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Nishikiori SI, Ishiyama Y. Structural Transformation and Conservation of Structural Order of [CuZn(CN)4]− Net. CHEM LETT 2018. [DOI: 10.1246/cl.180767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shin-ichi Nishikiori
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Yuta Ishiyama
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
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Kamali K, Ravindran TR, Ravi C. Comparative Raman spectroscopic study of phase stability and anharmonic effects in AZr2(PO4)3 (A=K, Rb and Cs). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 155:38-46. [PMID: 26583520 DOI: 10.1016/j.saa.2015.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/02/2015] [Accepted: 11/03/2015] [Indexed: 06/05/2023]
Abstract
AZr2(PO4)3 (A=Na, K, Rb, Cs) are a set of framework structured compounds that exhibit tunable ultralow thermal expansion over the wide temperature range of 293-1273K. We report a systematic Raman spectroscopic investigation on AZr2(PO4)3 (A=K, Rb and Cs) compounds as a function of temperature in the range 80-860K and pressures of up to 32GPa. To get insight into the thermal expansion property, phonon anharmonicity has been investigated by studying the temperature and pressure dependence of Raman peak shifts and line widths and computed bulk modulus. We have compared the phase transition and amorphization pressures of the various members of AZr2(PO4)3 to account for the stability of the ambient rhombohedral phase. We find that unlike most of the anomalous thermal expansion materials, in AZr2(PO4)3 (A=K, Rb and Cs), the phonons that are anharmonic with temperature do not necessarily exhibit anharmonicity with pressure.
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Affiliation(s)
- K Kamali
- Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India.
| | - T R Ravindran
- Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
| | - C Ravi
- Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
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Mishra SK, Mittal R, Zbiri M, Rao R, Goel P, Hibble SJ, Chippindale AM, Hansen T, Schober H, Chaplot SL. New insights into the compressibility and high-pressure stability of Ni(CN)2: a combined study of neutron diffraction, Raman spectroscopy, and inelastic neutron scattering. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:045402. [PMID: 26751175 DOI: 10.1088/0953-8984/28/4/045402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nickel cyanide is a layered material showing markedly anisotropic behaviour. High-pressure neutron diffraction measurements show that at pressures up to 20.1 kbar, compressibility is much higher in the direction perpendicular to the layers, c, than in the plane of the strongly chemically bonded metal-cyanide sheets. Detailed examination of the behaviour of the tetragonal lattice parameters, a and c, as a function of pressure reveal regions in which large changes in slope occur, for example, in c(P) at 1 kbar. The experimental pressure dependence of the volume data is fitted to a bulk modulus, B0, of 1050 (20) kbar over the pressure range 0-1 kbar, and to 124 (2) kbar over the range 1-20.1 kbar. Raman spectroscopy measurements yield additional information on how the structure and bonding in the Ni(CN)2 layers change with pressure and show that a phase change occurs at about 1 kbar. The new high-pressure phase, (Phase PII), has ordered cyanide groups with sheets of D4h symmetry containing Ni(CN)4 and Ni(NC)4 groups. The Raman spectrum of phase PII closely resembles that of the related layered compound, Cu1/2Ni1/2(CN)2, which has previously been shown to contain ordered C≡N groups. The phase change, PI to PII, is also observed in inelastic neutron scattering studies which show significant changes occurring in the phonon spectra as the pressure is raised from 0.3 to 1.5 kbar. These changes reflect the large reduction in the interlayer spacing which occurs as Phase PI transforms to Phase PII and the consequent increase in difficulty for out-of-plane atomic motions. Unlike other cyanide materials e.g. Zn(CN)2 and Ag3Co(CN)6, which show an amorphization and/or a decomposition at much lower pressures (~100 kbar), Ni(CN)2 can be recovered after pressurising to 200 kbar, albeit in a more ordered form.
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Affiliation(s)
- Sanjay K Mishra
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
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McKellar SC, Moggach SA. Structural studies of metal–organic frameworks under high pressure. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2015; 71:587-607. [DOI: 10.1107/s2052520615018168] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 09/28/2015] [Indexed: 11/10/2022]
Abstract
Over the last 10 years or so, the interest and number of high-pressure studies has increased substantially. One area of growth within this niche field is in the study of metal–organic frameworks (MOFs or coordination polymers). Here we present a review on the subject, where we look at the structural effects of both non-porous and porous MOFs, and discuss their mechanical and chemical response to elevated pressures.
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Yamada J, Nishikiori SI. New structure, reconstruction, and behaviour of the coordination polymer framework [CuZn(CN) 4] – towards hydrated alkali metal ions. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new framework structure of the coordination polymer [CuZn(CN)4]– has been discovered in the newly synthesized [Na(H2O)n][CuZn(CN)4] (n = 12.7; 1). X-ray crystal structure analysis revealed a 3D framework comprised of tetrahedral Cu(I) and Zn(II) centres with bridging cyanide ligands containing both octagonal and square channel cavities; these channels contain hydrated Na+ ions as guests. In open air, complex 1 is extremely unstable and loses water molecules to form [Na(H2O)n][CuZn(CN)4] (n = 5.2–6.8; 2) within 30 min. Powder X-ray diffraction patterns showed that this change results in the conversion of the framework of complex 1 to the same framework observed in [K(H2O)n][CuZn(CN)4]. The [CuZn(CN)4]– framework of [K(H2O)n][CuZn(CN)4] has a tridymite structure with hexagonal channel cavities occupied by hydrated K+ ions. Like 1, 2 is also unstable under atmospheric conditions, yielding [Na(H2O)n][CuZn(CN)4] (n = 3), which has an unknown structure. While the framework of [K(H2O)n][CuZn(CN)4] is structurally flexible and robust, the framework of 2 is unstable and fragile. This contrast comes from the difference between the nature of the hydrated K+ and Na+ ions present in the frameworks.
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Affiliation(s)
- Junpei Yamada
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - Shin-ichi Nishikiori
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
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Souza ML, Castellano EE, Telser J, Franco DW. Secondary Coordination Sphere Effects in Ruthenium(III) Tetraammine Complexes: Role of the Coordinated Water Molecule. Inorg Chem 2015; 54:2067-80. [DOI: 10.1021/ic5030857] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
| | | | - Joshua Telser
- Department of Biological,
Chemical and Physical Sciences, Roosevelt University, Chicago, Illinois 60605 United States
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Nishikiori S. Reversible reconstructive transition of the [CuZn(CN)4]− framework host induced by guest exchange. CrystEngComm 2014. [DOI: 10.1039/c4ce01435a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The framework host [CuZn(CN)4]− exhibits a reversible reconstructive transition in the solid-state between a cristobalite-like framework and a tridymite-like one induced by guest exchange.
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Affiliation(s)
- S. Nishikiori
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902, Japan
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Lapidus SH, Halder GJ, Chupas PJ, Chapman KW. Exploiting high pressures to generate porosity, polymorphism, and lattice expansion in the nonporous molecular framework Zn(CN)2. J Am Chem Soc 2013; 135:7621-8. [PMID: 23634869 DOI: 10.1021/ja4012707] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Systematic exploration of the molecular framework material Zn(CN)2 at high pressure has revealed several distinct series of transitions leading to five new phases: four crystalline and one amorphous. The structures of the new crystalline phases have been resolved through ab initio structural determination, combining charge flipping and direct space methods, based on synchrotron powder diffraction data. The specific transition activated under pressure depends principally on the pressure-transmitting fluid used. Without fluid or in large molecule fluids (e.g., isopropanol, ethanol, or fluorinert), the high-pressure behavior intrinsic to Zn(CN)2 is observed; the doubly interpenetrated diamondoid framework structure transforms to a distorted, orthorhombic polymorph, Zn(CN)2-II (Pbca) at ~1.50-1.58 GPa with asymmetric displacement of the bridging CN ligand and reorientation of the Zn(C/N)4 tetrahedra. In small molecule fluids (e.g., water, methanol, methanol-ethanol-water), the nonporous interpenetrated Zn(CN)2 framework can undergo reconstructive transitions to porous, non-interpenetrated polymorphs with different topologies: diamondoid (dia-Zn(CN)2, Fd3m, P(trans) ~ 1.2 GPa), londaleite (lon-Zn(CN)2, P6(3)/mmc, P(trans) ~ 0.9 GPa), and pyrite-like (pyr-Zn(CN)2, Pa3, P(trans) ~ 1.8 GPa). Remarkably, these pressure-induced transitions are associated with near 2-fold volume expansions. While an increase in volume with pressure is counterintuitive, the resulting new phases contain large fluid-filled pores, such that the combined solid + fluid volume is reduced and the inefficiencies in space filling by the interpenetrated parent phase are eliminated. That both dia-Zn(CN)2 and lon-Zn(CN)2 phases were retained upon release to ambient pressure demonstrates the potential for application of hydrostatic pressures to interpenetrated framework systems as a novel means to generate new porous materials.
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Affiliation(s)
- Saul H Lapidus
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
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Collings IE, Cairns AB, Thompson AL, Parker JE, Tang CC, Tucker MG, Catafesta J, Levelut C, Haines J, Dmitriev V, Pattison P, Goodwin AL. Homologous Critical Behavior in the Molecular Frameworks Zn(CN)2 and Cd(imidazolate)2. J Am Chem Soc 2013; 135:7610-20. [DOI: 10.1021/ja401268g] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ines E. Collings
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory,
South Parks Road, Oxford, OX1 3QR, United Kingdom
| | - Andrew B. Cairns
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory,
South Parks Road, Oxford, OX1 3QR, United Kingdom
| | - Amber L. Thompson
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory,
South Parks Road, Oxford, OX1 3QR, United Kingdom
| | - Julia E. Parker
- Diamond Light Source, Chilton, Oxfordshire, OX11 0DE, United Kingdom
| | - Chiu C. Tang
- Diamond Light Source, Chilton, Oxfordshire, OX11 0DE, United Kingdom
| | - Matthew G. Tucker
- ISIS Facility, Harwell
Science and Innovation Campus, Didcot, OX11 0QX, United
Kingdom
| | - Jadna Catafesta
- Laboratoire Charles
Coulomb,
UMR−CNRS 5221, Université Montpellier 2, Place E. Bataillon, 34095, Montpellier Cedex 5, France
- Institut Charles Gerhardt, Équipe
C2M, UMR−CNRS 5253, Université Montpellier 2, Place E. Bataillon, 34095, Montpellier Cedex 5, France
| | - Claire Levelut
- Laboratoire Charles
Coulomb,
UMR−CNRS 5221, Université Montpellier 2, Place E. Bataillon, 34095, Montpellier Cedex 5, France
| | - Julien Haines
- Institut Charles Gerhardt, Équipe
C2M, UMR−CNRS 5253, Université Montpellier 2, Place E. Bataillon, 34095, Montpellier Cedex 5, France
| | - Vladimir Dmitriev
- Swiss-Norwegian Beamlines, ESRF, Polygone Scientifique Louis Néel, 6 rue Jules
Horowitz, 38000, Grenoble, France
| | - Philip Pattison
- Swiss-Norwegian Beamlines, ESRF, Polygone Scientifique Louis Néel, 6 rue Jules
Horowitz, 38000, Grenoble, France
- Crystallography Competence Centre, École Polytechnique Fédérale de Lausanne, BSP, CH-1015 Lausanne,
Switzerland
| | - Andrew L. Goodwin
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory,
South Parks Road, Oxford, OX1 3QR, United Kingdom
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