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Sato H. A new horizon for vibrational circular dichroism spectroscopy: a challenge for supramolecular chirality. Phys Chem Chem Phys 2020; 22:7671-7679. [DOI: 10.1039/d0cp00713g] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The development of the solid state and time-step VCD methods opened a new horizon to reveal the mechanism of chirality amplification from microscopic to supramolecular scales.
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Affiliation(s)
- Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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2
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Goto Y, Watanabe Y, Noboriguchi A, Yoshida J, Mori S, Sato H. Chiral tectonics toward square planar tetranuclear Pd(ii) complexes: propagation of axial chirality through a long molecular axis. Dalton Trans 2019; 48:10138-10144. [DOI: 10.1039/c9dt01913h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetranuclear Pd(ii)complexes were synthesized according to the molecular tectonics approach. A focus was how the elongation of a molecular axis affected the chiro-optical properties of a molecule with axial chirality.
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Affiliation(s)
- Yutaro Goto
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Yutaka Watanabe
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Aoki Noboriguchi
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Jun Yoshida
- Department of Chemistry
- Kitasato University
- Sagamihara
- Japan
| | - Shigeki Mori
- Advanced Research Support Center
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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3
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Chiral Tectonics: VCD and ECD Application for Epimerization of a Star-Burst Tetranuclear Complex with a Labile Central Core. INORGANICS 2018. [DOI: 10.3390/inorganics6030070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The present article reports the application of vibrational circular dichroism (VCD) and temperature-dependent electronic circular dichroism (ECD) methods to reveal the dynamical aspects of a star-burst tetranuclear metal complex with a labile central core in a solution. One-handed chiral inert tecton, ∆- or Λ-[Ru(III)(acac)2(taetH)] (acacH = acetylacetone, taetH2 = tetraacetylethane), was prepared by reacting [Ru(acac)3] with taetH2 in solid at 120 °C. The ∆Λ-pair of pure enantiomers was obtained chromatographically. On adding Al(ClO4)3 to its enantiopure solution, three units of one-handed tecton were assembled spontaneously around an aluminum(III) ion to form a star-burst tetranuclear complex, [{∆- or Λ-Ru(acac)2(taet)}3Al(III)]. The VCD spectrum recorded on the CDCl3 solution of the complex showed that the central chirality around an Al(III) ion took dominantly the absolute configuration antipodal to those of peripheral Ru(III) units at the temperature lower than −10 °C. The complex underwent interconversion between the ∆- and Λ-configurations around a central Al(III) core (or epimerization) in solution. The activation energy barrier was determined from the time courses of ECD spectra in CHCl3 and CH3OH.
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Sato H, Tamura K, Takimoto K, Yamagishi A. Solid state vibrational circular dichroism towards molecular recognition: chiral metal complexes intercalated in a clay mineral. Phys Chem Chem Phys 2018; 20:3141-3147. [DOI: 10.1039/c7cp05114j] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The solid state VCD method revealed chirality effects on the intermolecular interaction between Δ- or Λ-[Ru(phen)3]2+ and R or S-BINOL intercalated in a montmorillonite clay.
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Affiliation(s)
- Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Kenji Tamura
- National Institute for Materials Science
- Tsukuba 305-0044
- Japan
| | - Kazuyoshi Takimoto
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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Sato H, Takimoto K, Mori H, Yamagishi A. Stereoselective interactions as manifested by vibrational circular dichroism spectra: the interplay between chiral metal complexes co-adsorbed in a montmorillonite clay. Phys Chem Chem Phys 2018; 20:25421-25427. [DOI: 10.1039/c8cp04753g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solid state VCD is applied for intercalated metal complexes.
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Affiliation(s)
- Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Kazuyoshi Takimoto
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Hirotoshi Mori
- Faculty of Science
- Department of Chemistry
- Ochanomizu University
- Tokyo 112-8610
- Japan
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6
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Takimoto K, Watanabe Y, Mori S, Sato H. Vibrational circular dichroism and single crystal X-Ray diffraction analyses of [Ir(bzq)2(phen)]+ (bzq = benzo[h]quinoline; phen = 1,10-phenanthroline): absolute configuration and role of CH–π interaction in molecular packing. Dalton Trans 2017; 46:4397-4402. [DOI: 10.1039/c7dt00606c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The absolute configuration of a cationic iridium(iii) complex was determined in solution and solid by vibrational circular dichroism and X-ray diffraction analyses.
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Affiliation(s)
- Kazuyoshi Takimoto
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Yutaka Watanabe
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Shigeki Mori
- Advanced Research Support Center
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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Dezhahang Z, Poopari MR, Cheramy J, Xu Y. Conservation of Helicity in a Chiral Pyrrol-2-yl Schiff-Base Ligand and Its Transition Metal Complexes. Inorg Chem 2015; 54:4539-49. [DOI: 10.1021/acs.inorgchem.5b00386] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zahra Dezhahang
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | | | - Joseph Cheramy
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Yunjie Xu
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Merten C, Berger CJ, McDonald R, Xu Y. Evidence of Dihydrogen Bonding of a Chiral Amine-Borane Complex in Solution by VCD Spectroscopy. Angew Chem Int Ed Engl 2014; 53:9940-3. [DOI: 10.1002/anie.201403690] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/15/2014] [Indexed: 11/10/2022]
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10
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Merten C, Berger CJ, McDonald R, Xu Y. Nachweis von Diwasserstoffbrücken in einem chiralen Amin-Boran-Komplex in Lösung mittels VCD-Spektroskopie. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403690] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Merten C, Xu Y. A comparative vibrational CD study of homo- and heteroleptic complexes of the type [Cu(trans-1,2-diaminocyclohexane)2L](ClO4)2. Dalton Trans 2013; 42:10572-8. [DOI: 10.1039/c3dt50459j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Dezhahang Z, Poopari MR, Xu Y. Vibrational Circular Dichroism Spectroscopy of Three Multidentate Nitrogen Donor Ligands: Conformational Flexibility and Solvent Effects. Chem Asian J 2013; 8:1205-12. [DOI: 10.1002/asia.201300070] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Indexed: 11/08/2022]
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13
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Sato H, Yamagishi A. VCD studies on chiral characters of metal complex oligomers. Int J Mol Sci 2013; 14:964-78. [PMID: 23296273 PMCID: PMC3565301 DOI: 10.3390/ijms14010964] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 12/27/2012] [Accepted: 12/31/2012] [Indexed: 12/31/2022] Open
Abstract
The present article reviews the results on the application of vibrational circular dichroism (VCD) spectroscopy to the study of stereochemical properties of chiral metal complexes in solution. The chiral characters reflecting on the vibrational properties of metal complexes are revealed by measurements of a series of β-diketonato complexes with the help of theoretical calculation. Attention is paid to the effects of electronic properties of a central metal ion on vibrational energy levels or low-lying electronic states. The investigation is further extended to the oligomers of β-diketonato complex units. The induction of chiral structures is confirmed by the VCD spectra when chiral inert moieties are connected with labile metal ions. These results have demonstrated how VCD spectroscopy is efficient in revealing the static and dynamic properties of mononuclear and multinuclear chiral metal complexes, which are difficult to clarify by means of other spectroscopes.
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Affiliation(s)
- Hisako Sato
- Department of Chemistry, Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +81-89-927-9599; Fax: +81-89-927-9590
| | - Akihiko Yamagishi
- Department of Chemistry, Toho University, Funabashi 274-8510, Japan; E-Mail:
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Szilvágyi G, Brém B, Báti G, Tölgyesi L, Hollósi M, Vass E. Dirhodium complexes: determination of absolute configuration by the exciton chirality method using VCD spectroscopy. Dalton Trans 2013; 42:13137-44. [DOI: 10.1039/c3dt51567b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Sato H, Mori Y, Yamagishi A. Conformational change of a chiral Schiff base Ni(ii) complex with a binaphthyl moiety: application of vibrational circular dichroism spectroscopy. Dalton Trans 2013; 42:6873-8. [DOI: 10.1039/c3dt00112a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Sato H, Mori Y, Kitazawa T, Yamagishi A. Inversion of axial chirality in coordinated bis-β-diketonato ligands. Dalton Trans 2013; 42:232-7. [DOI: 10.1039/c2dt31746j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Kaizaki S, Shirotani D, Sato H. A novel correlation of vibrational circular dichroism spectra with the electronic ground state for Δ-SAPR-8-cesium-tetrakis((+)-heptafluorobutyryl-camphorato)lanthanide(iii) complexes. Phys Chem Chem Phys 2013; 15:9513-5. [DOI: 10.1039/c3cp50509j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Sato H, Morimoto K, Mori Y, Shinagawa Y, Kitazawa T, Yamagishi A. Axially chiral monomeric and dimeric square planar Pd(ii) complexes and their application to chiral tectonics. Dalton Trans 2013; 42:7579-85. [DOI: 10.1039/c3dt50420d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Merten C, Hiller K, Xu Y. Effects of electron configuration and coordination number on the vibrational circular dichroism spectra of metal complexes of trans-1,2-diaminocyclohexane. Phys Chem Chem Phys 2012; 14:12884-91. [DOI: 10.1039/c2cp42221b] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dezhahang Z, Merten C, Poopari MR, Xu Y. Vibrational circular dichroism spectroscopy of two chiral binaphthyl diphosphine ligands and their palladium complexes in solution. Dalton Trans 2012; 41:10817-24. [DOI: 10.1039/c2dt31184d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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