101
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Saunders LK, Pallipurath AR, Gutmann MJ, Nowell H, Zhang N, Allan DR. A quantum crystallographic approach to short hydrogen bonds. CrystEngComm 2021; 23:6180-6190. [PMID: 34588923 PMCID: PMC8436739 DOI: 10.1039/d1ce00355k] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 07/27/2021] [Indexed: 11/21/2022]
Abstract
In this work we use high-resolution synchrotron X-ray diffraction for electron density mapping, in conjunction with ab initio modelling, to study short O-H⋯O and O+-H⋯O- hydrogen bonds whose behaviour is known to be tuneable by temperature. The short hydrogen bonds have donor-acceptor distances in the region of 2.45 Å and are formed in substituted urea and organic acid molecular complexes of N,N'-dimethylurea oxalic acid 2 : 1 (1), N,N-dimethylurea 2,4-dinitrobenzoate 1 : 1 (2) and N,N-dimethylurea 3,5-dinitrobenzoic acid 2 : 2 (3). From the combined analyses, these complexes are found to fall within the salt-cocrystal continuum and exhibit short hydrogen bonds that can be characterised as both strong and electrostatic (1, 3) or very strong with a significant covalent contribution (2). An additional charge assisted component is found to be important in distinguishing the relatively uncommon O-H⋯O pseudo-covalent interaction from a typical strong hydrogen bond. The electron density is found to be sensitive to the extent of static proton transfer, presenting it as a useful parameter in the study of the salt-cocrystal continuum. From complementary calculated hydrogen atom potentials, we attribute changes in proton position to the molecular environment. Calculated potentials also show zero barrier to proton migration, forming an 'energy slide' between the donor and acceptor atoms. The better fundamental understanding of the short hydrogen bond in the 'zone of fluctuation' presented in a salt-cocrystal continuum, enabled by studies like this, provide greater insight into their related properties and can have implications in the regulation of pharmaceutical materials.
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Affiliation(s)
- Lucy K Saunders
- Diamond Light Source, Harwell Science and Innovation Campus Didcot OX11 0DE UK
| | - Anuradha R Pallipurath
- School of Chemical and Process Engineering, University of Leeds Leeds LS2 9JT UK
- Research Complex at Harwell Didcot Oxfordshire OX11 0DE UK
- EPSRC Centre for Innovative Manufacturing in Continuous Manufacturing and Advanced Crystallization, University of Strathclyde G1 1RD UK
| | - Matthias J Gutmann
- ISIS Pulsed Muon and Neutron Source, Rutherford Appleton Laboratory, Harwell Oxford Didcot OX11 0QX UK
| | - Harriott Nowell
- Diamond Light Source, Harwell Science and Innovation Campus Didcot OX11 0DE UK
| | - Ningjin Zhang
- Chemistry, Faculty of Natural and Environmental Sciences, Highfield Campus, University of Southampton Southampton SO17 1HE UK
| | - David R Allan
- Diamond Light Source, Harwell Science and Innovation Campus Didcot OX11 0DE UK
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102
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Plater MJ, Harrison WTA. Crystalline Forms of Trazodone Dihydrates. Molecules 2021; 26:molecules26175361. [PMID: 34500794 PMCID: PMC8433896 DOI: 10.3390/molecules26175361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/27/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, treatment of anhydrous trazodone powder with ammonium carbamate in warm water crystallised two new polymorphs or dihydrates of trazodone after 5 h, whose structures were determined by X-ray single crystal diffraction. Each dihydrate contains infinite zigzag hydrogen-bonded chains of water molecules, which are stabilised by the N4 acceptor atom of the piperazine ring and the pendant carbonyl O1 atom of the triazole ring, as well as other water molecules. The strong dipole moment expected for the O1 atom makes it a good hydrogen bond acceptor for stabilising the chains of water molecules. Each molecule of trazodone has a similar conformation in both hydrates, except for the propyl chains, which adopt different conformations: anti-gauche in the β hydrate (triazole N-C-C-C and C-C-C-piperazine N) and anti-anti in the γ hydrate. Both piperazine rings adopt chair conformations, and the exocyclic N-C bonds are in equatorial orientations. The Hirshfeld surfaces and two-dimensional fingerprint plots for the polymorphs were calculated using CrystalExplorer17, which indicated contacts significantly shorter than the sum of the van der Waals radii in the vicinity of the piperazine N4 and triazole O1 atoms corresponding to the strong hydrogen bonds accepted by these atoms.
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103
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Guo M, Rosbottom I, Zhou L, Yong CW, Zhou L, Yin Q, Todorov IT, Errington E, Heng JYY. Triglycine (GGG) Adopts a Polyproline II (pPII) Conformation in Its Hydrated Crystal Form: Revealing the Role of Water in Peptide Crystallization. J Phys Chem Lett 2021; 12:8416-8422. [PMID: 34436909 DOI: 10.1021/acs.jpclett.1c01622] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Polyproline II (pPII) is a left-handed 31-helix conformation, which has been observed to be the most abundant secondary structure in unfolded peptides and proteins compared to α-helix and β-sheet. Although pPII has been reported as the most stable conformation for several unfolded short chain peptides in aqueous solution, it is rarely observed in their solid state. Here, we show for the first time a glycine homopeptide (gly-gly-gly) adopting the pPII conformation in its crystalline dihydrate structure. The single crystal X-ray structure with molecular dynamic simulation suggests that a network of water and the charged carboxylate group is critical in stabilizing the pPII conformation in solid state, offering an insight into the structures of unfolded regions of proteins and the role of water in peptide crystallization.
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Affiliation(s)
| | | | - Lina Zhou
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Chin W Yong
- Scientific Computing Department, UKRI Science and Technology Facilities Council, Daresbury Laboratory, Warrington WA4 4AD, U.K
| | - Ling Zhou
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Qiuxiang Yin
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Ilian T Todorov
- Scientific Computing Department, UKRI Science and Technology Facilities Council, Daresbury Laboratory, Warrington WA4 4AD, U.K
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104
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Burger S, Grover S, Butler KT, Boström HLB, Grau-Crespo R, Kieslich G. Tilt and shift polymorphism in molecular perovskites. MATERIALS HORIZONS 2021; 8:2444-2450. [PMID: 34870297 DOI: 10.1039/d1mh00578b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Molecular perovskites, i.e. ABX3 coordination polymers with a perovskite structure, are a chemically diverse material platform for studying fundamental and applied materials properties such as barocalorics and improper ferroelectrics. Compared to inorganic perovskites, the use of molecular ions on the A- and X-site of molecular perovskites leads to new geometric and structural degrees of freedom. In this work we introduce the concept of tilt and shift polymorphism, categorising irreversible perovskite-to-perovskite phase transitions in molecular perovskites. As a model example we study the new molecular perovskite series [(nPr)3(CH3)N]M(C2N3)3 with M = Mn2+, Co2+, Ni2+, and nPr = n-propyl, where different polymorphs crystallise in the perovskite structure but with different tilt systems depending on the synthetic conditions. Tilt and shift polymorphism is a direct ramification of the use of molecular building units in molecular perovskites and as such is unknown for inorganic perovskites. Given the role of polymorphism in materials science, medicine and mineralogy, and more generally the relation between physicochemical properties and structure, the concept introduced herein represents an important step in classifying the crystal chemistry of molecular perovskites and in maturing the field.
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Affiliation(s)
- Stefan Burger
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany.
| | - Shivani Grover
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6DX, UK.
| | - Keith T Butler
- Rutherford Appleton Laboratory, Scientific Computing Department (SciML), Didcot OX11 0QX, UK
| | - Hanna L B Boström
- Max-Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Ricardo Grau-Crespo
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6DX, UK.
| | - Gregor Kieslich
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany.
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105
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Hetmańczyk Ł, Goremychkin EA, Waliszewski J, Vener MV, Lipkowski P, Tolstoy PM, Filarowski A. Spectroscopic Identification of Hydrogen Bond Vibrations and Quasi-Isostructural Polymorphism in N-Salicylideneaniline. Molecules 2021; 26:molecules26165043. [PMID: 34443632 PMCID: PMC8401763 DOI: 10.3390/molecules26165043] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 11/16/2022] Open
Abstract
The ortho-hydroxy aryl Schiff base 2-[(E)-(phenylimino)methyl]phenol and its deutero-derivative have been studied by the inelastic incoherent neutron scattering (IINS), infrared (IR) and Raman experimental methods, as well as by Density Functional Theory (DFT) and Density-Functional Perturbation Theory (DFPT) simulations. The assignments of vibrational modes within the 3500–50 cm−1 spectral region made it possible to state that the strong hydrogen bond in the studied compound can be classified as the so-called quasi-aromatic bond. The isotopic substitution supplemented by the results of DFT calculations allowed us to identify vibrational bands associated with all five major hydrogen bond vibrations. Quasi-isostructural polymorphism of 2-[(E)-(phenylimino)methyl]phenol (SA) and 2-[(E)-(phenyl-D5-imino)methyl]phenol (SA-C6D5) has been studied by powder X-ray diffraction in the 20–320 K temperature range.
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Affiliation(s)
- Łukasz Hetmańczyk
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387 Cracow, Poland;
| | - Eugene A. Goremychkin
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research 6 F. Joliot-Curie str., 141980 Dubna, Russia;
| | - Janusz Waliszewski
- Faculty of Physics, University of Bialystok, 1L Ciolkowskiego str., 15-245 Bialystok, Poland;
| | - Mikhail V. Vener
- Quantum Chemistry Department, Mendeleev University of Chemical Technology, Miusskaya Square 9, 125047 Moscow, Russia;
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991 Moscow, Russia
| | - Paweł Lipkowski
- Department of Physical and Quantum Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańnskiego 27, 50-370 Wrocław, Poland;
| | - Peter M. Tolstoy
- Institute of Chemistry, St. Petersburg State University, Universitetskij pr. 26, 198504 Saint Petersburg, Russia
- Correspondence: (P.M.T.); (A.F.); Tel.: +48-71-375-7229 (A.F.)
| | - Aleksander Filarowski
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research 6 F. Joliot-Curie str., 141980 Dubna, Russia;
- Faculty of Chemistry, University of Wrocław 14 F. Joliot-Curie str., 50-383 Wrocław, Poland
- Correspondence: (P.M.T.); (A.F.); Tel.: +48-71-375-7229 (A.F.)
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106
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107
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Ito F, Naganawa R, Fujimoto Y, Takimoto M, Mochiduki Y, Katsumi S. Real-Time Fluorescence Visualization of Nanoparticle Aggregation and the Polymorph-Transition Process of a Mechanofluorochromic Difluoroboron-β-Diketone Derivative. Chemphyschem 2021; 22:1662-1666. [PMID: 34181311 DOI: 10.1002/cphc.202100370] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/11/2021] [Indexed: 12/16/2022]
Abstract
The use of organic nanomaterials in biomedical and optical devices has been widely studied. The key to improving the performance and stability of these devices is to control the fabrication process, which determines the phase stability and photophysical properties. In this study, fluorescence changes were observed during the reprecipitation process of mechanofluorochromic molecules of dibenzoyl(methanato)boron difluoride. The cyan-emission phase (C-phase) was first identified. The time evolution of the resolved fluorescence spectra revealed that the green-emission phase (G-phase) was formed from the amorphous phase with yellow emission via the C-phase, in addition to the direct formation of the G-phase. Combined with the results of the investigation into the thermal properties, the fluorescence changes clearly indicate a two-step nucleation process and Ostwald's rule of stages for polymorph transition, which enables us to not only provide guidance for controlling the fabrication process but also propose the ripening process for organic nanoparticle formation.
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Affiliation(s)
- Fuyuki Ito
- Department of Chemistry, Institution of Education, Shinshu University, 6-ro, Nishinagano, Nagano, 380-8544, Japan
| | - Ryuji Naganawa
- Department of Chemistry, Institution of Education, Shinshu University, 6-ro, Nishinagano, Nagano, 380-8544, Japan
| | - Yushi Fujimoto
- Department of Chemistry, Institution of Education, Shinshu University, 6-ro, Nishinagano, Nagano, 380-8544, Japan
| | - Maori Takimoto
- Department of Chemistry, Institution of Education, Shinshu University, 6-ro, Nishinagano, Nagano, 380-8544, Japan
| | - Yoshifumi Mochiduki
- Department of Chemistry, Institution of Education, Shinshu University, 6-ro, Nishinagano, Nagano, 380-8544, Japan
| | - Shiho Katsumi
- Graduate School of Science and Technology, Shinshu University, Institution 3-15-1, Tokida, Ueda, 386-8567, Japan
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108
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Medina-Mercado I, Colin-Molina A, Barquera-Lozada JE, Rodríguez-Molina B, Porcel S. Gold-Catalyzed Ascorbic Acid-Induced Arylative Carbocyclization of Alkynes with Aryldiazonium Tetrafluoroborates. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ignacio Medina-Mercado
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - Abraham Colin-Molina
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - José Enrique Barquera-Lozada
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - Braulio Rodríguez-Molina
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - Susana Porcel
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Ciudad de México 04510, México
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109
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Penha F, Gopalan A, Meijlink JC, Ibis F, Eral HB. Selective Crystallization of d-Mannitol Polymorphs Using Surfactant Self-Assembly. CRYSTAL GROWTH & DESIGN 2021; 21:3928-3935. [PMID: 34276257 PMCID: PMC8276574 DOI: 10.1021/acs.cgd.1c00243] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/11/2021] [Indexed: 05/18/2023]
Abstract
Selective crystallization of polymorphs is highly sought after in industrial practice. Yet, state-of-the-art techniques either use laboriously engineered solid surfaces or strenuously prepared heteronucleants. We propose an approach where surfactants in solution self-assemble effortlessly into mesoscopic structures dictating the polymorphic outcome of the target solute. Sodium dodecyl sulfate (SDS) surfactant is used as a tailored additive to crystallize different polymorphic forms of a model active pharmaceutical ingredient, d-mannitol. Different mesoscopic phases of SDS template particular polymorphs: packed monolayers, micelles, and crystals favored the β, α, and δ forms of d-mannitol, respectively. A synergistic effect of topological templating and molecular interactions is proposed as the rationale behind the observed selective crystallization of polymorphs. This crystal engineering technique suggests that surfactant self-assemblies can be used as tailored templates for polymorphic control.
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Affiliation(s)
- Frederico
Marques Penha
- Department
of Chemical Engineering, KTH Royal Institute
of Technology, Teknikringen
42, SE100-44 Stockholm, Sweden
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat
39, 2628 CB Delft, The Netherlands
| | - Ashwin Gopalan
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat
39, 2628 CB Delft, The Netherlands
| | - Jochem Christoffel Meijlink
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat
39, 2628 CB Delft, The Netherlands
| | - Fatma Ibis
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat
39, 2628 CB Delft, The Netherlands
| | - Huseyin Burak Eral
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat
39, 2628 CB Delft, The Netherlands
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110
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Hetmańczyk Ł, Szklarz P, Kwocz A, Wierzejewska M, Pagacz-Kostrzewa M, Melnikov MY, Tolstoy PM, Filarowski A. Polymorphism and Conformational Equilibrium of Nitro-Acetophenone in Solid State and under Matrix Conditions. Molecules 2021; 26:molecules26113109. [PMID: 34067498 PMCID: PMC8197010 DOI: 10.3390/molecules26113109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 05/20/2021] [Accepted: 05/21/2021] [Indexed: 11/26/2022] Open
Abstract
Conformational and polymorphic states in the nitro-derivative of o-hydroxy acetophenone have been studied by experimental and theoretical methods. The potential energy curves for the rotation of the nitro group and isomerization of the hydroxyl group have been calculated by density functional theory (DFT) to estimate the barriers of the conformational changes. Two polymorphic forms of the studied compound were obtained by the slow and fast evaporation of polar and non-polar solutions, respectively. Both of the polymorphs were investigated by Infrared-Red (IR) and Raman spectroscopy, Incoherent Inelastic Neutron Scattering (IINS), X-ray diffraction, nuclear quadrupole resonance spectroscopy (NQR), differential scanning calorimetry (DSC) and density functional theory (DFT) methods. In one of the polymorphs, the existence of a phase transition was shown. The position of the nitro group and its impact on the crystal cell of the studied compound were analyzed. The conformational equilibrium determined by the reorientation of the hydroxyl group was observed under argon matrix isolation. An analysis of vibrational spectra was achieved for the interpretation of conformational equilibrium. The infrared spectra were measured in a wide temperature range to reveal the spectral bands that were the most sensitive to the phase transition and conformational equilibrium. The results showed the interrelations between intramolecular processes and macroscopic phenomena in the studied compound.
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Affiliation(s)
- Łukasz Hetmańczyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland;
| | - Przemysław Szklarz
- Faculty of Chemistry, Wrocław University, I14 F. Joliot-Curie st., 50-383 Wrocław, Poland; (P.S.); (A.K.); (M.W.); (M.P.-K.)
| | - Agnieszka Kwocz
- Faculty of Chemistry, Wrocław University, I14 F. Joliot-Curie st., 50-383 Wrocław, Poland; (P.S.); (A.K.); (M.W.); (M.P.-K.)
| | - Maria Wierzejewska
- Faculty of Chemistry, Wrocław University, I14 F. Joliot-Curie st., 50-383 Wrocław, Poland; (P.S.); (A.K.); (M.W.); (M.P.-K.)
| | - Magdalena Pagacz-Kostrzewa
- Faculty of Chemistry, Wrocław University, I14 F. Joliot-Curie st., 50-383 Wrocław, Poland; (P.S.); (A.K.); (M.W.); (M.P.-K.)
| | - Mikhail Ya. Melnikov
- Department of Chemistry, Moscow State University, F. Joliot-Curie 14, 119991 Moscow, Russia;
| | - Peter M. Tolstoy
- Institute of Chemistry, St. Petersburg State University, Universitetskij pr. 26, 198504 St. Petersburg, Russia;
| | - Aleksander Filarowski
- Faculty of Chemistry, Wrocław University, I14 F. Joliot-Curie st., 50-383 Wrocław, Poland; (P.S.); (A.K.); (M.W.); (M.P.-K.)
- Frank Laboratory of Neutron Physics, Joint Institute of Nuclear Research, 141980 Dubna, Russia
- Correspondence: ; Tel.: +48-71-3757283
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111
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D H, Bairy R, A J, Quah CK, Kwong HC, Patil PS. Structural, photoluminescence, physical, optical limiting, and hirshfeld surface analysis of polymorphic chlorophenyl organic chalcone derivative for optoelectronic applications. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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112
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Marinova V, Dodd L, Lee SJ, Wood GPF, Marziano I, Salvalaglio M. Identifying Conformational Isomers of Organic Molecules in Solution via Unsupervised Clustering. J Chem Inf Model 2021; 61:2263-2273. [PMID: 33913713 PMCID: PMC8278389 DOI: 10.1021/acs.jcim.0c01387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a systematic approach for the identification of statistically relevant conformational macrostates of organic molecules from molecular dynamics trajectories. The approach applies to molecules characterized by an arbitrary number of torsional degrees of freedom and enables the transferability of the macrostates definition across different environments. We formulate a dissimilarity measure between molecular configurations that incorporates information on the characteristic energetic cost associated with transitions along all relevant torsional degrees of freedom. Such metric is employed to perform unsupervised clustering of molecular configurations based on the Fast Search and Find of Density Peaks algorithm. We apply this method to investigate the equilibrium conformational ensemble of Sildenafil, a conformationally complex pharmaceutical compound, in different environments including the crystal bulk, the gas phase, and three different solvents (acetonitrile, 1-butanol, and toluene). We demonstrate that while Sildenafil can adopt more than 100 metastable conformational configurations, only 12 are significantly populated across all of the environments investigated. Despite the complexity of the conformational space, we find that the most abundant conformers in solution are the closest to the conformers found in the most common Sildenafil crystal phase.
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Affiliation(s)
- Veselina Marinova
- Thomas Young Centre and Department of Chemical Engineering, University College London, London WC1E 7JE, U.K.,Department of Materials Science and Engineering, The University of Sheffield, Sheffield S1 3JD, U.K
| | - Laurence Dodd
- Thomas Young Centre and Department of Chemical Engineering, University College London, London WC1E 7JE, U.K
| | - Song-Jun Lee
- Thomas Young Centre and Department of Chemical Engineering, University College London, London WC1E 7JE, U.K
| | - Geoffrey P F Wood
- Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Ivan Marziano
- Pfizer Worldwide Research and Development, Sandwich CT13 9NJ, Kent, U.K
| | - Matteo Salvalaglio
- Thomas Young Centre and Department of Chemical Engineering, University College London, London WC1E 7JE, U.K
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113
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Bowskill DH, Sugden IJ, Konstantinopoulos S, Adjiman CS, Pantelides CC. Crystal Structure Prediction Methods for Organic Molecules: State of the Art. Annu Rev Chem Biomol Eng 2021; 12:593-623. [PMID: 33770462 DOI: 10.1146/annurev-chembioeng-060718-030256] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The prediction of the crystal structures that a given organic molecule is likely to form is an important theoretical problem of significant interest for the pharmaceutical and agrochemical industries, among others. As evidenced by a series of six blind tests organized over the past 2 decades, methodologies for crystal structure prediction (CSP) have witnessed substantial progress and have now reached a stage of development where they can begin to be applied to systems of practical significance. This article reviews the state of the art in general-purpose methodologies for CSP, placing them within a common framework that highlights both their similarities and their differences. The review discusses specific areas that constitute the main focus of current research efforts toward improving the reliability and widening applicability of these methodologies, and offers some perspectives for the evolution of this technology over the next decade.
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Affiliation(s)
- David H Bowskill
- Molecular Systems Engineering Group, Centre for Process Systems Engineering, Department of Chemical Engineering, and Institute for Molecular Science and Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom;
| | - Isaac J Sugden
- Molecular Systems Engineering Group, Centre for Process Systems Engineering, Department of Chemical Engineering, and Institute for Molecular Science and Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom;
| | - Stefanos Konstantinopoulos
- Molecular Systems Engineering Group, Centre for Process Systems Engineering, Department of Chemical Engineering, and Institute for Molecular Science and Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom;
| | - Claire S Adjiman
- Molecular Systems Engineering Group, Centre for Process Systems Engineering, Department of Chemical Engineering, and Institute for Molecular Science and Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom;
| | - Constantinos C Pantelides
- Molecular Systems Engineering Group, Centre for Process Systems Engineering, Department of Chemical Engineering, and Institute for Molecular Science and Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom;
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114
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Maman MP, Nath A, Anjusree S, Das BC, Mandal S. Reversible polymorphic structural transition of crown-like nickel nanoclusters and its effect on conductivity. Chem Commun (Camb) 2021; 57:2935-2938. [PMID: 33621307 DOI: 10.1039/d1cc00402f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report the reversible polymorphic phase transition of [Ni6(PET)12] (PET = phenylethanethiol) and its effect on the conductivity. This cluster's self-assembly leads to two polymorphic structures with distinct conductivity, caused by variation of the non-covalent SS interactions. These results enlighten the effect of non-covalent interactions on conductivity.
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Affiliation(s)
- Manju P Maman
- School of Chemistry Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India.
| | - Akashdeep Nath
- School of Chemistry Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India.
| | - Anjusree S
- School of Physics Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
| | - Bikas C Das
- School of Physics Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
| | - Sukhendu Mandal
- School of Chemistry Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India.
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115
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Dotson JJ, Liepuoniute I, Bachman JL, Hipwell VM, Khan SI, Houk KN, Garg NK, Garcia-Garibay MA. Taming Radical Pairs in the Crystalline Solid State: Discovery and Total Synthesis of Psychotriadine. J Am Chem Soc 2021; 143:4043-4054. [PMID: 33682403 PMCID: PMC8292139 DOI: 10.1021/jacs.1c01100] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Solid-state photodecarbonylation is an attractive but underutilized methodology to forge hindered C-C bonds in complex molecules. This study discloses the use of this reaction to assemble the vicinal quaternary stereocenter motif present in bis(cyclotryptamine) alkaloids. Our strategy was enabled by experimental and computational investigations of the role of substrate conformation on the success or failure of the solid-state photodecarbonylation reaction. This informed a crystal engineering strategy to optimize the key step of the total synthesis. Ultimately, this endeavor culminated in the successful synthesis of the bis(cyclotryptamine) alkaloid "psychotriadine," which features the elusive piperidinoindoline framework. Psychotriadine, a previously unknown compound, was identified in the extracts of the flower Psychotria colorata, suggesting it is a naturally occurring metabolite.
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Affiliation(s)
- Jordan J Dotson
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Ieva Liepuoniute
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - J Logan Bachman
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Vince M Hipwell
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Saeed I Khan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Neil K Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Miguel A Garcia-Garibay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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116
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Hong RS, Mattei A, Sheikh AY, Bhardwaj RM, Bellucci MA, McDaniel KF, Pierce MO, Sun G, Li S, Wang L, Mondal S, Ji J, Borchardt TB. Novel Physics-Based Ensemble Modeling Approach That Utilizes 3D Molecular Conformation and Packing to Access Aqueous Thermodynamic Solubility: A Case Study of Orally Available Bromodomain and Extraterminal Domain Inhibitor Lead Optimization Series. J Chem Inf Model 2021; 61:1412-1426. [PMID: 33661005 DOI: 10.1021/acs.jcim.0c01410] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Drug design with patient centricity for ease of administration and pill burden requires robust understanding of the impact of chemical modifications on relevant physicochemical properties early in lead optimization. To this end, we have developed a physics-based ensemble approach to predict aqueous thermodynamic crystalline solubility, with a 2D chemical structure as the input. Predictions for the bromodomain and extraterminal domain (BET) inhibitor series show very close match (0.5 log unit) with measured thermodynamic solubility for cases with low crystal anisotropy and good match (1 log unit) for high anisotropy structures. The importance of thermodynamic solubility is clearly demonstrated by up to a 4 log unit drop in solubility compared to kinetic (amorphous) solubility in some cases and implications thereof, for instance on human dose. We have also demonstrated that incorporating predicted crystal structures in thermodynamic solubility prediction is necessary to differentiate (up to 4 log unit) between solubility of molecules within the series. Finally, our physics-based ensemble approach provides valuable structural insights into the origins of 3-D conformational landscapes, crystal polymorphism, and anisotropy that can be leveraged for both drug design and development.
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Affiliation(s)
- Richard S Hong
- Research & Development, AbbVie Inc., 1 N Waukegan Road, North Chicago, Illinois 60064, United States
| | - Alessandra Mattei
- Research & Development, AbbVie Inc., 1 N Waukegan Road, North Chicago, Illinois 60064, United States
| | - Ahmad Y Sheikh
- Research & Development, AbbVie Inc., 1 N Waukegan Road, North Chicago, Illinois 60064, United States
| | - Rajni Miglani Bhardwaj
- Research & Development, AbbVie Inc., 1 N Waukegan Road, North Chicago, Illinois 60064, United States
| | - Michael A Bellucci
- XtalPi, Inc., 245 Main Street, Cambridge, Massachusetts 02142, United States
| | - Keith F McDaniel
- Research & Development, AbbVie Inc., 1 N Waukegan Road, North Chicago, Illinois 60064, United States
| | - M Olivia Pierce
- Schrödinger Inc., 120 W 45th Street, New York, New York 10036, United States
| | - Guangxu Sun
- XtalPi, Inc., 245 Main Street, Cambridge, Massachusetts 02142, United States
| | - Sizhu Li
- XtalPi, Inc., 245 Main Street, Cambridge, Massachusetts 02142, United States
| | - Lingle Wang
- Schrödinger Inc., 120 W 45th Street, New York, New York 10036, United States
| | - Sayan Mondal
- Schrödinger Inc., 120 W 45th Street, New York, New York 10036, United States
| | - Jianguo Ji
- Research & Development, AbbVie Inc., 1 N Waukegan Road, North Chicago, Illinois 60064, United States
| | - Thomas B Borchardt
- Research & Development, AbbVie Inc., 1 N Waukegan Road, North Chicago, Illinois 60064, United States
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117
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Derdour L. A Pathway to First Crystals for Substances Prone to Liquid‐Liquid Phase Separation. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202000274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Lotfi Derdour
- GlaxoSmithKline Material Sciences, Chemical Development 1250 S. Collegeville Road 19426 Collegeville PA USA
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118
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Zhang C, Guo Y, He D, Komiya J, Watanabe G, Ogaki T, Wang C, Nihonyanagi A, Inuzuka H, Gong H, Yi Y, Takimiya K, Hashizume D, Miyajima D. A Design Principle for Polar Assemblies with C 3 -Sym Bowl-Shaped π-Conjugated Molecules. Angew Chem Int Ed Engl 2021; 60:3261-3267. [PMID: 33098203 DOI: 10.1002/anie.202013333] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Indexed: 11/08/2022]
Abstract
Polar materials attract wide research interest due to their unique properties, such as ferroelectricity and the bulk photovoltaic effect (BPVE), which are not accessible with nonpolar materials. However, in general, rationally designing polar materials is difficult because nonpolar materials are more favorable in terms of dipole-dipole interactions. Here, we report a rational strategy to form polar assemblies with bowl-shaped π-conjugated molecules and a molecular design principle for this strategy. We synthesized and thoroughly characterized 12 single crystals with the help of various theoretical calculations. Furthermore, we demonstrated that it can be possible to predict whether polar assemblies become more favorable or not by estimating their lattice energies. We believe that this study contributes to the development of organic polar materials and their related studies.
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Affiliation(s)
- Cheng Zhang
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Yuan Guo
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Light Industry and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China
| | - Dan He
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Jouji Komiya
- Department of Physics, School of Science, Kitasato University, 1-15-1, Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Go Watanabe
- Department of Physics, School of Science, Kitasato University, 1-15-1, Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Takuya Ogaki
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Chengyuan Wang
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Atsuko Nihonyanagi
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Hiroyuki Inuzuka
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Hao Gong
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.,Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Yuanping Yi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kazuo Takimiya
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.,Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Daigo Miyajima
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
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119
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120
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Kusukawa T, Kannen F, Kojima Y, Yoza K. Crystal Polymorphism-dependent Fluorescence of Fluoroarene-substituted Anthracene Derivatives. CHEM LETT 2021. [DOI: 10.1246/cl.200628] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Takahiro Kusukawa
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Fumihiro Kannen
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Yusuke Kojima
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kenji Yoza
- Bruker Japan K.K., 3-9 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa 221-0022, Japan
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121
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Feiler T, Bhattacharya B, Michalchuk AAL, Rhim SY, Schröder V, List-Kratochvil E, Emmerling F. Tuning the mechanical flexibility of organic molecular crystals by polymorphism for flexible optical waveguides. CrystEngComm 2021. [DOI: 10.1039/d1ce00642h] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The ability to selectively tune the optical and the mechanical properties of organic molecular crystals offers a promising approach towards developing flexible optical devices.
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Affiliation(s)
- Torvid Feiler
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, 12489 Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Biswajit Bhattacharya
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, 12489 Berlin, Germany
| | - Adam A. L. Michalchuk
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, 12489 Berlin, Germany
| | - Seon-Young Rhim
- Department of Chemistry, Department of Physics, Humboldt-Universität zu Berlin, IRIS Adlershof, Zum Großen Windkanal 2, 12489 Berlin, Germany
| | - Vincent Schröder
- Department of Chemistry, Department of Physics, Humboldt-Universität zu Berlin, IRIS Adlershof, Zum Großen Windkanal 2, 12489 Berlin, Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Emil List-Kratochvil
- Department of Chemistry, Department of Physics, Humboldt-Universität zu Berlin, IRIS Adlershof, Zum Großen Windkanal 2, 12489 Berlin, Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Franziska Emmerling
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, 12489 Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
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122
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Wang K, Wang C, Mishra MK, Young VG, Sun CC. Reversible facile single-crystal-to-single-crystal polymorphic transition accompanied by unit cell volume expansion and twinning. CrystEngComm 2021. [DOI: 10.1039/d1ce00055a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Reversible and facile single-crystal-to-single-crystal transformation between two polymorphs of diphenhydramine citrate leads to molecular level understanding of crystal phase change.
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Affiliation(s)
- Kunlin Wang
- Pharmaceutical Materials Science and Engineering Laboratory
- Department of Pharmaceutics
- College of Pharmacy
- University of Minnesota
- Minneapolis
| | - Chenguang Wang
- Pharmaceutical Materials Science and Engineering Laboratory
- Department of Pharmaceutics
- College of Pharmacy
- University of Minnesota
- Minneapolis
| | - Manish Kumar Mishra
- Pharmaceutical Materials Science and Engineering Laboratory
- Department of Pharmaceutics
- College of Pharmacy
- University of Minnesota
- Minneapolis
| | - Victor G. Young
- Department of Chemistry
- College of Science and Engineering
- University of Minnesota
- Minneapolis
- USA
| | - Changquan Calvin Sun
- Pharmaceutical Materials Science and Engineering Laboratory
- Department of Pharmaceutics
- College of Pharmacy
- University of Minnesota
- Minneapolis
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123
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Serezhkin VN, Savchenkov AV. Advancing the use of Voronoi–Dirichlet polyhedra to describe interactions in organic molecular crystal structures by the example of galunisertib polymorphs. CrystEngComm 2021. [DOI: 10.1039/d0ce01535k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The universal approach for studying structure/properties relationships shows that every polymorph of galunisertib is characterized with unique noncovalent interactions.
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124
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Zia M, Hameed S, Frontera A, Irran E, Naseer MM. Understanding the planar conformations in diarylsubstituted heteroarenes: structural and theoretical insights. CrystEngComm 2021. [DOI: 10.1039/d1ce00354b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have synthesized and X-ray characterized a series of six diaryl-substituted heteroarenes in order to analyze unconventional intramolecular CAr–H⋯N/O in comparison to conventional H-bonds.
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Affiliation(s)
- Mehwash Zia
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad-45320
- Pakistan
- Department of Chemistry
| | - Shahid Hameed
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad-45320
- Pakistan
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma de Mallorca
- Spain
| | - Elisabeth Irran
- Fakultät II Institut für Chemie
- Technische Universität
- Berlin-10623
- Germany
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125
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Mirzaei S, Lindeman SV, Wang D, Mirzaei MS, Timerghazin QK. Conformational switch in the crystal states of a calix[4]arene. CrystEngComm 2021. [DOI: 10.1039/d0ce01704c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two distinct conformational switches were observed in the crystals of calix[4]arene molecule: closed-I crystals transform to the open polymorph spontaneously; temperature induced reversible transformation of closed-I to a closed-II polymorph.
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Affiliation(s)
- Saber Mirzaei
- Department of Chemistry
- Marquette University
- Milwaukee
- USA
- Department of Chemistry
| | | | - Denan Wang
- Department of Chemistry
- Marquette University
- Milwaukee
- USA
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126
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Shishkina SV, Konovalova IS, Kovalenko SS, Nikolaeva LL, Bunyatyan ND, Kovalenko SM. Conformational polymorphs of 3-cyclopropyl-5-(3-methyl-[1,2,4]triazolo[4,3-a]pyridin-7-yl)-1,2,4-oxadiazole. Acta Crystallogr C Struct Chem 2021; 77:20-28. [PMID: 33397821 DOI: 10.1107/s2053229620015508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/23/2020] [Indexed: 11/11/2022] Open
Abstract
The dipharmacophore compound 3-cyclopropyl-5-(3-methyl-[1,2,4]triazolo[4,3-a]pyridin-7-yl)-1,2,4-oxadiazole, C12H11N5O, was studied on the assumption of its potential biological activity. Two polymorphic forms differ in both their molecular and crystal structures. The monoclinic polymorphic form was crystallized from more volatile solvents and contains a conformer with a higher relative energy. The basic molecule forms an abundance of interactions with relatively close energies. The orthorhombic polymorph was crystallized very slowly from isoamyl alcohol and contains a conformer with a much lower energy. The basic molecule forms two strong interactions and a large number of weak interactions. Stacking interactions of the `head-to-head' type in the monoclinic structure and of the `head-to-tail' type in the orthorhombic structure proved to be the strongest and form stacked columns in the two polymorphs. The main structural motif of the monoclinic structure is a double column where two stacked columns interact through weak C-H...N hydrogen bonds and dispersive interactions. In the orthorhombic structure, a single stacked column is the main structural motif. Periodic calculations confirmed that the orthorhombic structure obtained by slow evaporation has a lower lattice energy (0.97 kcal mol-1) compared to the monoclinic structure.
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Affiliation(s)
- Svitlana V Shishkina
- SSI `Institute for Single Crystals' NAS of Ukraine, 60 Nauky ave., Kharkiv 61001, Ukraine
| | - Irina S Konovalova
- SSI `Institute for Single Crystals' NAS of Ukraine, 60 Nauky ave., Kharkiv 61001, Ukraine
| | | | - Lyudmila L Nikolaeva
- Federal State Autonomous Educational Institution of Higher Education, I.M. Sechenov First Moscow State Medical University, 8 Trubeckaya, Moscow 119991, Russian Federation
| | - Natalya D Bunyatyan
- Federal State Autonomous Educational Institution of Higher Education, I.M. Sechenov First Moscow State Medical University, 8 Trubeckaya, Moscow 119991, Russian Federation
| | - Sergiy M Kovalenko
- V.N. Karazin Kharkiv National University, 4 Svobody sq., Kharkiv 61077, Ukraine
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127
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Lewis-Atwell T, Townsend PA, Grayson MN. Comparisons of different force fields in conformational analysis and searching of organic molecules: A review. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131865] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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128
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Serezhkin VN, Savchenkov AV. Features of the conformation of galunisertib molecules in the crystal structures of its solvates. CrystEngComm 2021. [DOI: 10.1039/d1ce01300a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comparison of galunisertib in crystal structures of pure polymorphs and solvates enables studying the effects of solvate molecules on galunisertib conformations and highlights the features of realized noncovalent interactions.
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129
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Yang P, Jin J, Wen Q, Lin C, Fu J, Zhuang W, Wu J, Liu D, Zhu C, Ying H. Hydrates of adenosine 3′,5′-cyclic monophosphate sodium and their transformation. CrystEngComm 2021. [DOI: 10.1039/d0ce01180k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The difference of crystal water behaviors for cAMPNa hydrates was attributed mainly to the steric effects in lattices. Excessive loss of crystal water would destroy the host structure, and result in the disability of reversible transformation.
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130
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Alekseev ES, Alentiev AY, Belova AS, Bogdan VI, Bogdan TV, Bystrova AV, Gafarova ER, Golubeva EN, Grebenik EA, Gromov OI, Davankov VA, Zlotin SG, Kiselev MG, Koklin AE, Kononevich YN, Lazhko AE, Lunin VV, Lyubimov SE, Martyanov ON, Mishanin II, Muzafarov AM, Nesterov NS, Nikolaev AY, Oparin RD, Parenago OO, Parenago OP, Pokusaeva YA, Ronova IA, Solovieva AB, Temnikov MN, Timashev PS, Turova OV, Filatova EV, Philippov AA, Chibiryaev AM, Shalygin AS. Supercritical fluids in chemistry. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4932] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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131
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Woodley SM, Day GM, Catlow R. Structure prediction of crystals, surfaces and nanoparticles. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2020; 378:20190600. [PMID: 33100162 DOI: 10.1098/rsta.2019.0600] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We review the current techniques used in the prediction of crystal structures and their surfaces and of the structures of nanoparticles. The main classes of search algorithm and energy function are summarized, and we discuss the growing role of methods based on machine learning. We illustrate the current status of the field with examples taken from metallic, inorganic and organic systems. This article is part of a discussion meeting issue 'Dynamic in situ microscopy relating structure and function'.
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Affiliation(s)
- Scott M Woodley
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - Graeme M Day
- Computational Systems Chemistry, School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK
| | - R Catlow
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
- School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, UK
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132
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Zhang C, Guo Y, He D, Komiya J, Watanabe G, Ogaki T, Wang C, Nihonyanagi A, Inuzuka H, Gong H, Yi Y, Takimiya K, Hashizume D, Miyajima D. A Design Principle for Polar Assemblies with C
3
‐Sym Bowl‐Shaped π‐Conjugated Molecules. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Cheng Zhang
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Yuan Guo
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Light Industry and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 China
| | - Dan He
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Jouji Komiya
- Department of Physics School of Science Kitasato University 1-15-1, Kitasato, Minami-ku Sagamihara Kanagawa 252-0373 Japan
| | - Go Watanabe
- Department of Physics School of Science Kitasato University 1-15-1, Kitasato, Minami-ku Sagamihara Kanagawa 252-0373 Japan
| | - Takuya Ogaki
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Chengyuan Wang
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Atsuko Nihonyanagi
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Hiroyuki Inuzuka
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Hao Gong
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Department of Chemistry and Biotechnology School of Engineering The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
| | - Yuanping Yi
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Kazuo Takimiya
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Department of Chemistry Graduate School of Science Tohoku University Aoba-ku Sendai, Miyagi 980-8578 Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Daigo Miyajima
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
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133
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Guillén M, Mora AJ, Belandria LM, Seijas LE, Ramírez JW, Burgos JL, Rincón L, Delgado GE. Two conformational polymorphs of 4-methylhippuric acid. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2020; 76:1077-1091. [PMID: 33289719 DOI: 10.1107/s2052520620013773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 10/14/2020] [Indexed: 06/12/2023]
Abstract
4-Methylhippuric acid {systematic name: 2-[(4-methylbenzoyl)amino]ethanoic acid}, a p-xylene excreted metabolite with a backbone containing three rotatable bonds (R-bonds), is likely to produce more than one stable molecular structure in the solid state. In this work, we prepared polymorph I by slow solvent evaporation (plates with Z' = 1) and polymorph II by mechanical grinding (plates with Z' = 2). Potential energy surface (PES) analysis, rotating the molecule about the C-C-N-C torsion angle, shows four conformational energy basins. The second basin, with torsion angles near -73°, agree with the conformations adopted by polymorph I and molecules A of polymorph II, and the third basin at 57° matched molecules B of polymorph II. The energy barrier between these basins is 27.5 kJ mol-1. Superposition of the molecules of polymorphs I and II rendered a maximum r.m.s. deviation of 0.398 Å. Polymorphs I and II are therefore true conformational polymorphs. The crystal packing of polymorph I consists of C(5) chains linked by N-H...O interactions along the a axis and C(7) chains linked by O-H...O interactions along the b axis. In polymorph II, two molecules (A with A or B with B) are connected by two acid-amide O-H...O interactions rendering R22(14) centrosymmetric dimers. These dimers alternate to pile up along the b axis linked by N-H...O interactions. A Hirshfeld surface analysis localized weaker noncovalent interactions, C-H...O and C-H...π, with contact distances close to the sum of the van der Waals radii. Electron density at a local level using the Quantum Theory of Atoms in Molecules (QTAIM) and the Electron Localization Function (ELF), or a semi-local level using noncovalent interactions, was used to rank interactions. Strong closed shell interactions in classical O-H...O and N-H...O hydrogen bonds have electron density highly localized on bond critical points. Weaker delocalized electron density is seen around the p-methylphenyl rings associated with dispersive C-H...π and H...H interactions.
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Affiliation(s)
- Marilia Guillén
- Laboratorio de Cristalografía, Departamento de Química. Facultad de Ciencias, Universidad de Los Andes, Mérida, 5101, Venezuela
| | - Asiloé J Mora
- Laboratorio de Cristalografía, Departamento de Química. Facultad de Ciencias, Universidad de Los Andes, Mérida, 5101, Venezuela
| | - Lusbely M Belandria
- Laboratorio de Cristalografía, Departamento de Química. Facultad de Ciencias, Universidad de Los Andes, Mérida, 5101, Venezuela
| | - Luis E Seijas
- Laboratorio de Procesos Dinámicos, Departamento de Química, Facultad de Ciencias, Universidad de Los Andes, Mérida, 5101, Venezuela
| | - Jeans W Ramírez
- Laboratorio de Cristalografía, Departamento de Química. Facultad de Ciencias, Universidad de Los Andes, Mérida, 5101, Venezuela
| | - José L Burgos
- Grupo de Investigaciones en Física, Escuela de Física y Matemática, Facultad de Ciencias, Escuela Superior Politécnica de Chimborazo, Riobamba, EC060155, Ecuador
| | - Luis Rincón
- Grupo de Química Computacional y Teórica, Departamento de Ingeniería Química, Universidad San Francisco de Quito, Quito, 17-1200-841, Ecuador
| | - Gerzon E Delgado
- Laboratorio de Cristalografía, Departamento de Química. Facultad de Ciencias, Universidad de Los Andes, Mérida, 5101, Venezuela
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134
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Davis MP, Mohara M, Shimura K, Korter TM. Simulation and Assignment of the Terahertz Vibrational Spectra of Enalapril Maleate Cocrystal Polymorphs. J Phys Chem A 2020; 124:9793-9800. [PMID: 33185098 DOI: 10.1021/acs.jpca.0c08093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The identification of crystalline drug polymorphs using terahertz vibrational spectroscopy is a powerful approach for the nondestructive and noninvasive characterization of solid-state pharmaceuticals. However, a complete understanding of the terahertz spectra of molecular solids is challenging to obtain because of the complex nature of the low-frequency vibrational motions found in the sub-3 THz (sub-100 cm-1) range. Unambiguous assignments of the observed spectral features can be achieved through quantum mechanical solid-state simulations of crystal structures and lattice vibrations utilizing the periodic boundary condition approach. The terahertz spectra of two polymorphs of enalapril maleate are presented here to demonstrate that even large pharmaceuticals can be successfully modeled using solid-state density functional theory, including cocrystalline solids comprised of multiple distinct species. These simulations enable spectral assignments to be made, but also provide insights into the conformational and cohesion energies that contribute to the polymorph stabilities. The results reveal that the Form II polymorph of enalapril maleate is the more stable of the two under ambient conditions, and that this stability is driven by a greater intermolecular cohesion energy as compared to Form I.
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Affiliation(s)
- Margaret P Davis
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Mizuki Mohara
- Hitachi High-Tech Corp., Ichige, Hitachinaka 312-8504, Japan
| | - Kei Shimura
- Hitachi High-Tech Corp., Ichige, Hitachinaka 312-8504, Japan
| | - Timothy M Korter
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, United States
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135
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Wang J, Yang S, Zou Q, Wang H, Li H. X-ray structure of an unusual glycoluril derivative conformation: Structural analysis and influencing factors. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820961019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The synthesis and X-ray structure of a novel glycoluril derivative are described. The crystal of the glycoluril derivative is obtained by slow evaporation in a refrigerator at about 5 °C. X-ray crystallographic analysis revealed that the compound crystallized in an unusual as conformation instead of the usual clip-shaped aa conformation. Structural analysis shows that the solvation effect, hydrogen bonding, and space-occupying effect influenced the crystallization conformation of the derivative. The X-ray crystallographic analysis in this work provides additional crystallographic evidence of the as conformation of the 3U glycoluril derivative and shows the effect of solvent water on the conformational behavior.
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Affiliation(s)
- Jungang Wang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, P.R. China
| | - Shanghui Yang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, P.R. China
| | - Qiling Zou
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, P.R. China
| | - Huanjiang Wang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, P.R. China
| | - Hongqing Li
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, P.R. China
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136
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Tang SK, Davey RJ, Sacchi P, Cruz-Cabeza AJ. Can molecular flexibility control crystallization? The case of para substituted benzoic acids. Chem Sci 2020; 12:993-1000. [PMID: 34163865 PMCID: PMC8179050 DOI: 10.1039/d0sc05424k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Despite the technological importance of crystallization from solutions almost nothing is known about the relationship between the kinetic process of nucleation and the molecular and crystal structures of a crystallizing solute. Nowhere is this more apparent than in our attempts to understand the behavior of increasingly large, flexible molecules developed as active components in the pharmaceutical arena. In our current contribution we develop a general protocol involving a combination of computation (conformation analysis, lattice energy), and experiment (measurement of nucleation rates), and show how significant advances can be made. We present the first systematic study aimed at quantifying the impact of molecular flexibility on nucleation kinetics. The nucleation rates of 4 para substituted benzoic acids are compared, two of which have substituents with flexible chains. In making this comparison, the importance of normalizing data to account for differing solubilities is highlighted. These data have allowed us to go beyond popular qualitative descriptors such ‘crystallizability’ or ‘crystallization propensity’ in favour of more precise nucleation rate data. Overall, this leads to definite conclusions as to the relative importance of solution chemistry, solid-state interactions and conformational flexibility in the crystallization of these molecules and confirms the key role of intermolecular stacking interactions in determining relative nucleation rates. In a more general sense, conclusions are drawn as to conditions under which conformational change may become rate determining during a crystallization process. Little is known about the relationship between the kinetic process of nucleation and the molecular and crystal structures of a crystallizing solute. Here we compare the behaviour of a series of benzoic acids with a focus on conformational effects.![]()
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Affiliation(s)
- Sin Kim Tang
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester M13PL UK
| | - Roger J Davey
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester M13PL UK
| | - Pietro Sacchi
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester M13PL UK
| | - Aurora J Cruz-Cabeza
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester M13PL UK
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137
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Li X, Ou X, Wang B, Rong H, Wang B, Chang C, Shi B, Yu L, Lu M. Rich polymorphism in nicotinamide revealed by melt crystallization and crystal structure prediction. Commun Chem 2020; 3:152. [PMID: 36703331 PMCID: PMC9814109 DOI: 10.1038/s42004-020-00401-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/09/2020] [Indexed: 01/29/2023] Open
Abstract
Overprediction is a major limitation of current crystal structure prediction (CSP) methods. It is difficult to determine whether computer-predicted polymorphic structures are artefacts of the calculation model or are polymorphs that have not yet been found. Here, we reported the well-known vitamin nicotinamide (NIC) to be a highly polymorphic compound with nine solved single-crystal structures determined by performing melt crystallization. A CSP calculation successfully identifies all six Z' = 1 and 2 experimental structures, five of which defy 66 years of attempts at being explored using solution crystallization. Our study demonstrates that when combined with our strategy for cultivating single crystals from melt microdroplets, melt crystallization has turned out to be an efficient tool for exploring polymorphic landscapes to better understand polymorphic crystallization and to more effectively test the accuracy of theoretical predictions, especially in regions inaccessible by solution crystallization.
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Affiliation(s)
- Xizhen Li
- grid.12981.330000 0001 2360 039XSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiao Ou
- grid.12981.330000 0001 2360 039XSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Bingquan Wang
- grid.12981.330000 0001 2360 039XSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Haowei Rong
- grid.12981.330000 0001 2360 039XSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Bing Wang
- Shenzhen Jingtai Technology Co., Ltd. (XtalPi Inc.), Shenzhen, China
| | - Chao Chang
- Shenzhen Jingtai Technology Co., Ltd. (XtalPi Inc.), Shenzhen, China
| | - Baimei Shi
- Shenzhen Jingtai Technology Co., Ltd. (XtalPi Inc.), Shenzhen, China
| | - Lian Yu
- grid.14003.360000 0001 2167 3675School of Pharmacy, University of Wisconsin – Madison, Madison, WI USA
| | - Ming Lu
- grid.12981.330000 0001 2360 039XSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XGuangdong Provincial Key Laboratory of New Drug Design and Evaluation, Sun Yat-sen University, Guangzhou, China
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138
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139
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Sahoo PR, Kumar A, Kumar A, Kumar S. Experimental and computational investigation of polymorphism in methyl 3-hydroxy-4-(piperidin-1-ylmethyl)-2-naphthoate. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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140
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Blade H, Blundell CD, Brown SP, Carson J, Dannatt HRW, Hughes LP, Menakath AK. Conformations in Solution and in Solid-State Polymorphs: Correlating Experimental and Calculated Nuclear Magnetic Resonance Chemical Shifts for Tolfenamic Acid. J Phys Chem A 2020; 124:8959-8977. [DOI: 10.1021/acs.jpca.0c07000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Helen Blade
- Oral Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, U.K
| | | | - Steven P. Brown
- Department of Physics, University of Warwick, Coventry CV4 7AL, U.K
| | - Jake Carson
- Department of Statistics, University of Warwick, Coventry CV4 7AL, U.K
| | | | - Leslie P. Hughes
- Oral Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, U.K
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141
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Cruz-Cabeza AJ, Feeder N, Davey RJ. Open questions in organic crystal polymorphism. Commun Chem 2020; 3:142. [PMID: 36703394 PMCID: PMC9814471 DOI: 10.1038/s42004-020-00388-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 09/25/2020] [Indexed: 01/29/2023] Open
Affiliation(s)
- Aurora J. Cruz-Cabeza
- grid.5379.80000000121662407Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester, M13 9PL UK
| | - Neil Feeder
- Neil Feeder Consulting Ltd., 9 Betony Vale, Royston, Hertfordshire SG8 9TS UK
| | - Roger J. Davey
- grid.5379.80000000121662407Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester, M13 9PL UK
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142
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Kuroda Y, Tamaru M, Nakasato H, Nakamura K, Nakata M, Hisano K, Fujisawa K, Tsutsumi O. Observation of crystallisation dynamics by crystal-structure-sensitive room-temperature phosphorescence from Au(I) complexes. Commun Chem 2020; 3:139. [PMID: 36703373 PMCID: PMC9814381 DOI: 10.1038/s42004-020-00382-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 09/16/2020] [Indexed: 01/29/2023] Open
Abstract
The aggregation behaviour of Au(I) complexes in condensed phases can affect their emission properties. Herein, aggregation-induced room-temperature phosphorescence (RTP) is observed from the crystals of trinuclear Au(I) complexes. The RTP is highly sensitive to the crystal structure, with a slight difference in the alkyl side chains causing not only a change in the crystal structure but also a shift in the RTP maximum. Furthermore, in nanocrystals, reversible RTP colour changes are induced by phase transitions between crystal polymorphs during crystal growth from solution or the pulverisation of bulk crystals. The colour change mechanism is discussed in terms of intermolecular interactions in the crystal structure of the luminescent aggregates. The results suggest that the behaviour in nanocrystals may differ from that in bulk crystals. These insights will advance the fundamental understanding of crystallisation mechanisms and may aid in the discovery of new materials properties for solids with nano- to micrometre sizes.
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Affiliation(s)
- Yuki Kuroda
- grid.262576.20000 0000 8863 9909Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577 Japan
| | - Masakazu Tamaru
- grid.262576.20000 0000 8863 9909Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577 Japan
| | - Hitoya Nakasato
- grid.262576.20000 0000 8863 9909Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577 Japan
| | - Kyosuke Nakamura
- grid.262576.20000 0000 8863 9909Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577 Japan
| | - Manami Nakata
- grid.262576.20000 0000 8863 9909Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577 Japan
| | - Kyohei Hisano
- grid.262576.20000 0000 8863 9909Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577 Japan
| | - Kaori Fujisawa
- grid.262576.20000 0000 8863 9909Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577 Japan
| | - Osamu Tsutsumi
- grid.262576.20000 0000 8863 9909Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577 Japan
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143
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Pan G, Leng J, Shang Z, Deng L. The affection of ethylenediamine to Mo-based complex crystals quantum motifs. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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144
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Udvarhelyi A, Rodde S, Wilcken R. ReSCoSS: a flexible quantum chemistry workflow identifying relevant solution conformers of drug-like molecules. J Comput Aided Mol Des 2020; 35:399-415. [PMID: 32803515 DOI: 10.1007/s10822-020-00337-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 08/12/2020] [Indexed: 12/20/2022]
Abstract
Conformational equilibria are at the heart of drug design, yet their energetic description is often hampered by the insufficient accuracy of low-cost methods. Here we present a flexible and semi-automatic workflow based on quantum chemistry, ReSCoSS, designed to identify relevant conformers and predict their equilibria across different solvent environments in the Conductor-like Screening Model for Real Solvents (COSMO-RS) framework. We demonstrate the utility and accuracy of the workflow through conformational case studies on several drug-like molecules from literature where relevant conformations are known. We further show that including ReSCoSS conformers significantly improves COSMO-RS based predictions of physicochemical properties over single-conformation approaches. ReSCoSS has found broad adoption in the in-house drug discovery and development work streams and has contributed to establishing quantum-chemistry methods as a strategic pillar in ligand discovery.
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Affiliation(s)
- Anikó Udvarhelyi
- Technical Research and Development, Novartis Pharma AG, 4002, Basel, Switzerland.
| | - Stephane Rodde
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Rainer Wilcken
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland.
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145
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Drebushchak TN, Mikhailovskaya AV, Drebushchak VA, Mikhailenko MA, Myz’ SA, Shakhtshneider TP, Kuznetsova SA. CRYSTALLINE FORMS OF BETULIN:
POLYMORPHISM OR PSEUDOPOLYMORPHISM? J STRUCT CHEM+ 2020. [DOI: 10.1134/s0022476620080119] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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146
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Shishkina SV, Konovalova IS, Karpina VR, Kovalenko SS, Kovalenko SM, Bunyatyan ND. Concomitant polymorphic forms of 3-cyclopropyl-5-(2-hydrazinylpyridin-3-yl)-1,2,4-oxadiazole. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2020; 76:836-844. [DOI: 10.1107/s2053229620010414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 07/28/2020] [Indexed: 11/10/2022]
Abstract
The dipharmacophore compound 3-cyclopropyl-5-(2-hydrazinylpyridin-3-yl)-1,2,4-oxadiazole, C10H11N5O, was studied on the assumption of its potential biological activity. Two concomitant polymorphs were obtained on crystallization from isopropanol solution and these were thoroughly studied. Identical conformations of the molecules are found in both structures despite the low difference in energy between the four possible conformers. The two polymorphs differ crucially with respect to their crystal structures. A centrosymmetric dimer formed due to both stacking interactions of the `head-to-tail' type and N—H...N(π) hydrogen bonds is the building unit in the triclinic structure. The dimeric building units form an isotropic packing. In the orthorhombic polymorphic structure, the molecules form stacking interactions of the `head-to-head' type, which results in their organization in a column as the primary basic structural motif. The formation of N—H...N(lone pair) hydrogen bonds between two neighbouring columns allows the formation of a double column as the main structural motif. The correct packing motifs in the two polymorphs could not be identified without calculations of the pairwise interaction energies. The triclinic structure has a higher density and a lower (by 0.60 kcal mol−1) lattice energy according to periodic calculations compared to the orthorhombic structure. This allows us to presume that the triclinic form of 3-cyclopropyl-5-(2-hydrazinylpyridin-3-yl)-1,2,4-oxadiazole is the more stable.
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147
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Encapsulated Nanodroplet Crystallization of Organic-Soluble Small Molecules. Chem 2020; 6:1755-1765. [PMID: 32685768 PMCID: PMC7357602 DOI: 10.1016/j.chempr.2020.04.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/05/2020] [Accepted: 04/15/2020] [Indexed: 11/24/2022]
Abstract
Single-crystal X-ray diffraction analysis (SCXRD) constitutes a universal approach for the elucidation of molecular structure and the study of crystalline forms. However, the discovery of viable crystallization conditions remains both experimentally challenging and resource intensive in both time and the quantity of analyte(s). We report a robot-assisted, high-throughput method for the crystallization of organic-soluble small molecules in which we employ only micrograms of analyte per experiment. This allows hundreds of crystallization conditions to be screened in parallel with minimal overall sample requirements. Crystals suitable for SCXRD are grown from nanoliter droplets of a solution of analyte in organic solvent(s), each of which is encapsulated within an inert oil to control the rate of solvent loss. This encapsulated nanodroplet crystallization methodology can also be used to search for new crystal forms, as exemplified through both our discovery of a new (13th) polymorph of the olanzapine precursor ROY and SCXRD analysis of the “uncrystallizable” agrochemical dithianon. Single crystals of small molecules are grown from nanoscale droplets of organic solvent Discovery of the 13th polymorph (R18) of olanzapine precursor ROY X-ray diffraction analysis of “uncrystallizable” agrochemical dithianon
Small molecules can form crystalline solids, in which individual molecules pack together into ordered three-dimensional arrays. Once a suitable crystal is grown, the packing and atomic connectivity of the constituent molecules can be studied by X-ray diffraction. However, the discovery of experimental conditions for successful crystal growth is often challenging. We have developed a nanoscale crystallization technique for organic-soluble small molecules by using high-throughput liquid-handling robotics to undertake multiple crystallization experiments simultaneously with minimal sample requirements and high success rates. We showcase our methodology through the crystallization of a diverse set of small molecules, including “uncrystallizables,” combined with structural analysis by X-ray diffraction. We anticipate that this rapid and reliable method for small-molecule crystallization will have far-reaching impact, facilitating academic and industrial research in the molecular sciences.
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148
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Detection of hydroxyaromatics in a superior manner by a water soluble fluorescent iron-complex. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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149
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Li X, Wang N, Yang J, Huang Y, Ji X, Huang X, Wang T, Wang H, Hao H. Molecular conformational evolution mechanism during nucleation of crystals in solution. IUCRJ 2020; 7:542-556. [PMID: 32431837 PMCID: PMC7201291 DOI: 10.1107/s2052252520004959] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/07/2020] [Indexed: 05/24/2023]
Abstract
Nucleation of crystals from solution is fundamental to many natural and industrial processes. In this work, the molecular mechanism of conformational polymorphism nucleation and the links between the molecular conformation in solutions and in crystals were investigated in detail by using 5-nitro-furazone as the model compound. Different polymorphs were prepared, and the conformations in solutions obtained by dissolving different polymorphs were analysed and compared. The solutions of 5-nitro-furazone were proven to contain multiple conformers through quantum chemical computation, Raman spectra analysis, 2D nuclear Overhauser effect spectroscopy spectra analysis and molecular dynamics simulation. The conformational evolution and desolvation path was illustrated according to the 1H NMR spectra of solutions with different concentrations. Finally, based on all the above analysis, the molecular conformational evolution path during nucleation of 5-nitro-furazone was illustrated. The results presented in this work shed a new light on the molecular mechanism of conformational polymorphism nucleation in solution.
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Affiliation(s)
- Xin Li
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Na Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Jinyue Yang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Yunhai Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Xiongtao Ji
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Xin Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Ting Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Honghai Wang
- School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, People’s Republic of China
| | - Hongxun Hao
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, People’s Republic of China
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Shi P, Xu S, Ma Y, Tang W, Zhang F, Wang J, Gong J. Probing the structural pathway of conformational polymorph nucleation by comparing a series of α,ω-alkanedicarboxylic acids. IUCRJ 2020; 7:422-433. [PMID: 32431826 PMCID: PMC7201272 DOI: 10.1107/s205225252000233x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 02/19/2020] [Indexed: 06/11/2023]
Abstract
Herein the nucleation pathway of conformational polymorphs was revealed by studying the relationships and distinctions among a series of α,ω-alkanedicarboxylic acids [HOOC-(CH2) n-2-COOH, named DAn, where n = 5, 7, 9, 11, 13, 15] in the solid state and in solution. Their polymorphic outcomes, with the exception of DA5, show solvent dependence: form I with conformation I crystallizes from solvents with hydrogen-bond donating (HBD) ability, whereas form II with conformation II crystallizes preferentially from solvents with no HBD ability. In contrast, form II of DA5 does not crystallize in any of the solvents used. Quantum mechanical computation showed that there is no direct conformational link between the solvents and the resultant polymorphic outcomes. Surprisingly, solute aggregates were found in no-HBD solvents by Fourier transform infrared spectroscopy, and only monomers could be detected in HBD solvents, suggesting stronger solvation. Furthermore, it was found that all six compounds including DA5 followed the same pattern in solution. Moreover, crystal-packing efficiency calculations and stability tests stated that dimorphs of DA5 bear a greater stability difference than others. These suggest that the rearrangement from conformation II to I could not be limited by hard desolvation in HBD solvents, where form I was also obtained. In other systems, metastable II was produced in the same solvents, probably as a result of the rearrangement being limited by hard desolvation. In this work, a comparative study uncovers the proposed nucleation pathway: difficulty in desolvation has a remarkable effect on the result of rearrangement and nucleation outcome.
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Affiliation(s)
- Peng Shi
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, People’s Republic of China
| | - Shijie Xu
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, People’s Republic of China
| | - Yiming Ma
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, People’s Republic of China
| | - Weiwei Tang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, People’s Republic of China
| | - Feng Zhang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, People’s Republic of China
| | - Jingkang Wang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, People’s Republic of China
| | - Junbo Gong
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, People’s Republic of China
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