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Wilson CG, Cervenka T, Wood PA, Parsons S. Behavior of Occupied and Void Space in Molecular Crystal Structures at High Pressure. CRYSTAL GROWTH & DESIGN 2022; 22:2328-2341. [PMID: 35431662 PMCID: PMC9007411 DOI: 10.1021/acs.cgd.1c01427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/10/2022] [Indexed: 06/14/2023]
Abstract
We report a Monte Carlo algorithm for calculation of occupied ("network") and unoccupied ("void") space in crystal structures. The variation of the volumes of the voids and the network of intermolecular contacts with pressure sensitively reveals discontinuities associated with first- and second-order phase transitions, providing insights into the effect of compression (and, in principle, other external stimuli) at a level between those observed in individual contact distances and the overall unit cell dimensions. The method is shown to be especially useful for the correlation of high-pressure crystallographic and spectroscopic data, illustrated for naphthalene, where a phase transition previously detected by vibrational spectroscopy, and debated in the literature for over 80 years, has been revealed unambiguously in crystallographic data for the first time. Premonitory behavior before a phase transition and crystal collapse at the end of a compression series has also been detected. The network and void volumes for 129 high-pressure studies taken from the Cambridge Structural Database (CSD) were fitted to equation of state to show that networks typically have bulk moduli between 40 and 150 GPa, while those of voids fall into a much smaller range, 2-5 GPa. These figures are shown to reproduce the narrow range of overall bulk moduli of molecular solids (ca. 5-20 GPa). The program, called CellVol, has been written in Python using the CSD Python API and can be run through the command line or through the Cambridge Crystallographic Data Centre's Mercury interface.
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Affiliation(s)
- Cameron
J. G. Wilson
- Centre
for Science at Extreme Conditions, School of Chemistry, The University of Edinburgh, King’s Buildings, West Mains
Road, Edinburgh EH9 3FJ, U.K.
| | - Tomas Cervenka
- Centre
for Science at Extreme Conditions, School of Chemistry, The University of Edinburgh, King’s Buildings, West Mains
Road, Edinburgh EH9 3FJ, U.K.
| | - Peter A. Wood
- The
Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, U.K.
| | - Simon Parsons
- Centre
for Science at Extreme Conditions, School of Chemistry, The University of Edinburgh, King’s Buildings, West Mains
Road, Edinburgh EH9 3FJ, U.K.
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Norre MS, Gao C, Dey S, Gupta SK, Borah A, Murugavel R, Rajaraman G, Overgaard J. High-Pressure Crystallographic and Magnetic Studies of Pseudo-D5h Symmetric Dy(III) and Ho(III) Single-Molecule Magnets. Inorg Chem 2019; 59:717-729. [DOI: 10.1021/acs.inorgchem.9b02962] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Marie S. Norre
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Chen Gao
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Sandeep K. Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Aditya Borah
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Jacob Overgaard
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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3
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Ovcharenko V, Romanenko G, Polushkin A, Letyagin G, Bogomyakov A, Fedin M, Maryunina K, Nishihara S, Inoue K, Petrova M, Morozov V, Zueva E. Pressure-Controlled Migration of Paramagnetic Centers in a Heterospin Crystal. Inorg Chem 2019; 58:9187-9194. [PMID: 31241906 DOI: 10.1021/acs.inorgchem.9b00815] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A study of the single-crystal-to-single-crystal transformation induced by temperature variation for the chain polymer Cu(II) complex with nitronyl nitroxide showed that an increase in the hydrostatic pressure of up to ∼0.07 GPa completely changes the intracrystalline displacements of molecules relative to one another. This, in turn, significantly affects the interaction energy of the unpaired electrons of the paramagnetic centers and hence the form of the temperature dependence of the magnetic susceptibility χT. The cooling of crystals under normal conditions causes a rearrangement of the intrachain exchange clusters {>N-•O-Cu(II)-O•-N<} accompanied by a shortening of the distances between the paramagnetic centers. This changes the character of exchange interactions and generates multistage spin transitions. An increase in the hydrostatic pressure leads to a drastic change in the O···O distances between the nitroxyl fragments of adjacent chains, an increase in the antiferromagnetic exchange between them, and complete suppression of spin transitions.
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Affiliation(s)
- Victor Ovcharenko
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Galina Romanenko
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Alexey Polushkin
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Gleb Letyagin
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia.,Novosibirsk State University , Pirogova Street 1 , Novosibirsk 630090 , Russia
| | - Artem Bogomyakov
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Matvey Fedin
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | | | | | | | - Marina Petrova
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Vitaly Morozov
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia.,Novosibirsk State University , Pirogova Street 1 , Novosibirsk 630090 , Russia
| | - Ekaterina Zueva
- Department of Inorganic Chemistry , Kazan National Research Technological University , 68 K. Marx Street , Kazan 420015 , Russia.,A. E. Arbuzov Institute of Organic and Physical Chemistry , Kazan Scientific Centre of the Russian Academy of Sciences , Arbuzov Street 8 , Kazan 420008 , Russian.,Kazan Federal University , Kremlyovskaya Street 18 , Kazan 420008 , Russia
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4
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Craig GA, Sarkar A, Woodall CH, Hay MA, Marriott KER, Kamenev KV, Moggach SA, Brechin EK, Parsons S, Rajaraman G, Murrie M. Probing the origin of the giant magnetic anisotropy in trigonal bipyramidal Ni(ii) under high pressure. Chem Sci 2018; 9:1551-1559. [PMID: 29675200 PMCID: PMC5890327 DOI: 10.1039/c7sc04460g] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 12/18/2017] [Indexed: 11/30/2022] Open
Abstract
Understanding and controlling magnetic anisotropy at the level of a single metal ion is vital if the miniaturisation of data storage is to continue to evolve into transformative technologies. Magnetic anisotropy is essential for a molecule-based magnetic memory as it pins the magnetic moment of a metal ion along the easy axis. Devices will require deposition of magnetic molecules on surfaces, where changes in molecular structure can significantly alter magnetic properties. Furthermore, if we are to use coordination complexes with high magnetic anisotropy as building blocks for larger systems we need to know how magnetic anisotropy is affected by structural distortions. Here we study a trigonal bipyramidal nickel(ii) complex where a giant magnetic anisotropy of several hundred wavenumbers can be engineered. By using high pressure, we show how the magnetic anisotropy is strongly influenced by small structural distortions. Using a combination of high pressure X-ray diffraction, ab initio methods and high pressure magnetic measurements, we find that hydrostatic pressure lowers both the trigonal symmetry and axial anisotropy, while increasing the rhombic anisotropy. The ligand-metal-ligand angles in the equatorial plane are found to play a crucial role in tuning the energy separation between the d x2-y2 and d xy orbitals, which is the determining factor that controls the magnitude of the axial anisotropy. These results demonstrate that the combination of high pressure techniques with ab initio studies is a powerful tool that gives a unique insight into the design of systems that show giant magnetic anisotropy.
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Affiliation(s)
- Gavin A Craig
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Arup Sarkar
- Department of Chemistry , Indian Institute of Technology Bombay , Powai , Mumbai , Maharashtra 400 076 , India .
| | - Christopher H Woodall
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Moya A Hay
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Katie E R Marriott
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Konstantin V Kamenev
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Stephen A Moggach
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Euan K Brechin
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Simon Parsons
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Gopalan Rajaraman
- Department of Chemistry , Indian Institute of Technology Bombay , Powai , Mumbai , Maharashtra 400 076 , India .
| | - Mark Murrie
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
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Maia JR, Lima JA, Freire PTC, Melo FEA, de Menezes AS, Remédios CMR, Cardoso LP. High pressure studies on bis(l-histidinate)nickel(II) monohydrate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:258-264. [PMID: 28823966 DOI: 10.1016/j.saa.2017.08.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/10/2017] [Accepted: 08/13/2017] [Indexed: 06/07/2023]
Abstract
Raman spectra of bis(l-histidinate)nickel(II) monohydrate crystal were obtained for pressures up to 9.5GPa. Our results show the disappearance of some of the Raman modes and the appearance of other modes. These modifications evidence that the sample undergoes phase transitions at around 0.8 and 3.2GPa. The role played by the Ni ions and hydrogen bonds in the dynamics of the phase transitions is discussed. Under decompression, down to atmospheric pressure, the original Raman spectra are recovered, showing that both phase transitions are fully reversible.
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Affiliation(s)
- J R Maia
- Faculdade de Filosofia Dom Aureliano Mattos, Universidade Estadual do Ceará, CEP 63.900-000 Limoeiro do Norte, CE, Brazil
| | - J A Lima
- Departamento de Física, Universidade Federal do Ceará, C.P. 6030, Campus do Pici, 60440-970 Fortaleza, CE, Brazil.
| | - P T C Freire
- Departamento de Física, Universidade Federal do Ceará, C.P. 6030, Campus do Pici, 60440-970 Fortaleza, CE, Brazil
| | - F E A Melo
- Departamento de Física, Universidade Federal do Ceará, C.P. 6030, Campus do Pici, 60440-970 Fortaleza, CE, Brazil
| | - A S de Menezes
- Departamento de Física, CCET, Universidade Federal do Maranhão, Centro Tecnológico, CEP 65085-580 São Luís, MA, Brazil
| | - C M R Remédios
- Instituto de Ciencias Exatas e Naturais, Universidade Federal do Pará, CEP66075-110 Belém, PA, Brazil
| | - L P Cardoso
- Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, CEP 13083-859 Campinas, SP, Brazil
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