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Dutta M, Bisht S, Ghosh P, Chilug AI, Mann D, Enachescu C, Shatruk M, Chakraborty P. Combined Experimental and Mechanoelastic Modeling Studies on the Low-Spin Stabilized Mixed Crystals of 3D Oxalate-Based Coordination Materials. Inorg Chem 2023; 62:15050-15062. [PMID: 37677120 DOI: 10.1021/acs.inorgchem.3c01919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Structural studies involving single-crystal and powder X-ray diffraction analysis have been performed on dehydrated coordination networks of the [NixCo1-x(bpy)3][LiCr(ox)3] series, 0 ≤ x ≤ 1, (bpy = 2,2'-bipyridine). The high-symmetry cubic 3D structure of these materials is formed by oxalate anions bridging alternating Cr3+ and Li+ ions into an anionic framework, which contains large cavities that incorporate the [NixCo1-x(bpy)3]2+ cations. Irrespective of the Co/Ni ratio, all of the mixed samples are phase-pure and retain the high-symmetry cubic structure, with the lattice parameters gradually decreasing upon increasing Ni(II) concentration. The influence of the Ni(II) dilution on the magnetic behavior of these materials is substantial. For pure [Co(bpy)3][LiCr(ox)3], a gradual but incomplete thermal spin-crossover is evident due to the effect of the chemical pressure applied by the [LiCr(ox)3]2- framework, which stabilizes the low-spin (LS) 2E state relative to the high-spin (HS) 4T1 state of the Co(II) ion. Upon increasing the Ni(II) content, the spin-crossover becomes even more gradual and incomplete and eventually is not observed for pure [Ni(bpy)3][LiCr(ox)3]. The average spin-crossover temperature increases with the increasing Ni(II) content, suggesting a higher degree of chemical pressure applied by the oxalate framework manifested by changing the ΔE0HL toward positive values. The magnetic behavior of all these framework materials has been explained by the mechanoelastic model, considering different radii for Co and Ni molecules and different interactions between Co-Co sites and Co-Ni sites. The model reproduced the incomplete transition, with the HS residual fraction at 300 K decreasing with increasing Ni concentration, and provided microscopic snapshots of the systems, showing how the existence of impurities prevented the spreading of Co atoms in the HS state.
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Affiliation(s)
- Mousumi Dutta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Shubham Bisht
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Prabir Ghosh
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | | | - Dallas Mann
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | | | - Michael Shatruk
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Pradip Chakraborty
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Glatz J, Jiménez JR, Godeffroy L, von Bardeleben HJ, Fillaud L, Maisonhaute E, Li Y, Chamoreau LM, Lescouëzec R. Enlightening the Alkali Ion Role in the Photomagnetic Effect of FeCo Prussian Blue Analogues. J Am Chem Soc 2022; 144:10888-10901. [PMID: 35675503 DOI: 10.1021/jacs.2c03421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
FeCo Prussian blue analogues of general formula AxCoy[Fe(CN)6]z are responsive, non-stoichiometric materials whose magnetic and optical properties can be reversibly switched by light irradiation. However, elucidating the critical influence of the inserted alkali ion, A+, on the material's properties remains complicated due to their complex local structure. Here, by investigating soluble A ⊂ [Fe4-Co4] cyanido cubes (A = K, Rb, and Cs), both accurate structural and electronic information could be obtained. First, X-ray diffraction analyses reveal distinct interactions between the inserted A+ ions and the {Fe4-Co4} box, which impacts the structural distortion in the cubic framework. These distortions vanish, and a displacement of the small K+ ion from a corner toward the center is observed, as a cobalt corner CoIIHS is oxidized to CoIIILS. Second, cyclic voltammetry experiments performed at variable temperatures show distinct splitting of the CoIIHS ⇔ CoIIILS peak potentials for the different A+ cations, which can be qualitatively linked to different thermodynamic (standard potentials) and kinetic (energy barriers) parameters associated with the structural reorganization accompanying this redox-coupled spin state change. Moreover, for the first time, photomagnetism was investigated in frozen solution to avoid effects of intermolecular interactions. The results show that the metastable state is stabilized following the trend K > Rb > Cs. The outcome of these studies suggests that the interaction of the inserted alkali ions with the cyanide cage and the structural changes accompanying the electron transfer impact the stability of the photoinduced state and the relaxation temperature: the smaller the cation, the higher the structural reorganization and the associated energy barrier, and the more stable the metastable state.
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Affiliation(s)
- Jana Glatz
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Juan-Ramón Jiménez
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Louis Godeffroy
- Laboratoire Interface et Systèmes Electrochimiques, CNRS UMR 8235, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Hans Jurgen von Bardeleben
- Institut des Nanosciences de Paris, CNRS UMR 7588, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Laure Fillaud
- Laboratoire Interface et Systèmes Electrochimiques, CNRS UMR 8235, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Emmanuel Maisonhaute
- Laboratoire Interface et Systèmes Electrochimiques, CNRS UMR 8235, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Yanling Li
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Lise-Marie Chamoreau
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Rodrigue Lescouëzec
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
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Avila Y, Terrero R, Crespo PM, Díaz‐Paneque LA, González M, Ávila M, Reguera E. Thermally‐Induced Spin‐Crossover in Fe
1‐x
T
x
(pyrazine)[Fe(CN)
5
NO] with T=Co, Ni – Effects of Iron Atom Dilution. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yosuan Avila
- National Polytechnic Institute Center for Applied Science and Advanced Technology Legaria Unit Mexico City Mexico
| | - Ricardo Terrero
- National Polytechnic Institute Center for Applied Science and Advanced Technology Legaria Unit Mexico City Mexico
| | - Paula M. Crespo
- National Polytechnic Institute Center for Applied Science and Advanced Technology Legaria Unit Mexico City Mexico
| | - Luis A. Díaz‐Paneque
- National Polytechnic Institute Center for Applied Science and Advanced Technology Legaria Unit Mexico City Mexico
| | - Marlene González
- CONACyT – National Polytechnic Institute Center for Applied Science and Advanced Technology Legaria Unit Mexico City Mexico
| | - Manuel Ávila
- National Polytechnic Institute Center for Applied Science and Advanced Technology Legaria Unit Mexico City Mexico
| | - Edilso Reguera
- National Polytechnic Institute Center for Applied Science and Advanced Technology Legaria Unit Mexico City Mexico
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Gruhne MS, Wurzenberger MHH, Lommel M, Stierstorfer J. A Smart Access to the Dinitramide Anion - The Use of Dinitraminic Acid for the Preparation of Nitrogen-Rich Energetic Copper(II) Complexes. Chemistry 2021; 27:9112-9123. [PMID: 33899986 PMCID: PMC8362218 DOI: 10.1002/chem.202100747] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Indexed: 12/17/2022]
Abstract
Dinitraminic acid (HN(NO2)2, HDN) was prepared by ion exchange chromatography and acid‐base reaction with basic copper(II) carbonate allowed the in
situ preparation of copper(II) dinitramide, which was reacted with twelve nitrogen‐rich ligands, for example, 4‐amino‐1,2,4‐triazole, 1‐methyl‐5H‐tetrazole, di(5H‐tetrazolyl)‐methane/‐ethane/‐propane/‐butane. Nine of the complexes were investigated by low‐temperature X‐ray diffraction. In addition, all compounds were investigated by infrared spectroscopy (IR), differential thermal analysis (DTA), elemental analysis (EA) and thermogravimetric analysis (TGA) for selected compounds. Furthermore, investigations of the materials were carried out regarding their sensitivity toward impact (IS), friction (FS), ball drop impact (BDIS) and electrostatic discharge (ESD). In addition, hot plate and hot needle tests were performed. Complex [Cu(AMT)4(H2O)](DN)2, based on 1‐amino‐5‐methyltetrazole (AMT), is most outstanding for its detonative behavior and thus also capable of initiating PETN in classical initiation experiments. Laser ignition experiments at a wavelength of 915 nm were performed for all substances and solid‐state UV‐Vis spectra were recorded to apprehend the ignition mechanism.
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Affiliation(s)
- Michael S Gruhne
- Energetic Materials Research, Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Maximilian H H Wurzenberger
- Energetic Materials Research, Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Marcus Lommel
- Energetic Materials Research, Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Jörg Stierstorfer
- Energetic Materials Research, Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
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Wurzenberger MHH, Braun V, Lommel M, Klapötke TM, Stierstorfer J. Closing the Gap: Synthesis of Three Isomeric N,N-Ditetrazolymethane Ligands and Their Coordination Proficiency in Adaptable Laser Responsive Copper(II) and Sensitive Silver(I) Complexes. Inorg Chem 2020; 59:10938-10952. [DOI: 10.1021/acs.inorgchem.0c01403] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Vanessa Braun
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13 (D), 81377 München, Germany
| | - Marcus Lommel
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13 (D), 81377 München, Germany
| | - Thomas M. Klapötke
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13 (D), 81377 München, Germany
| | - Jörg Stierstorfer
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13 (D), 81377 München, Germany
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