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Erastova V, Evans IR, Glossop WN, Guryel S, Hodgkinson P, Kerr HE, Oganesyan VS, Softley LK, Wickins HM, Wilson MR. Unravelling Guest Dynamics in Crystalline Molecular Organics Using 2H Solid-State NMR and Molecular Dynamics Simulation. J Am Chem Soc 2024; 146:18360-18369. [PMID: 38935813 PMCID: PMC11240262 DOI: 10.1021/jacs.4c03246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/30/2024] [Accepted: 05/30/2024] [Indexed: 06/29/2024]
Abstract
2H solid-state NMR and atomistic molecular dynamics (MD) simulations are used to understand the disorder of guest solvent molecules in two cocrystal solvates of the pharmaceutical furosemide. Traditional approaches to interpreting the NMR data fail to provide a coherent model of molecular behavior and indeed give misleading kinetic data. In contrast, the direct prediction of the NMR properties from MD simulation trajectories allows the NMR data to be correctly interpreted in terms of combined jump-type and libration-type motions. Time-independent component analysis of the MD trajectories provides additional insights, particularly for motions that are invisible to NMR. This allows a coherent picture of the dynamics of molecules restricted in molecular-sized cavities to be determined.
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Affiliation(s)
- Valentina Erastova
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
- Department
of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster
Road, Edinburgh EH9 3FJ, U.K.
| | - Ivana R. Evans
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
| | - William N. Glossop
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
| | - Songül Guryel
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
| | - Paul Hodgkinson
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
| | - Hannah E. Kerr
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
| | | | - Lorna K. Softley
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
| | - Helen M. Wickins
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
| | - Mark R. Wilson
- Department
of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, U.K.
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Tabasi E, Vafa N, Firoozabadi B, Salmankhani A, Nouranian S, Habibzadeh S, Mashhadzadeh AH, Spitas C, Saeb MR. Ion rejection performances of functionalized porous graphene nanomembranes for wastewater purification: A molecular dynamics simulation study. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Khattak HK, Svishchev IM. Analysis of 3D hydration structures using differential spatial distributions. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.04.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pajzderska A, Gonzalez MA, Wąsicki J. Dynamics in molecular and molecular-ionic crystals: A combined experimental and molecular simulation study of reorientational motions in benzene, pyridinium iodide, and pyridinium nitrate. J Chem Phys 2013; 138:024508. [DOI: 10.1063/1.4774096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pajzderska A, Gonzalez MA, Wąsicki J. In-plane pyridinium cation reorientation in bis-thiourea chloride, bromide and iodide: quasielastic neutron scattering combined with molecular dynamics simulations. Phys Chem Chem Phys 2012; 14:3949-59. [PMID: 22322692 DOI: 10.1039/c2cp23668k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have studied the dynamics of bis-thiourea pyridinium chloride and bromide by means of quasielastic neutron scattering (QENS). The QENS data allow describing the geometry of the in-plane motion of the pyridinium cation and reveal that it is similar to the motion previously observed in bis-thiourea pyridinium iodide. Molecular dynamics (MD) simulations have been performed to investigate the cation dynamics on the high temperature phase of the full series of compounds: bis-thiourea pyridinium chloride, bromide and iodide. Three different models of intermolecular potential have been tested and the agreement between the simulated and experimental elastic incoherent structure factors (EISFs) is used to select the more realistic one. The detailed analysis of the MD results indicates that Coulombic interactions together with the formation of hydrogen bonds between the pyridinium cation and the host sublattice influence strongly the geometry of the in-plane cation reorientation.
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Affiliation(s)
- A Pajzderska
- Faculty of Physics, A. Mickiewicz University, Poznań, Poland.
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