1
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Sato H, Onuki T, Newton GN, Shiga T, Oshio H. Four Redox Isomers of a [3 × 3] Copper-Iron Heterometal Grid. Inorg Chem 2023; 62:18003-18008. [PMID: 37828836 DOI: 10.1021/acs.inorgchem.3c02498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
A mixed-valence heterometallic nonanuclear [3 × 3] grid complex, [CuI2CuII6FeIII(L)6](BF4)5·MeOH·9H2O (1; MeOH = methanol), was synthesized by a one-pot reaction of copper and iron ions with multidentate ligand 2,6-bis[5-(2-pyridinyl)-1H-pyrazol-3-yl]pyridine (H2L). 1 showed five quasi-reversible one-electron redox processes centered at +0.74, +0.60, +0.39, +0.27, and -0.13 V versus SCE, assignable to four CuI/CuII processes and one FeII/FeIII couple, respectively. The two-electron-oxidized species [CuII8FeIII(L)6](PF6)7·4MeOH·7H2O (12eOx), the two-electron-reduced species [CuI4CuII4FeIII(L)6](PF6)3·2H2O (12eRed), and the three-electron-reduced species [CuI4CuII4FeII(L)6](PF6)2·5MeOH·H2O (13eRed) were isolated electrochemically. The four redox isomers were characterized by single-crystal X-ray analysis, SQUID magnetometry, and Mössbauer spectroscopy.
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Affiliation(s)
- Hiroki Sato
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Onuki
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan
| | - Graham N Newton
- GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Jubilee Campus, Nottingham NG7 2TU, U.K
| | - Takuya Shiga
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan
| | - Hiroki Oshio
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology 2 Linggong Road, Dalian 116024, China
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2
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Paschelke T, Trumpf E, Grantz D, Pankau M, Grocholski N, Näther C, Sönnichsen FD, McConnell AJ. Tuning the spin-crossover properties of FeII4L 6 cages via the interplay of coordination motif and linker modifications. Dalton Trans 2023; 52:12789-12795. [PMID: 37615965 DOI: 10.1039/d3dt01569f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Despite the increasing number of spin-crossover FeII-based cages, the interplay between ligand modifications (e.g. coordination motif substituents and linker) is not well-understood in these multinuclear systems, limiting rational design. Here, we report a family of FeII4L6 spin-crossover cages based on 2,2'-pyridylbenzimidazoles where subtle ligand modifications lowered the spin crossover temperature in CD3CN by up to 186 K. Comparing pairs of cages, CH3 substituents on either the coordination motif or phenylene linker lowered the spin-crossover temperature by 48 K, 91 K or 186 K, attributed to electronic effects, steric effects and a combination of both, respectively. The understanding of the interplay between ligand modifications gained from this study could be harnessed on the path towards the improved rational design of spin-crossover cages.
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Affiliation(s)
- Tobias Paschelke
- Otto Diels Institute of Organic Chemistry, Kiel University, Otto-Hahn-Platz 4, Kiel 24098, Germany
| | - Eicke Trumpf
- Otto Diels Institute of Organic Chemistry, Kiel University, Otto-Hahn-Platz 4, Kiel 24098, Germany
| | - David Grantz
- Otto Diels Institute of Organic Chemistry, Kiel University, Otto-Hahn-Platz 4, Kiel 24098, Germany
| | - Malte Pankau
- Otto Diels Institute of Organic Chemistry, Kiel University, Otto-Hahn-Platz 4, Kiel 24098, Germany
| | - Niclas Grocholski
- Otto Diels Institute of Organic Chemistry, Kiel University, Otto-Hahn-Platz 4, Kiel 24098, Germany
| | - Christian Näther
- Institute of Inorganic Chemistry, Kiel University, Max-Eyth-Straße 2, Kiel 24118, Germany
| | - Frank D Sönnichsen
- Otto Diels Institute of Organic Chemistry, Kiel University, Otto-Hahn-Platz 4, Kiel 24098, Germany
| | - Anna J McConnell
- Otto Diels Institute of Organic Chemistry, Kiel University, Otto-Hahn-Platz 4, Kiel 24098, Germany
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3
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Structure, Optical and Magnetic Properties of Two Isomeric 2-Bromomethylpyridine Cu(II) Complexes [Cu(C 6H 9NBr) 2(NO 3) 2] with Very Different Binding Motives. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020731. [PMID: 36677789 PMCID: PMC9866386 DOI: 10.3390/molecules28020731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/29/2022] [Accepted: 01/05/2023] [Indexed: 01/12/2023]
Abstract
Two isomeric 2-bromomethylpyridine Cu(II) complexes [Cu(C6H9NBr)2(NO3)2] with 2-bromo-5-methylpyridine (L1) and 2-bromo-4-methylpyridine (L2) were synthesized as air-stable blue materials in good yields. The crystal structures were different with [Cu(L1)2(NO3)2] (CuL1) crystallizing in the monoclinic space group P21/c, while the 4-methyl derivative CuL2 was solved and refined in triclinic P1¯. The orientation of the Br substituents in the molecular structure (anti (CuL1) vs. syn (CuL2) conformations) and the geometry around Cu(II) in an overall 4 + 2 distorted coordination was very different with two secondary (axially elongated) Cu-O bonds on each side of the CuN2O2 basal plane in CuL1 or both on one side in CuL2. The two Br substituents in CuL2 come quite close to the Cu(II) centers and to each other (Br⋯Br ~3.7 Å). Regardless of these differences, the thermal behavior (TG/DTA) of both materials is very similar with decomposition starting at around 160 °C and CuO as the final product. In contrast to this, FT-IR and Raman frequencies are markedly different for the two isomers and the UV-vis absorption spectra in solution show marked differences in the π-π* absorptions at 263 (CuL2) or 270 (CuL1) nm and in the ligand-to-metal charge transfer bands at around 320 nm which are pronounced for CuL1 with the higher symmetry at the Cu(II) center, but very weak for CuL2. The T-dependent susceptibility measurements also show very similar results (µeff = 1.98 µB for CuL1 and 2.00 µB for CuL2 and very small Curie-Weiss constants of about -1. The EPR spectra of both complexes show axial symmetry, very similar averaged g values of 2.123 and 2.125, respectively, and no hyper-fine splitting.
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4
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Hassen S, Arfaoui Y, Robeyns K, Steenhaut T, Filinchuk Y, Klein A, Chebbi H. Architecture of a dinuclear Co(II) complex based on 3-amino-1,2,4-triazole-5-carboxylic acid: molecular structure, thermal behavior, optical properties, and DFT calculations. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2090246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Sabri Hassen
- Faculty of Sciences of Tunis, Laboratory of Characterizations, Applications and Modeling of Materials, University of Tunis El Manar, Tunis, Tunisia
| | - Youssef Arfaoui
- Faculty of Sciences of Tunis, Laboratory of Characterizations, Applications and Modeling of Materials, University of Tunis El Manar, Tunis, Tunisia
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve 1348, Belgium
| | - Timothy Steenhaut
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve 1348, Belgium
| | - Yaroslav Filinchuk
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve 1348, Belgium
| | - Axel Klein
- Faculty of Mathematics and Natural Sciences, Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Cologne 50939, Germany
| | - Hammouda Chebbi
- Preparatory Institute for Engineering Studies of Tunis, University of Tunis, Montfleury, Tunis 1089, Tunisia
- Faculty of Sciences of Tunis, Laboratory of Materials, Crystal Chemistry and Applied Thermodynamics, University of Tunis El Manar, Tunis, Tunisia
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5
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Shin HJ, Jang YJ, Zenno H, Hayami S, Min KS. Formation of polynuclear iron(III) complexes of N-(2-pyridylmethyl)iminodipropanol depending on pseudohalide ions: synthesis, crystal structure, and magnetic properties. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Shiga T, Ito H, Mihara N, Nihei M. Syntheses, structures, and magnetic properties of a series of Mn-M-Mn trinuclear complexes with different spin configurations. Dalton Trans 2021; 51:562-569. [PMID: 34901982 DOI: 10.1039/d1dt03030b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of trinuclear complexes, [MnII2YIII(L)2(HL)2(NO3)3][YIII(NO3)5]·7H2O (1'), [MnII2GdIII(HL)4(NO3)4]2[MnII2GdIII(L)(HL)3(NO3)4][GdIII(NO3)5]4·2(o-Xy)·12H2O (2') and [MnII3(L)(HL)2(NO3)4](NO3)·1.25(p-Xy) (3'), were synthesized using a β-diketone ligand HL (HL = 1,3-bis(pyridin-2-yl)propane-1,3-dione). X-ray structural analyses revealed that each complex has a trinuclear core with an Mn(II)-M-Mn(II) arrangement (M = YIII (1), GdIII (2), and MnII (3)). In 1' with a diamagnetic Y(III) ion, negligible antiferromagnetic interactions between terminal Mn(II) ions are operative. On the other hand, 2' shows ferromagnetic interactions between Mn(II) and Gd(III) ions, affording a spin ground state of ST = 17/2. The homometallic Mn(II)3 complex of 3' has an ST = 5/2 spin ground state resulting from the antiferromagnetic interactions between neighboring Mn(II) ions. The maximum magnetic entropy change (-ΔSm) of 1'-3' was estimated to be 12.3, 24.8, and 8.0 J kg-1 K-1, respectively.
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Affiliation(s)
- Takuya Shiga
- Degree Programs in Pure and Applied Sciences, Graduate School of Science and Technology, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
| | - Honami Ito
- Degree Programs in Pure and Applied Sciences, Graduate School of Science and Technology, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
| | - Nozomi Mihara
- Degree Programs in Pure and Applied Sciences, Graduate School of Science and Technology, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
| | - Masayuki Nihei
- Degree Programs in Pure and Applied Sciences, Graduate School of Science and Technology, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
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7
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Pearce BH, Joseph MC, Nkabyo HA, Luckay RC. Pincer-like pyrazole- and imidazole-pyridinyl compounds: Synthesis, characterisation, crystallographic and computational investigation. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Shiga T, Tachibana M, Sagayama H, Kumai R, Newton GN, Oshio H, Nihei M. A ring of grids: a giant spin-crossover cluster. Chem Commun (Camb) 2021; 57:10162-10165. [PMID: 34516598 DOI: 10.1039/d1cc04346c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Mononuclear and icosanuclear spin-crossover complexes, [FeII(HL)2](BF4)2 (1) and [FeII20(L)24](BF4)16 (2), were synthesized using an asymmetric multidentate ligand (HL). 1 has a bis-chelate structure with two protonated ligands, while 2 has a ring-shape structure comprising four [2 × 2] grid moieties and four mononuclear units.
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Affiliation(s)
- Takuya Shiga
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
| | - Minami Tachibana
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
| | - Hajime Sagayama
- Photon Factory and Condensed Matter Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan
| | - Reiji Kumai
- Photon Factory and Condensed Matter Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan
| | - Graham N Newton
- GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2TU, UK
| | - Hiroki Oshio
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan. .,State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., 116024 Dalian, China
| | - Masayuki Nihei
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
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9
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Multireversible Redox Processes in a Self‐Assembled Nickel Pentanuclear Bis(Triple‐stranded Helicate): Structural and Spectroscopic Characterizations in the Ni
II
5
and Ni
I
Ni
II
4
Redox States. ChemElectroChem 2021. [DOI: 10.1002/celc.202100895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Schlindwein SH, Sibold C, Schenk M, Ringenberg MR, Feil CM, Nieger M, Gudat D. A Ditopic Phosphane‐decorated Benzenedithiol as Scaffold for Di‐ and Trinuclear Complexes of Group‐10 Metals and Gold. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Simon H. Schlindwein
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Carlo Sibold
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Mareike Schenk
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Mark R. Ringenberg
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Christoph M. Feil
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Martin Nieger
- Department of Chemistry University of Helsinki 00014 Helsinki Finland
| | - Dietrich Gudat
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70550 Stuttgart Germany
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11
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Pentanuclear Nickel(II) Complex with two Vertex‐Shared Triaminoguanidine Fragments and Symmetric Capping Ligand. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Gouré E, Gerey B, Molton F, Pécaut J, Clérac R, Thomas F, Fortage J, Collomb MN. Seven Reversible Redox Processes in a Self-Assembled Cobalt Pentanuclear Bis(triple-stranded helicate): Structural, Spectroscopic, and Magnetic Characterizations in the CoICoII4, CoII5, and CoII3CoIII2 Redox States. Inorg Chem 2020; 59:9196-9205. [DOI: 10.1021/acs.inorgchem.0c01102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eric Gouré
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | | | | | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, 38000 Grenoble, France
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, F-33600 Pessac, France
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13
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Shiga T, Nojiri H, Oshio H. A Ferromagnetically Coupled Octanuclear Manganese(III) Cluster: A Single-Molecule Magnet with a Spin Ground State of S = 16. Inorg Chem 2020; 59:4163-4166. [PMID: 31985215 DOI: 10.1021/acs.inorgchem.9b03343] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An octanuclear manganese complex, [MnIII8(μ4-O)4(L)4(OMe)4(OAc)4(OCH2CH2NH3)4] [1; H2L = 3-(dimethoxymethyl)-2-hydroxybenzoic acid], was synthesized with an extended cubane core structure consisting of eight Mn ions bridged by O atoms. Cryomagnetic studies revealed that 1 showed a single-molecule-magnet behavior with an S = 16 spin ground state.
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Affiliation(s)
- Takuya Shiga
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan
| | - Hiroyuki Nojiri
- Institute of Materials Research, Tohoku University, Katahira 2-1-1, Sendai, Miyagi 980-8577, Japan
| | - Hiroki Oshio
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, P. R. China
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14
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Izu H, Kondo M, Saga Y, Iwami H, Masaoka S. Rational Synthetic Strategy for Heterometallic Multinuclear Complexes. CHEM LETT 2020. [DOI: 10.1246/cl.190815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hitoshi Izu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Department of Life and Coordination-Complex Melecular Science, Institute for Molecular Science, 5-1 Myodaiji, Okazaki, Aichi 444-8787, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - Mio Kondo
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yutaka Saga
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hikaru Iwami
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Department of Life and Coordination-Complex Melecular Science, Institute for Molecular Science, 5-1 Myodaiji, Okazaki, Aichi 444-8787, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - Shigeyuki Masaoka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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15
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Akai T, Kondo M, Lee SK, Izu H, Enomoto T, Okamura M, Saga Y, Masaoka S. Effect of metal ion substitution on the catalytic activity of a pentanuclear metal complex. Dalton Trans 2020; 49:1384-1387. [DOI: 10.1039/c9dt04684d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pentanuclear cobalt complex that consists of five cobalt ions and six bpp− ligands (Co5, Hbpp = 3,5-bis(2-pyridyl)pyrazole) was newly developed. The obtained complex can catalyze CO2 reduction under electrochemical and photochemical conditions.
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Affiliation(s)
- Takuya Akai
- Division of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Mio Kondo
- Division of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Sze Koon Lee
- Department of Life and Coordination-Complex Molecular Science
- Institute for Molecular Science (IMS)
- Okazaki
- Japan
| | - Hitoshi Izu
- Division of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Takafumi Enomoto
- Department of Life and Coordination-Complex Molecular Science
- Institute for Molecular Science (IMS)
- Okazaki
- Japan
| | - Masaya Okamura
- Department of Life and Coordination-Complex Molecular Science
- Institute for Molecular Science (IMS)
- Okazaki
- Japan
| | - Yutaka Saga
- Division of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Shigeyuki Masaoka
- Division of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
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16
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Liu T, Wu K, Wang L, Fan H, Zhou YG, Yu Z. Assembled Multinuclear Ruthenium(II)–NNNN Complexes: Synthesis, Catalytic Properties, and DFT Calculations. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00669] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Tingting Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, PR China
| | - Kaikai Wu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, PR China
| | - Liandi Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, PR China
| | - Hongjun Fan
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, PR China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China
| | - Yong-Gui Zhou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, PR China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, PR China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, PR China
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17
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Shiga T, Okawa N, Oshio H. A triple-triangle cluster derived from a simple tridentate ligand. Dalton Trans 2019; 48:17437-17440. [PMID: 31686072 DOI: 10.1039/c9dt03232k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The heptanuclear ferric cluster, [FeIII7(O)6(HL)5(H2L)(H2O)8](BF4)4 (H2L = 2,6-bis(1,5-diphenyl-1H-pyrazol-3-yl)pyridine), was synthesized by the reaction of the planar tridentate ligand H2L with iron(ii) tetrafluoroborate hexahydrate. The cluster has a corner-shared triple-triangle core structure connected by three μ-O atoms, and it has a spin-frustrated ferrimagnetic spin ground state of S = 19/2.
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Affiliation(s)
- Takuya Shiga
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
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18
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Berdiell IC, Hochdörffer T, Desplanches C, Kulmaczewski R, Shahid N, Wolny JA, Warriner SL, Cespedes O, Schünemann V, Chastanet G, Halcrow MA. Supramolecular Iron Metallocubanes Exhibiting Site-Selective Thermal and Light-Induced Spin-Crossover. J Am Chem Soc 2019; 141:18759-18770. [DOI: 10.1021/jacs.9b08862] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Izar Capel Berdiell
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Tim Hochdörffer
- Department of Physics, Technical University of Kaiserslautern, Erwin Schrödinger Straße 46, D-67663 Kaiserslautern, Germany
| | | | - Rafal Kulmaczewski
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Namrah Shahid
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Juliusz A. Wolny
- Department of Physics, Technical University of Kaiserslautern, Erwin Schrödinger Straße 46, D-67663 Kaiserslautern, Germany
| | - Stuart L. Warriner
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Oscar Cespedes
- School of Physics and Astronomy, EC Stoner Building, University of Leeds, Leeds LS2 9JT, U.K
| | - Volker Schünemann
- Department of Physics, Technical University of Kaiserslautern, Erwin Schrödinger Straße 46, D-67663 Kaiserslautern, Germany
| | | | - Malcolm A. Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
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19
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Zheng C, Jia S, Dong Y, Xu J, Sui H, Wang F, Li D. Symmetry Breaking and Two-Step Spin-Crossover Behavior in Two Cyano-Bridged Mixed-Valence {FeIII2(μ-CN)4FeII2} Clusters. Inorg Chem 2019; 58:14316-14324. [DOI: 10.1021/acs.inorgchem.9b00544] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chunyang Zheng
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
- Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, P. R. China
| | - Shuwen Jia
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yubao Dong
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Juping Xu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Huanhuan Sui
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Feng Wang
- College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, P. R. China
| | - Dongfeng Li
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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20
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Wong JWL, Demeshko S, Dechert S, Meyer F. Heterometallic Ru 2Co 2 [2 × 2] Grid with Localized Single Molecule Magnet Behavior. Inorg Chem 2019; 58:13337-13345. [PMID: 31502457 DOI: 10.1021/acs.inorgchem.9b02214] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal complexes with a [n × n] gridlike structure are discussed as attractive building blocks for various materials chemistry applications in molecular nanotechnology and electronics, which often rely on the grids' magnetic and redox properties. Most of the known metallogrids are homometallic, though heterometallic systems that comprise two or more different metals promise higher level functionalities. However, heterometallic [n × n] grids are relatively rare, mostly because of the more challenging synthetic strategies. To that end a new heterometallic [2 × 2] grid complex [L4Ru2Co2](BF4)4 (2) based on a known pyrazolate-bridged bis(tridentate) compartmental N-donor ligand [L]- is presented in this work, along with its doubly oxidized congener [L4Ru2Co2](BF4)6 (3). In order to prevent scrambling of the different metal ions, a stepwise synthetic approach was implemented in which an inert RuII "corner complex" [(HL)2Ru](BF4)2 (1) was isolated first, followed by addition of the more labile CoII. This exclusively yields the desired [L4Ru2Co2]4+ with anti-topology, viz., with the RuII and CoII ions situated at opposite corners of the [2 × 2] grid, as confirmed by single crystal X-ray diffraction. 2 can be sequentially oxidized four times, first at the Co vertices and then at the Ru vertices. 1H NMR spectroscopy as well as ESI mass spectrometry evidenced integrity of the [L4Ru2Co2]4+/6+ grids in solution. Structural and magnetic analyses revealed that paramagnetic 2 features LS-RuII and HS-CoII ions (LS = low-spin, HS = high-spin) whereas LS-RuII and LS-CoIII ions are present in diamagnetic 3. The LS-RuII ions in 2 serve to magnetically isolate the HS-CoII whose coordination geometry is strongly distorted from octahedral. A large and negative axial zero-field splitting value (D = -64 cm-1) for the local S = 3/2 ions is shown to lead to single molecule magnetic (SMM) properties characterized by a barrier to spin inversion of Ueff = 8.8 cm-1 and a single relaxation process with τo = 3.1 × 10-5 s. Transition metal [2 × 2] grid complexes showing SMM behavior are extremely rare, and this is the first heterometallic 3d/4d grid system featuring such a magnetic signature.
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Affiliation(s)
- Joanne W L Wong
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Serhiy Demeshko
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Sebastian Dechert
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Franc Meyer
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
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21
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Nakamura T, Kawashima Y, Nishibori E, Nabeshima T. Bpytrisalen/Bpytrisaloph: A Triangular Platform That Spatially Arranges Different Multiple Labile Coordination Sites. Inorg Chem 2019; 58:7863-7872. [DOI: 10.1021/acs.inorgchem.9b00549] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takashi Nakamura
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Yuto Kawashima
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Eiji Nishibori
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Nabeshima
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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22
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Zhou H, Dong R, Wang Z, Wu L, Liu Y, Shen X. The Influence of d‐f Coupling on Slow Magnetic Relaxation in Ni
II
Ln
III
M
III
(Ln = Gd, Tb, Dy; M = Cr, Fe, Co) Clusters. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900263] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Hongbo Zhou
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Rongyao Dong
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Zhuowei Wang
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Lei Wu
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Yashu Liu
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology 212003 Zhenjiang China
| | - Xiaoping Shen
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
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23
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High catalytic activity and selectivity in hydrosilylation of new Pt(II) metallosupramolecular complexes based on ambidentate ligands. J Catal 2019. [DOI: 10.1016/j.jcat.2019.03.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Synthesis, structure and magnetic properties of Ni(II) and Cu(II), [2 × 2] grid complexes of pyrimidine-based symmetric ditopic ligands. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Abstract
Supramolecular metallogrid complexes are metalloclusters involving metal ions in planar array arrangements and organic ligands in perpendicular arrangements at each corner of the metal sites. Such essentially metal ion arrays have attracted great attention in the last three decades owing to their variety of interesting optical, electronic and magnetic properties. Among them, metallogrids containing more than one type of metal, that is heterometallic grids, are rare but have more potential to engineer a higher level functionality into one molecule. However, until now, only dozens of heterometallic grids have been reported without any specific review. Herein, we aim to give an overview of the assembly strategies, the physicochemical properties, and finally some perspectives on the future development of heterometallic grids.
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Affiliation(s)
- Qianqian Yang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
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26
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Shiga T, Sato Y, Tachibana M, Sato H, Matsumoto T, Sagayama H, Kumai R, Murakami Y, Newton GN, Oshio H. Carboxylic Acid Functionalized Spin-Crossover Iron(II) Grids for Tunable Switching and Hybrid Electrode Fabrication. Inorg Chem 2018; 57:14013-14017. [PMID: 30379073 DOI: 10.1021/acs.inorgchem.8b01856] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two carboxyl-substituted iron(II) grids, one protonated, [Fe4(HL)4](BF4)4·4MeCN·AcOEt (1), and the other deprotonated, [Fe4(L)4]·DMSO·EtOH (2), where H2L = 4-{4,5-bis[6-(3,5-dimethylpyrazol-1-yl)pyrid-2-yl]-1 H-imidazol-2-yl}benzoic acid, were synthesized. Single-crystal X-ray structure analyses reveal that both complexes have a tetranuclear [2 × 2] grid structure. 1 formed one-dimensional chains through intermolecular hydrogen bonds between the carboxylic acid units of neighboring grids, while 2 formed two-dimensional layers stabilized by π-π-stacking interactions. 1 showed spin transition between the 3HS-1LS and 1.5HS-2.5LS states around 200 K, while 2 showed spin-crossover between the 4LS and 2LS-2HS states above 300 K. A modified indium-tin oxide (ITO) electrode was fabricated by soaking the ITO in a solution of 1. The resultant electrode showed reversible redox waves attributed to the original redox processes of iron(II)/iron(III).
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Affiliation(s)
- Takuya Shiga
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Yamato Sato
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Minami Tachibana
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Hiroki Sato
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Takuto Matsumoto
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Hajime Sagayama
- Photon Factory and Condensed Matter Research Center, Institute of Materials Structure Science , High Energy Accelerator Research Organization , Oho 1-1 , Tsukuba , Ibaraki 305-0801 , Japan
| | - Reiji Kumai
- Photon Factory and Condensed Matter Research Center, Institute of Materials Structure Science , High Energy Accelerator Research Organization , Oho 1-1 , Tsukuba , Ibaraki 305-0801 , Japan
| | - Youichi Murakami
- Photon Factory and Condensed Matter Research Center, Institute of Materials Structure Science , High Energy Accelerator Research Organization , Oho 1-1 , Tsukuba , Ibaraki 305-0801 , Japan
| | - Graham N Newton
- GSK Carbon Neutral Laboratories for Sustainable Chemistry , The University of Nottingham , Nottingham NG7 2TU , U.K
| | - Hiroki Oshio
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
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