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Dais TN, Takano R, Ishida T, Plieger PG. Lanthanide induced variability in localised Co II geometries of four triangular L 3Co 3 IILn III complexes. RSC Adv 2022; 12:4828-4835. [PMID: 35425468 PMCID: PMC8981366 DOI: 10.1039/d1ra08797e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 02/01/2022] [Indexed: 12/28/2022] Open
Abstract
Four tetranuclear heterobimetallic triangle complexes [L3Co3Dy(NO3)2(H2O)(MeOH)5](NO3) (C1), [L3Co3Gd(NO3)3(MeOH)4] (C2), [L3Co3La(NO3)2(H2O)6](NO3)(H2O) (C3), and [L3Co3TbCl(NO3)2(H2O)0.5(MeOH)3.5] (C4), where H2L = 1,4-bisformylnaphthalene-2,3-diol, have been synthesised and structurally characterised. Each complex crystallises with a complete molecule in the asymmetric unit (Z' = 1) and displays near perfect octahedrality in two out of three CoII centres. The third CoII ion assumes a different coordination geometry in each complex: six-coordinate octahedral in C1, six-coordinate with a distortion towards trigonal prismatic in C2, five-coordinate trigonal bipyramidal in C3, and five-coordinate square pyramidal in C4; which has been attributed to increasing lanthanide cation size, coupled with a non-macrocyclic coordination environment. Continuous Shape Measurement (CShM) calculations and octahedral distortion parameter calculations were performed, using the SHAPE and OctaDist software packages, respectively, in order to aid in the assessment of each metal centre's local coordination geometry. The preliminary magnetic investigation of C3 found χ m T = 9.4 cm3 K mol-1 at 300 K and M = 7.1 μ B at 1.8 K, which are approximately two thirds the maximum theoretical values for three CoII ions and indicates the presence of a relatively large zero-field splitting parameter (D/k B = 65 K) operative in each CoII ion rather than exchange coupling between the CoII centres.
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Affiliation(s)
- Tyson N Dais
- School of Natural Sciences, Massey University Private Bag 11 222 Palmerston North New Zealand
| | - Rina Takano
- Department of Engineering Science, Graduate School of Informatics and Engineering, The University of Electro-Communication 1-5-1 Chofugaoka, Chofu Tokyo 182-8585 Japan
| | - Takayuki Ishida
- Department of Engineering Science, Graduate School of Informatics and Engineering, The University of Electro-Communication 1-5-1 Chofugaoka, Chofu Tokyo 182-8585 Japan
| | - Paul G Plieger
- School of Natural Sciences, Massey University Private Bag 11 222 Palmerston North New Zealand
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2
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Huang W, Wu S, Gu X, Li Y, Okazawa A, Kojima N, Hayami S, Baker ML, Bencok P, Noguchi M, Miyazaki Y, Nakano M, Nakanishi T, Kanegawa S, Inagaki Y, Kawae T, Zhuang GL, Shiota Y, Yoshizawa K, Wu D, Sato O. Temperature dependence of spherical electron transfer in a nanosized [Fe 14] complex. Nat Commun 2019; 10:5510. [PMID: 31796745 PMCID: PMC6890645 DOI: 10.1038/s41467-019-13279-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 10/31/2019] [Indexed: 11/29/2022] Open
Abstract
The study of transition metal clusters exhibiting fast electron hopping or delocalization remains challenging, because intermetallic communications mediated through bridging ligands are normally weak. Herein, we report the synthesis of a nanosized complex, [Fe(Tp)(CN)3]8[Fe(H2O)(DMSO)]6 (abbreviated as [Fe14], Tp-, hydrotris(pyrazolyl)borate; DMSO, dimethyl sulfoxide), which has a fluctuating valence due to two mobile d-electrons in its atomic layer shell. The rate of electron transfer of [Fe14] complex demonstrates the Arrhenius-type temperature dependence in the nanosized spheric surface, wherein high-spin centers are ferromagnetically coupled, producing an S = 14 ground state. The electron-hopping rate at room temperature is faster than the time scale of Mössbauer measurements (<~10-8 s). Partial reduction of N-terminal high spin FeIII sites and electron mediation ability of CN ligands lead to the observation of both an extensive electron transfer and magnetic coupling properties in a precisely atomic layered shell structure of a nanosized [Fe14] complex.
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Affiliation(s)
- Wei Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis & Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Shuqi Wu
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Xiangwei Gu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis & Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Yao Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis & Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Atsushi Okazawa
- Department of Basic Science, Graduation School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Norimichi Kojima
- Toyota Physical and Chemical Research Institute, Yokomichi, Nagakute, Aichi, 480-1192, Japan
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology and Institute of Pulsed Power Science (IPPS), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Michael L Baker
- The School of Chemistry, The University of Manchester, Manchester, M13 9PL, UK
- The School of Chemistry, The University of Manchester at Harwell, Didcot, OX11 0FA, UK
| | - Peter Bencok
- Diamond Light Source, Science Division, Didcot, OX11 0DE, UK
| | - Mariko Noguchi
- Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
- Department of Chemistry, College of Humanities and Sciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo, 156-8550, Japan
| | - Yuji Miyazaki
- Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Motohiro Nakano
- Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Takumi Nakanishi
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Shinji Kanegawa
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yuji Inagaki
- Department of Applied Quantum Physics, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Tatsuya Kawae
- Department of Applied Quantum Physics, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Gui-Lin Zhuang
- Institute of Industrial Catalysis, College of Chemical Engineering, State Key Lab Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Dayu Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis & Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China.
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
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Clemente-Juan JM, Palii A, Coronado E, Tsukerblat B. Mixed-Valence Molecular Unit for Quantum Cellular Automata: Beyond the Born–Oppenheimer Paradigm through the Symmetry-Assisted Vibronic Approach. J Chem Theory Comput 2016; 12:3545-60. [DOI: 10.1021/acs.jctc.6b00267] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | - Andrew Palii
- Institute
of Applied Physics, Academy of Sciences of Moldova, Chişinău, Moldova
- Institute
of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation
| | - Eugenio Coronado
- Instituto
de Ciencia Molecular, Universidad de Valencia, Paterna, Spain
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