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Asahara M, Kurimoto H, Nakamizu M, Hattori S, Shinozaki K. H/D solvent isotope effects on the photoracemization reaction of enantiomeric the tris(2,2′-bipyridine)ruthenium(ii) complex and its analogues. Phys Chem Chem Phys 2020; 22:6361-6369. [DOI: 10.1039/c9cp06758b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work assessed solvent isotope effects on the photoracemization rate and emission lifetime for [Ru(bpy)3]2+ (bpy = 2,2′-bipyridine) in water.
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Affiliation(s)
- Masahiro Asahara
- Department of Materials Science
- Graduate School of Nanobioscience
- Yokohama City University
- Kanazawa-ku
- Japan
| | - Haruhiko Kurimoto
- Department of Materials Science
- Graduate School of Nanobioscience
- Yokohama City University
- Kanazawa-ku
- Japan
| | - Masato Nakamizu
- Department of Materials Science
- Graduate School of Nanobioscience
- Yokohama City University
- Kanazawa-ku
- Japan
| | - Shingo Hattori
- Department of Materials Science
- Graduate School of Nanobioscience
- Yokohama City University
- Kanazawa-ku
- Japan
| | - Kazuteru Shinozaki
- Department of Materials Science
- Graduate School of Nanobioscience
- Yokohama City University
- Kanazawa-ku
- Japan
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Kobayashi Y, Hoshino M, Kameda T, Kobayashi K, Akaji K, Inuki S, Ohno H, Oishi S. Use of a Compact Tripodal Tris(bipyridine) Ligand to Stabilize a Single-Metal-Centered Chirality: Stereoselective Coordination of Iron(II) and Ruthenium(II) on a Semirigid Hexapeptide Macrocycle. Inorg Chem 2018; 57:5475-5485. [PMID: 29634246 DOI: 10.1021/acs.inorgchem.8b00416] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Fe(II)-coordinating hexapeptides containing three 2,2'-bipyridine moieties as side chains were designed and synthesized. A cyclic hexapeptide having three [(2,2'-bipyridin)-5-yl]-d-alanine (d-Bpa5) residues, in which d-Bpa5 and Gly are alternately arranged with 3-fold rotational symmetry, coordinated with Fe(II) to form a 1:1 octahedral Fe(II)-peptide complex with a single facial-Λ configuration of the metal-centered chirality. NMR spectroscopy and molecular dynamics simulations revealed that the Fe(II)-peptide complex has an apparent C3-symmetric conformations on the NMR time scale, while the peptide backbone is subject to dynamic conformational exchange between three asymmetric β/γ conformations and one C3-symmetric γ/γ/γ conformation. The semirigid cyclic hexapeptide preferentially arranged these conformations of the small octahedral Fe(II)-bipyridine complex, as well as the Ru(II) congener, to underpin the single configuration of the metal-centered chirality.
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Affiliation(s)
- Yuka Kobayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Masaru Hoshino
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Tomoshi Kameda
- Artificial Intelligence Research Center , National Institute of Advanced Industrial Science and Technology (AIST) , 2-4-7 Aomi , Koutou-ku, Tokyo 135-0064 , Japan
| | - Kazuya Kobayashi
- Kyoto Pharmaceutical University , Yamashina-ku , Kyoto 607-8412 , Japan
| | - Kenichi Akaji
- Kyoto Pharmaceutical University , Yamashina-ku , Kyoto 607-8412 , Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
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Aihara Y, Sato K, Shinozaki K. Optical Resolution, Determination of Absolute Configuration, and Photoracemization of cis-RuL2(CN)2 (L = 2,2′-Bipyridine and Its Analogues). Inorg Chem 2016; 55:8387-95. [DOI: 10.1021/acs.inorgchem.6b00772] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yusuke Aihara
- Department of Material Science,
Graduate School of Nanobioscience, Yokohama City University, 22-2
Seto, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Kyohei Sato
- Department of Material Science,
Graduate School of Nanobioscience, Yokohama City University, 22-2
Seto, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Kazuteru Shinozaki
- Department of Material Science,
Graduate School of Nanobioscience, Yokohama City University, 22-2
Seto, Kanazawa-ku, Yokohama 236-0027, Japan
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Ke D, Zhan C, Li ADQ, Yao J. Morphological Transformation between Nanofibers and Vesicles in a Controllable Bipyridine-Tripeptide Self-Assembly. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006897] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ke D, Zhan C, Li ADQ, Yao J. Morphological Transformation between Nanofibers and Vesicles in a Controllable Bipyridine-Tripeptide Self-Assembly. Angew Chem Int Ed Engl 2011; 50:3715-9. [DOI: 10.1002/anie.201006897] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Indexed: 11/11/2022]
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Kobayashi H, Kaizu Y, Matsuzawa H, Sekino H, Torii Y. Electronic transfer between ligands in the tris(2,2′-bipyridine) complexes consisting of monoanion radicals. Mol Phys 2006. [DOI: 10.1080/00268979300100611] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Hiroshi Kobayashi
- a Department of Chemistry , Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo , 152 , Japan
- b Department of Chemistry , Kitasato University , Kitasato 1-15-1, Sagamihara, Kanagawa , 228 , Japan
| | - Youkoh Kaizu
- a Department of Chemistry , Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo , 152 , Japan
| | - Hideyo Matsuzawa
- a Department of Chemistry , Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo , 152 , Japan
- b Department of Chemistry , Kitasato University , Kitasato 1-15-1, Sagamihara, Kanagawa , 228 , Japan
| | - Hideo Sekino
- a Department of Chemistry , Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo , 152 , Japan
- c Quantum Theory Project , University of Florida , Gainesville , Florida , 32611-2085 , USA
| | - Yasuo Torii
- d Laboratory of Chemistry , Faculty of Engineering, Yokohama National University , Tokiwadai, Hodogaya-ku, Yokohama , 240 , Japan
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Sakurai SI, Ohira A, Suzuki Y, Fujito R, Nishimura T, Kunitake M, Yashima E. Synthesis and property of helical poly(phenylacetylene)s bearing chiral ruthenium complexes and real space imaging of meso- and nanoscopic structures by atomic force microscopy. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20357] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kise KJ, Bowler BE. A ruthenium(II) tris(bipyridyl) amino acid: synthesis and direct incorporation into an alpha-helical peptide by solid-phase synthesis. Inorg Chem 2002; 41:379-86. [PMID: 11800628 DOI: 10.1021/ic010617x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of a ruthenium(II) tris(bipyridyl) amino acid is described along with its incorporation into a helix-forming peptide using standard solid-phase peptide synthesis methods. The physical properties of the metalloamino acid separately and in the context of the peptide are reported. The electrochemical potential, absorption spectrum, emission and excitation spectra, and emission lifetime data for the ruthenium(II) tris(bipyridyl) amino acid are similar to those of ruthenium(II) tris(bipyridine), indicating that the amino acid functionality introduced on one of the bipyridine rings does not strongly perturb the properties of the metal complex. The ruthenium(II) tris(bipyridyl) amino acid is amenable to direct incorporation into a synthetic peptide using solid-phase methods and BOC/benzyl chemistry. The 22 amino acid alanine-based peptide produced is 67% helical at 0 degrees C in aqueous buffer, as measured by circular dichroism spectroscopy. The 2,2,2-trifluorethanol helix induction curve and the temperature dependence of the helicity are typical for alanine-based peptides. The Lifson-Roig helix propagation parameter, w, derived from circular dichroism and NMR-monitored kinetic hydrogen-deuterium exchange is 0.5 +/- 0.1 at 0 degrees C, indicating a moderate helix propensity for this metalloamino acid.
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Affiliation(s)
- Kenneth J Kise
- Department of Chemistry and Biochemistry, University of Denver, 2190 East Iliff Avenue, Denver, Colorado 80208, USA
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Mürner H, von Zelewsky A, Stoeckli-Evans H. Octahedral Complexes with Predetermined Helical Chirality: Xylene-Bridged Bis([4,5]-pineno-2,2'-bipyridine) Ligands (Chiragen[o-, m-, p-xyl]) with Ruthenium(II). Inorg Chem 1996; 35:3931-3935. [PMID: 11666586 DOI: 10.1021/ic951539e] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tetradentate ligands are obtained by joining two optically active [4,5]-pineno-2,2'-bipyridine molecules in a stereoselective reaction, where two new stereogenic centers are created. These ligands are new members of the chiragen family that form OC-6 complexes with predetermined helical chirality. Ru(II) complexes with 4,4'-dimethyl-2,2'-bipyridine occupying the remaining coordination sites have been synthesized with all three new ligands. Characterization of the ruthenium complexes by NMR spectroscopy confirm C(2)-symmetric structures in solution. CD spectra show that the complexes are composed of only one helical diastereomer with the expected absolute configurations. In addition, a strong chiral amplification is observed, if precursors of low enantiomeric purity are used. This is due to the inability of ligands that are heterochiral in the two bpy moieties to coordinate to one center. X-ray structural data were obtained for the complex Delta-[RuCG[o-xyl](4,4'-DMbpy)](PF(6))(2). Crystal data (Mo Kalpha, 298 K): trigonal, space group R3, a = 52.986(4) Å, c = 10.545(1) Å, V = 25639(4) Å(3), Z = 18, R1 = 0.087, and wR2 = 0.0986 for 2609 observed reflections.
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Affiliation(s)
- Hansruedi Mürner
- Institute of Inorganic Chemistry, University of Fribourg, Pérolles, CH-1700 Fribourg, Switzerland, and Institute of Chemistry, University of Neuchâtel, Avenue de Bellevaux 51, CH-2000 Neuchâtel, Switzerland
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Noble B, Peacock RD. Absorption, Circular Dichroism, and Luminescence Spectroscopy of Electrogenerated Delta-[Ru(bipy)(3)](+/0/)(-) and Delta-[Os(bipy)(3)](+/0/)(-) (bipy = 2,2'-Bipyridine). Inorg Chem 1996; 35:1616-1620. [PMID: 11666381 DOI: 10.1021/ic951096e] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The electronic absorption and circular dichroism (CD) spectra of the complexes produced by the one, two, and three electron reduction of Delta-[Ru(bipy)(3)](2+) and Delta-[Os(bipy)(3)](2+) are reported. The CD spectra give unequivocal proof that the added electrons are localized on individual bipiridine ligands and thus that the complexes are correctly formulated [M(bipy)(2)(bipy(-))](+), [M(bipy)(bipy(-))(2)](0), and [M(bipy(-))(3)](-). The absorption spectra of the triply reduced species [M(bipy(-))(3)](-) (M = Ru, Os) are compared to those of the Fe(II) and Ir(III) analogs. The luminescence spectra of the two triply reduced complexes [Ru(bipy(-))(3)](-) and [Os(bipy(-))(3)](-). are also presented. The MLCT luminescence found in the parent complexes is completely quenched and is replaced by a weak luminescence attributed to the pi(10) --> pi(7) transition of the (coordinated) [bipy](-) ion.
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Affiliation(s)
- Brian Noble
- Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
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Electronic absorption and circular dichroism spectra of Δ-[Os(bipy)2(bipy−)]+, Δ-[Os(bipy)(bipy−)2]0 and Δ-[Os(bipy−)3]−. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0584-8539(94)80182-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lappin A, Marusak RA. Stereoselectivity in electron transfer reactions involving metal ion complexes. Coord Chem Rev 1991. [DOI: 10.1016/0010-8545(91)80004-w] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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