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Yoshimura T, Nagata K, Nakano M. Octahedral Hexanuclear Rhenium Cluster Dimers Bridged by Pyrazine or 4,4'-Bipyridine with 23- and 24-Electron Configurations. Inorg Chem 2024; 63:14913-14923. [PMID: 39069964 DOI: 10.1021/acs.inorgchem.4c01321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
New pyrazine (pz)- and 4,4'-bipyridine (4,4'-bpy)-bridged octahedral hexanuclear rhenium(III) cluster dimers, [{Re6(μ3-S)8Cl5}2(μ-L)]6- (L = pz, [1]6-; L = 4,4'-bpy, [2]6-), with 2 × 24 d-electrons {Re6(24e)}2 were obtained in a single-step reaction via photoirradiation of [Re6(μ3-S)8Cl6]4- with L in a 2:1 ratio at room temperature. The {Re6(23e)}2 dimers, [{Re6(μ3-S)8Cl5}2(μ-L)]4- (L = pz, [1']4-; L = 4,4'-bpy, [2']4-), were synthesized through two-electron oxidation of [1]6- and [2]6-, respectively. The single-crystal X-ray structures of [1]6- and [1']4- were determined, revealing structural distortion of the Re6 core of [1']4- due to the Jahn-Teller effect. The cyclic voltammograms of [1]6- and [2]6- showed two steps of one-electron redox processes attributable to Re6(23e)Re6(24e)/{Re6(24e)}2 and {Re6(23e)}2/Re6(23e)Re6(24e), respectively. The separation between the two redox potentials is small (0.056 V for [1]6- and 0.039 V for [2]6-). The magnetic susceptibilities of [1']4- and [2']4- were almost temperature-independent, with values of 2.98 and 2.85 μB, respectively, indicating paramagnetism. These results suggest weak electronic interaction between two cluster units bridged by pz or 4,4'-bpy in the intercluster mixed valence state. The compounds [1]6- and [2]6- show photoluminescence in the near-infrared region at 296 K in the solid state.
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Affiliation(s)
- Takashi Yoshimura
- Radioisotope Research Center, Institute for Radiation Sciences, Osaka University, Suita 565-0871, Japan
| | - Kojiro Nagata
- Core Facility Center, Osaka University, Toyonaka 560-0043, Japan
| | - Motohiro Nakano
- Research Center for Thermal and Entropic Science, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan
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Kirakci K, Shestopalov MA, Lang K. Recent developments on luminescent octahedral transition metal cluster complexes towards biological applications. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Yoshimura T, Nishizawa H, Nagata K, Ito A, Sakuda E, Ishizaka S, Kitamura N, Shinohara A. Tuning the Ground- and Excited-State Redox Potentials of Octahedral Hexanuclear Rhenium(III) Complexes by the Combination of Terminal Halide and N-Heteroaromatic Ligands. ACS OMEGA 2022; 7:26965-26982. [PMID: 35936475 PMCID: PMC9352233 DOI: 10.1021/acsomega.2c03834] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 07/08/2022] [Indexed: 05/27/2023]
Abstract
The present study reports that the ground- and excited-state Re6(23e)/Re6(24e) redox potentials of an octahedral hexanuclear rhenium(III) complex can be controlled by systematically changing the number and type of the N-heteroaromatic ligand (L) and the number of chloride ions at the six terminal positions. Photoirradiation of [Re6(μ3-S)8Cl6]4- with an excess amount of L afforded a mono-L-substituted hexanuclear rhenium(III) complex, [Re6(μ3-S)8Cl5(L)]3- (L = 4-dimethylaminopyridine (dmap), 3,5-lutidine (lut), 4-methylpyridine (mpy), pyridine (py), 4,4'-bipyridine (bpy), 4-cyanopyridine (cpy), and pyrazine (pz)). The bis- and tris-lut-substituted complexes, trans- and cis-[Re6(μ3-S)8Cl4(lut)2]2- and mer-[Re6(μ3-S)8Cl3(lut)3]-, were synthesized by the reaction of [Re6(μ3-S)8Cl6]3- with an excess amount of lut in refluxed N,N-dimethylformamide. The mono-L-substituted complexes showed one-electron redox processes assignable to E 1/2[Re6(23e)/Re6(24e)] = 0.49-0.58 V versus Ag/AgCl. The ground-state oxidation potentials were linearly correlated with the pK a of the N-heteroaromatic ligand [pK a(L)], the 1H NMR chemical shift of the ortho proton on the coordinating ligand, and the Hammett constant (σ) of the pyridyl-ligand substituent. The series of [Re6(μ3-S)8X6-n (L) n ] n-4 complexes (n = 0, X = Cl, Br, I, or NCS; n = 1-3, X = Cl) showed a linear correlation with the sum of the Lever electrochemical parameters at the six terminal ligands (ΣE L). The cyclic voltammograms of the mono-L-substituted complexes (L = bpy, cpy, and pz) showed one-electron redox waves assignable to E 1/2(L0/L-) = -1.28 to -1.48 V versus Ag/AgCl. Two types of photoluminescences were observed for the complexes, originating from the cluster core-centered excited triplet state (3CC) for L = dmap, lut, mpy, and py and from the metal-to-ligand charge-transfer excited triplet state (3MLCT) for L = bpy, cpy, and pz. The complexes with the 3CC character exhibited emission features and photophysical properties similar to those of ordinary hexanuclear rhenium complexes. The emission maximum wavelength of the complexes with 3MLCT shifted to the longer wavelength in the order L = 4-phenylpyridine (ppy), bpy, pz, and cpy, which agreed with the difference between E 1/2[Re6(23e)/Re6(24e)] and E 1/2(L0/L-). The calculated oxidation potential of the excited hexanuclear rhenium complex with the 3CC character was linearly correlated with pK a(L), σ, and ΣE L. The ground- and excited-state oxidation potentials were finely tuned by the combination of halide and L ligands at the terminal positions.
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Affiliation(s)
- Takashi Yoshimura
- Radioisotope
Research Center, Institute for Radiation Sciences, Osaka University, Suita 565-0871, Japan
| | - Hayato Nishizawa
- Department
of Chemistry, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan
| | - Kojiro Nagata
- Radioisotope
Research Center, Institute for Radiation Sciences, Osaka University, Suita 565-0871, Japan
| | - Akitaka Ito
- School
of Environmental Science and Engineering, Kochi University of Technology, Kochi 782-8502, Japan
| | - Eri Sakuda
- Division
of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Nagasaki 852-8521, Japan
| | - Shoji Ishizaka
- Graduate
School of Advanced Science and Engineering, Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Noboru Kitamura
- Department
of Chemistry, Faculty of Science, Hokkaido
University, Sapporo 060-0810, Japan
- Toyota
Physical and Chemical Research Institute, Nagakute 480-1192, Aichi, Japan
| | - Atsushi Shinohara
- Radioisotope
Research Center, Institute for Radiation Sciences, Osaka University, Suita 565-0871, Japan
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Thermally Controlled Synthesis of Octahedral Rhenium Clusters with 4,4′-Bipyridine and CN− Apical Ligands. Symmetry (Basel) 2021. [DOI: 10.3390/sym13112187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The selective preparation, structural and spectroscopic study of two new rhenium cluster complexes trans-[Re6S8(bpy)4(CN)2] and trans-[Re6S8(bpy)2(CN)4]2− (bpy = 4,4′-bipyridine) obtained by reactions of corresponding hexarhenium cyanohalides with molten bpy are reported. The complexes were crystallized as solvates, displaying supramolecular structures based on cluster units linked by numerous weak interactions with bpy molecules. The molecular compound trans-[Re6S8(bpy)4(CN)2] (1) is insoluble in water and common organic solvents, while the ionic compound trans-Cs1.7K0.3[Re6S8(bpy)2(CN)4] (2) is somewhat soluble in DMSO, DMF and N-methylpyrrolidone. The presence of the redox-active ligand bpy leads to the occurrence of multi-electron reduction transitions in a solution of 2 at moderate potential values. The ambidentate CN− ligand is the secondary functional group, which has potential for the synthesis of coordination polymers based on the new cluster complexes. In addition, both new compounds show a weak red luminescence, which is characteristic of complexes with a {Re6S8}2+ cluster core.
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Supramolecular Frameworks Based on Rhenium Clusters Using the Synthons Approach. Molecules 2021; 26:molecules26092662. [PMID: 34062890 PMCID: PMC8125787 DOI: 10.3390/molecules26092662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/19/2021] [Accepted: 04/28/2021] [Indexed: 11/17/2022] Open
Abstract
The reaction of the K4[{Re6Si8}(OH)a6]·8H2O rhenium cluster salt with pyrazine (Pz) in aqueous solutions of alkaline or alkaline earth salts at 4 °C or at room temperature leads to apical ligand exchange and to the formation of five new compounds: [trans-{Re6Si8}(Pz)a2(OH)a2(H2O)a2] (1), [cis-{Re6Si8}(Pz)a2(OH)a2(H2O)a2] (2), (NO3)[cis-{Re6Si8}(Pz)a2(OH)a(H2O)a3](Pz)·3H2O (3), [Mg(H2O)6]0.5[cis-{Re6Si8}(Pz)a2(OH)a3(H2O)a]·8.5H2O (4), and K[cis-{Re6Si8}(Pz)a2(OH)a3(H2O)a]·8H2O (5). Their crystal structures are built up from trans- or cis-[{Re6Si8}(Pz)a2(OH)a4-x(H2O)ax]x-2 cluster units. The cohesions of the 3D supramolecular frameworks are based on stacking and H bonding, as well as on H3O2-bridges in the cases of (1), (2), (4), and (5) compounds, while (3) is built from stacking and H bonding only. This evidences that the nature of the synthons governing the cluster unit assembly is dependent on the hydration rate of the unit.
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Muravieva VK, Gayfulin YM, Lappi TI, Dorcet V, Sukhikh TS, Lemoine P, Ryzhikov MR, Mironov YV, Cordier S, Naumov NG. Apical Cyanide Ligand Substitution in Heterometallic Clusters [Re
3
Mo
3
Q
8
(CN)
6
]
n
–
(Q = S, Se). Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Viktoria K. Muravieva
- Nikolaev Institute of Inorganic Chemistry SB RAS 3, Acad. Lavrentiev ave. Novosibirsk 630090 Russian Federation
- Univ. Rennes, CNRS ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226 Campus de Beaulieu Rennes F‐35000 France
| | - Yakov M. Gayfulin
- Nikolaev Institute of Inorganic Chemistry SB RAS 3, Acad. Lavrentiev ave. Novosibirsk 630090 Russian Federation
| | - Tatiana I. Lappi
- Nikolaev Institute of Inorganic Chemistry SB RAS 3, Acad. Lavrentiev ave. Novosibirsk 630090 Russian Federation
- Novosibirsk State University 2, Pirogova str. Novosibirsk 630090 Russian Federation
| | - Vincent Dorcet
- Univ. Rennes, CNRS ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226 Campus de Beaulieu Rennes F‐35000 France
| | - Taisiya S. Sukhikh
- Nikolaev Institute of Inorganic Chemistry SB RAS 3, Acad. Lavrentiev ave. Novosibirsk 630090 Russian Federation
- Novosibirsk State University 2, Pirogova str. Novosibirsk 630090 Russian Federation
| | - Pierric Lemoine
- Univ. Rennes, CNRS ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226 Campus de Beaulieu Rennes F‐35000 France
| | - Maxim R. Ryzhikov
- Nikolaev Institute of Inorganic Chemistry SB RAS 3, Acad. Lavrentiev ave. Novosibirsk 630090 Russian Federation
- Novosibirsk State University 2, Pirogova str. Novosibirsk 630090 Russian Federation
| | - Yuri V. Mironov
- Nikolaev Institute of Inorganic Chemistry SB RAS 3, Acad. Lavrentiev ave. Novosibirsk 630090 Russian Federation
- Novosibirsk State University 2, Pirogova str. Novosibirsk 630090 Russian Federation
| | - Stéphane Cordier
- Univ. Rennes, CNRS ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226 Campus de Beaulieu Rennes F‐35000 France
| | - Nikolay G. Naumov
- Nikolaev Institute of Inorganic Chemistry SB RAS 3, Acad. Lavrentiev ave. Novosibirsk 630090 Russian Federation
- Novosibirsk State University 2, Pirogova str. Novosibirsk 630090 Russian Federation
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Konovalov DI, Ivanov AA, Vorotnikov YA, Smolentsev AI, Eltsov IV, Efremova OA, Kitamura N, Mironov YV, Shestopalov MA. Octahedral chalcogenide rhenium cluster complexes with imidazole. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.03.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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First cyano-bridged coordination polymers based on N,N’-chelated Ag(I) ions and octahedral rhenium(III) chalcocyanide clusters exhibiting unusually long-lived photoluminescence. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.07.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ledneva A, Ferlay S, Naumov NG, Mauro M, Cordier S, Kyritsakas N, Hosseini MW. Hydrogen bonded networks based on hexarhenium( iii) chalcocyanide cluster complexes: structural and photophysical characterization. NEW J CHEM 2018. [DOI: 10.1039/c8nj02310g] [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
Two series of hydrogen bonded networks based on [Re6Qi8(CN)a6]4− (Q = S or Se) anionic clusters and amidinium cations are reported, structurally and spectroscopically analyzed.
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Affiliation(s)
- Alexandra Ledneva
- Nikolaev Institute of Inorganic Chemistry 3 Acad. Lavrentiev pr
- 630090 Novosibirsk
- Russia
| | - Sylvie Ferlay
- Molecular Tectonics Laboratory
- Université de Strasbourg, CNRS, CMC UMR 7140
- F-67000 Strasbourg
- France
| | - Nikolay G. Naumov
- Nikolaev Institute of Inorganic Chemistry 3 Acad. Lavrentiev pr
- 630090 Novosibirsk
- Russia
- Novosibirsk State University 2 Pirogova Str
- 630090 Novosibirsk
| | - Matteo Mauro
- Molecular Tectonics Laboratory
- Université de Strasbourg, CNRS, CMC UMR 7140
- F-67000 Strasbourg
- France
| | - Stéphane Cordier
- Univ Rennes
- CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- France
| | - Nathalie Kyritsakas
- Molecular Tectonics Laboratory
- Université de Strasbourg, CNRS, CMC UMR 7140
- F-67000 Strasbourg
- France
| | - Mir Wais Hosseini
- Molecular Tectonics Laboratory
- Université de Strasbourg, CNRS, CMC UMR 7140
- F-67000 Strasbourg
- France
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Shestopalov MA, Zubareva KE, Khripko OP, Khripko YI, Solovieva AO, Kuratieva NV, Mironov YV, Kitamura N, Fedorov VE, Brylev KA. The first water-soluble hexarhenium cluster complexes with a heterocyclic ligand environment: synthesis, luminescence, and biological properties. Inorg Chem 2014; 53:9006-13. [PMID: 25142977 DOI: 10.1021/ic500553v] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The hexarhenium cluster complexes with benzotriazolate apical ligands [{Re6(μ3-Q)8}(BTA)6](4-) (Q = S, Se; BTA = benzotriazolate ion) were obtained by the reaction of [{Re6(μ3-Q)8}(OH)6](4-) with molten 1H-BTA (1H-benzotriazole). The clusters were crystallized as potassium salts and characterized by X-ray single-crystal diffraction, elemental analyses, and UV-vis and luminescence spectroscopy. In addition, their cellular uptake and toxicity were evaluated. It was found that both clusters exhibited luminescence with high lifetimes and quantum yield values; they were taken up by the cells illuminating them under UV irradiation and, at the same time, did not exhibit acute cytotoxic effects.
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Affiliation(s)
- Michael A Shestopalov
- Nikolaev Institute of Inorganic Chemistry SB RAS , 3 Acad. Lavrentiev Prosp., 630090 Novosibirsk, Russia
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Shestopalov MA, Ivanov AA, Smolentsev AI, Mironov YV. Crystal structure of the octahedral cluster complex trans-[{Re6S8}(pyz)4I2]·2pyz. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476614010235] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Mironov YV, Brylev KA, Smolentsev AI, Ermolaev AV, Kitamura N, Fedorov VE. New mixed-ligand cyanohydroxo octahedral cluster complex trans-[Re6S8(CN)2(OH)4]4−, its luminescence properties and chemical reactivity. RSC Adv 2014. [DOI: 10.1039/c4ra10697k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new mixed-ligand anionic cluster complex trans-[Re6S8(CN)2(OH)4]4− has been synthesized and characterized by different physical methods. In addition, two representative reactions confirming the composition and structure of the anion have been carried out.
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Affiliation(s)
- Yuri V. Mironov
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 630090 Novosibirsk, Russia
- Novosibirsk State University
- 630090 Novosibirsk, Russia
| | - Konstantin A. Brylev
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 630090 Novosibirsk, Russia
- Novosibirsk State University
- 630090 Novosibirsk, Russia
| | - Anton I. Smolentsev
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 630090 Novosibirsk, Russia
- Novosibirsk State University
- 630090 Novosibirsk, Russia
| | - Andrey V. Ermolaev
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 630090 Novosibirsk, Russia
| | - Nobory Kitamura
- Department of Chemistry
- Graduate School of Science
- Hokkaido University
- 060-0810 Sapporo, Japan
| | - Vladimir E. Fedorov
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 630090 Novosibirsk, Russia
- Novosibirsk State University
- 630090 Novosibirsk, Russia
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