salt-cocrystal continuum: indecisive organic complexes with thermochromic behaviour. CrystEngComm 2019. [DOI: 10.1039/c8ce02066c] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The thermochromic behaviour of the haloaniline – 3,5-dinotrobenzoic acid cocrystals over the temperature range from 30–108 °C.
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Affiliation(s)
| | | | - Stephen C. Parker
- Department of Chemistry
- University of Bath
- Bath BA2 7AY
- UK
- School of Chemistry
| | | | - Aron Walsh
- Department of Materials
- Imperial College, London
- London SW7 2AZ
- UK
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69
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Crawford AW, Groeneman RH, Unruh DK, Hutchins KM. Cooling-rate dependent single-crystal-to-single-crystal phase transition in an organic co-crystal. Chem Commun (Camb) 2019; 55:3258-3261. [DOI: 10.1039/c9cc00836e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A reversible single-crystal-to-single-crystal phase transition is achieved via slow cooling; flash cooling locks the crystal in a kinetically trapped phase.
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Affiliation(s)
- Adam W. Crawford
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | | | - Daniel K. Unruh
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
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