1
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Shahid N, Singh AK. Unravelling the kinetics of electro- and photochemical S → O linkage isomerization in Ru(II)-NHC-DMSO complexes utilised for photoinduced substitution reactions. Dalton Trans 2024; 53:12662-12675. [PMID: 39012321 DOI: 10.1039/d4dt01200c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Our recently reported Ru(III)-NHC complexes 1a and 1b were utilized as suitable precursors to prepare new Ru(II)-NHC-(DMSO)2 complexes 2a and 2b. Complexes 2a and 2b reacted with 2,2'-bipyridine to give complexes 3a and 3b, respectively, with substitution of only one of the DMSO ligands. All new complexes were characterized using various spectroscopic techniques and the molecular structures of 2a and 3a were determined using single-crystal X-ray diffraction technique. Complexes 2a, 2b, 3a, and 3b showed the S → O linkage isomerization of the DMSO ligand upon oxidation of the Ru centre from +II to +III, as confirmed by the thermodynamic and kinetic data obtained from cyclic voltammetry experiments. It was observed that in the bisdimethylsulfoxide complexes 2a and 2b, only one DMSO ligand isomerized, which was further corroborated by the computational studies performed to optimize the geometry of the possible linkage isomers of complexes 2a and 3a in +2 and +3 oxidation states, whereas complexes 3a and 3b showed a high preference for the O-bound isomer in the Ru(III) redox state. The role of NHC in stabilizing the mixed isomer in complexes 2a and 2b and preventing the isomerization of both DMSO ligands coordinated to the Ru centre was studied; moreover, NHC provided good solvent compatibility for photochemical S → O isomerization in all the complexes. Taking advantages of the photoinduced linkage isomerization in 2a and 2b, the synthesis of 3a and 3b was revisited and performed using 2a and 2b, respectively, following a photoinduced substitution reaction in the presence of 2,2'-bipyridine. The kinetics of the reversion from the O-bound to S-bound isomer was found to follow the DMSO-assisted intermolecular S → O isomerization pathway.
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Affiliation(s)
- Nida Shahid
- Department of Chemistry, Indian Institute of Technology-Indore, Simrol, Khandwa Road, 433552, India.
| | - Amrendra K Singh
- Department of Chemistry, Indian Institute of Technology-Indore, Simrol, Khandwa Road, 433552, India.
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2
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Li JX, Xia YQ, Cheng LM, Feng X. One-pot hydrothermal synthesis of a mononuclear cobalt(II) complex and an organic-inorganic supramolecular adduct: Structures, properties and hirshfeld surface analyses. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123271] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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3
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Huang G. The crystal structure of 3-bromopicolinic acid, C 6H 4BrNO 2. Z KRIST-NEW CRYST ST 2021. [DOI: 10.1515/ncrs-2021-0343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C6H4BrNO2, orthorhombic, Pna21 (no. 33), a = 14.3975(12) Å, b = 7.5773(7) Å, c = 12.2500(10) Å, β = 90°, V = 1336.4(2) Å3, Z = 8, R
gt
(F) = 0.0281, wR
ref
(F
2) = 0.0536, T = 150(2) K.
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Affiliation(s)
- Guang Huang
- Sino-Portugal Belt and Road Joint Laboratory on Science of Cultural Heritage Conservation, City University of Macau , Macau , P. R. China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) , Zhuhai , Guangdong , P. R. China
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4
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Chirdon DN, Kelley SP, Hazari N, Bernskoetter WH. Comparative Coordination Chemistry of PNP and SNS Pincer Ruthenium Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Danielle N. Chirdon
- Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
| | - Steven P. Kelley
- Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
| | - Nilay Hazari
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Wesley H. Bernskoetter
- Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
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5
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Thapa Magar R, Breen DJ, Schrage BR, Ziegler CJ, Rack JJ. Slow 3MLCT Formation Prior to Isomerization in Ruthenium Carbene Sulfoxide Complexes. Inorg Chem 2021; 60:16120-16127. [PMID: 34672621 DOI: 10.1021/acs.inorgchem.1c01558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of photochromic complexes with general formulas of [Ru(bpy)2(NHC-SR)]2+ and [Ru(bpy)2(NHC-S(O)R)]2+ were prepared and investigated by X-ray crystallography, electrochemistry, and ultrafast transient absorption spectroscopy {where bpy is 2,2'-bipyridine and NHC-SR and NHC-S(O)R are chelating thioether (-SR) and chelating sulfoxide [-S(O)R] N-heterocyclic carbene (NHC) ligands}. The only differences between these complexes are the nature of the R group on the sulfur (Me vs Ph), the identity of the carbene (imidazole vs benzimidazole), and the number of linker atoms in the chelate (CH2 vs C2H4). A total of 13 structures are presented {four [Ru(bpy)2(NHC-SR)]2+ complexes, four [Ru(bpy)2(NHC-S(O)R)]2+ complexes, and five uncomplexed ligands}, and these reveal the expected coordination geometry as predicted from other spectroscopy data. The data do not provide insight into the photochemical reactivity of these compounds. These carbene ligands do impart stability with respect to ground state and excited state ligand substitution reactions. Bulk photolysis reveals that these complexes undergo efficient S → O isomerization, with quantum yields ranging from 0.24 to 0.87. The excited state reaction occurs with a time constant ranging from 570 ps to 1.9 ns. Electrochemical studies reveal an electron transfer-triggered isomerization, and voltammograms are consistent with an ECEC (electrochemical-chemical electrochemical-chemical) reaction mechanism. The carbene facilitates an unusually slow S → O isomerization and an unusally fast O → S isomerization. Temperature studies reveal a small and negative entropy of activation for the O → S isomerization, suggesting an associative transition state in which the sulfoxide simply slides along the S-O bond during isomerization. Ultrafast studies provide evidence of an active role of the carbene in the excited state dynamics of these complexes.
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Affiliation(s)
- Rajani Thapa Magar
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87111, United States
| | - Douglas J Breen
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87111, United States
| | - Briana R Schrage
- Knight Chemical Laboratory, Department of Chemistry, University of Akron, Akron, Ohio 44312-3601, United States
| | - Christopher J Ziegler
- Knight Chemical Laboratory, Department of Chemistry, University of Akron, Akron, Ohio 44312-3601, United States
| | - Jeffrey J Rack
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87111, United States
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6
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Avcı D, Saeedi Y, Başoğlu A, Dege N, Altürk S, Tamer Ö, Atalay Y. Novel Mn(II) and Zn(II) complexes of 6‐bromopicolinic acid as a potential optical material: Synthesis, spectral characterizations, linear, and nonlinear optical properties and density functional theory calculations. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Davut Avcı
- Faculty of Arts and Sciences, Department of Physics Sakarya University Sakarya Turkey
| | - Yalda Saeedi
- Faculty of Arts and Sciences, Department of Physics Sakarya University Sakarya Turkey
| | - Adil Başoğlu
- Faculty of Arts and Sciences, Department of Physics Sakarya University Sakarya Turkey
| | - Necmi Dege
- Faculty of Arts and Sciences, Department of Physics Ondokuz Mayıs University Samsun Turkey
| | - Sümeyye Altürk
- Faculty of Arts and Sciences, Department of Physics Sakarya University Sakarya Turkey
| | - Ömer Tamer
- Faculty of Arts and Sciences, Department of Physics Sakarya University Sakarya Turkey
| | - Yusuf Atalay
- Faculty of Arts and Sciences, Department of Physics Sakarya University Sakarya Turkey
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7
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Scholz MS, Bull JN, Carrascosa E, Adamson BD, Kosgei GK, Rack JJ, Bieske EJ. Linkage Photoisomerization of an Isolated Ruthenium Sulfoxide Complex: Sequential versus Concerted Rearrangement. Inorg Chem 2018; 57:5701-5706. [PMID: 29663799 DOI: 10.1021/acs.inorgchem.8b00871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ruthenium sulfoxide complexes undergo thermally reversible linkage isomerization of sulfoxide ligands from S- to O-bound in response to light. Here, we report photoisomerization action spectra for a ruthenium bis-sulfoxide molecular photoswitch, [Ru(bpy)2(bpSO)]2+, providing the first direct evidence for photoisomerization of a transition metal complex in the gas phase. The linkage isomers are separated and isolated in a tandem drift tube ion mobility spectrometer and exposed to tunable laser radiation provoking photoisomerization. Direct switching of the S,S-isomer to the O,O-isomer following absorption of a single photon is the predominant isomerization pathway in the gas phase, unlike in solution, where stepwise isomerization is observed with each sulfoxide ligand switching in turn. The change in isomerization dynamics is attributed to rapid vibrational quenching that suppresses isomerization in solution. Supporting electronic structure calculations predict the wavelengths and intensities of the peaks in the photoisomerization action spectra of the S,S- and S,O-isomers, indicating that they correspond to metal-to-ligand charge transfer (MLCT) and ligand-centered ππ* transitions.
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Affiliation(s)
- Michael S Scholz
- School of Chemistry , University of Melbourne , Parkville , Victoria 3010 , Australia
| | - James N Bull
- School of Chemistry , University of Melbourne , Parkville , Victoria 3010 , Australia
| | - Eduardo Carrascosa
- School of Chemistry , University of Melbourne , Parkville , Victoria 3010 , Australia
| | - Brian D Adamson
- School of Chemistry , University of Melbourne , Parkville , Victoria 3010 , Australia.,Sandia National Laboratories, Livermore , California 94550 , United States
| | - Gilbert K Kosgei
- Department of Chemistry and Chemical Biology , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Jeffrey J Rack
- Department of Chemistry and Chemical Biology , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Evan J Bieske
- School of Chemistry , University of Melbourne , Parkville , Victoria 3010 , Australia
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8
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Phapale D, Ghosh R, Das D. Solvent- and DNA-Controlled Phototriggered Linkage Isomerization in a Ruthenium Sulfoxide Complex Incorporating Dipyrido[3,2-a:2′,3′-c]phenazine (dppz). Inorg Chem 2017; 56:6310-6317. [DOI: 10.1021/acs.inorgchem.7b00412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daulat Phapale
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga,
Mumbai 400019, India
| | - Rajib Ghosh
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Dipanwita Das
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga,
Mumbai 400019, India
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9
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White JK, Schmehl RH, Turro C. An Overview Of Photosubstitution Reactions Of Ru(II) Imine Complexes And Their Application In Photobiology And Photodynamic Therapy. Inorganica Chim Acta 2017; 454:7-20. [PMID: 28042171 PMCID: PMC5193374 DOI: 10.1016/j.ica.2016.06.007] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This article is a short review that presents a short review of photosubstitution reactions of Ru(II) imine complexes and illustrates their use in the development of therapeutic agents. The review begins with an overview of the photophysical behavior and common photoreactions of Ru(II) imine complexes, with select examples from the literature since the 1960s. It is followed by a more detailed picture of the application of knowledge gained over the years in the development of Ru(II) complexes for photobiology and photodynamic therapy.
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Affiliation(s)
- Jessica K White
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210
| | | | - Claudia Turro
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210
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10
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Li H, Zhang L, Zheng L, Li X, Fan X, Zhao Y. Photoisomerization Mechanism of Ruthenium Sulfoxide Complexes: Role of the Metal-Centered Excited State in the Bond Rupture and Bond Construction Processes. Chemistry 2016; 22:14285-92. [DOI: 10.1002/chem.201602441] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Huifang Li
- Key Laboratory of Organo-Pharmaceutical Chemistry; Gannan Normal University; Ganzhou 341000 P. R. China
| | - Lisheng Zhang
- Key Laboratory of Organo-Pharmaceutical Chemistry; Gannan Normal University; Ganzhou 341000 P. R. China
| | - lvyin Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry; Gannan Normal University; Ganzhou 341000 P. R. China
| | - Xun Li
- Key Laboratory of Organo-Pharmaceutical Chemistry; Gannan Normal University; Ganzhou 341000 P. R. China
| | - Xiaolin Fan
- Key Laboratory of Organo-Pharmaceutical Chemistry; Gannan Normal University; Ganzhou 341000 P. R. China
| | - Yi Zhao
- State Key Laboratory of Physical Chemistry of Solid Surfaces; Xiamen University; Xiamen 361005 P. R. China
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11
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Bera S, Mondal S, Maity S, Weyhermüller T, Ghosh P. Radical and Non-Radical States of the [Os(PIQ)] Core (PIQ = 9,10-Phenanthreneiminoquinone): Iminosemiquinone to Iminoquinone Conversion Promoted o-Metalation Reaction. Inorg Chem 2016; 55:4746-56. [DOI: 10.1021/acs.inorgchem.6b00040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sachinath Bera
- Department
of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 103, India
| | - Sandip Mondal
- Department
of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 103, India
| | - Suvendu Maity
- Department
of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 103, India
| | - Thomas Weyhermüller
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstrasse 34-36, D-45470 Mülheim, Germany
| | - Prasanta Ghosh
- Department
of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 103, India
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12
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Li H, Zhang L, Ye M, Fan X. A Comparative Study of the Redox‐Induced Linkage Isomerization of Ruthenium and Osmium Complexes. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Huifang Li
- Key Laboratory of Organo‐Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P. R. China, http://www.gnnu.cn/
| | - Lisheng Zhang
- Key Laboratory of Organo‐Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P. R. China, http://www.gnnu.cn/
| | - Min Ye
- Key Laboratory of Organo‐Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P. R. China, http://www.gnnu.cn/
| | - Xiaolin Fan
- Key Laboratory of Organo‐Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P. R. China, http://www.gnnu.cn/
- Material and Chemical Engineering Department, Pingxiang University, Pingxiang 337055, P. R. China
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13
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Li H, Zhang L, Fan X, Zhao Y. Theoretical studies on the redox-stimulated isomerization in electrochromic osmium sulfoxide complexes. J Phys Chem A 2015; 119:4244-51. [PMID: 25856566 DOI: 10.1021/acs.jpca.5b02134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Redox-stimulated intramolecular isomerization of the DMSO ligand in [Os(bpy)2(DMSO)2](2+) (bpy = 2,2'-bipyridine; DMSO = dimethyl sulfoxide) was explored theoretically for better understanding the electrochromic properties of osmium sulfoxide complexes. It is found that the HOMO-LUMO gap is decreased because the electron transfer amount from DMSO1 ligand to Os center using Os-S1 linkage is larger than that using Os-O1 linkage, which makes the absorption of such electrochromic Os(II) sulfoxide complexes red-shifted. Moreover, it is observed that Os-O linkage is preferred by the "hard" Os(III) metal and the "soft" Os(I) metal prefers Os-S linkage, compared with Os(II). Intrinsic reaction pathway calculation results demonstrate that Os-S1 → Os-O1 isomerization is favored by Os(II) oxidation, while Os-O1 → Os-S1 isomerization is much easier to be triggered by reduction of Os(III) or Os(II). In addition, DMSO2 linkage isomerization becomes much harder to proceed attributed to the increased bond-strength between DMSO2 and Os center upon Os(II)-O1 → Os(II)-S1 rearrangement, which makes only one DMSO ligand isomerized observed experimentally.
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Affiliation(s)
- Huifang Li
- †Key Laboratory of Organo-Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, R. R. China
| | - Lisheng Zhang
- †Key Laboratory of Organo-Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, R. R. China
| | - Xiaolin Fan
- †Key Laboratory of Organo-Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, R. R. China
| | - Yi Zhao
- ‡State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, P.R. China
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14
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Li H, Zhang L, Wang Y, Fan X. Theoretical studies on the photoisomerization mechanism of osmium(ii) sulfoxide complexes. RSC Adv 2015. [DOI: 10.1039/c5ra06723e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Role of 3LF state in the photoisomerization mechanism of photochromic osmium sulfoxide complex, [Os(bpy)2(DMSO)2]2+, is examined theoretically.
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Affiliation(s)
- Huifang Li
- Key Laboratory of Organo-Pharmaceutical Chemistry
- Gannan Normal University
- Ganzhou 341000
- P. R. China
| | - Lisheng Zhang
- Key Laboratory of Organo-Pharmaceutical Chemistry
- Gannan Normal University
- Ganzhou 341000
- P. R. China
| | - Yanfei Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry
- Gannan Normal University
- Ganzhou 341000
- P. R. China
| | - Xiaolin Fan
- Key Laboratory of Organo-Pharmaceutical Chemistry
- Gannan Normal University
- Ganzhou 341000
- P. R. China
- Material and Chemical Engineering Department
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15
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Agarwala H, Scherer TM, Mobin SM, Kaim W, Lahiri GK. Bidirectional non-innocence of the β-diketonato ligand 9-oxidophenalenone (L-) in [Ru([9]aneS3)(L)(dmso)]n, [9]aneS3 = 1,4,7-trithiacyclononane. Dalton Trans 2014; 43:3939-48. [PMID: 24448427 DOI: 10.1039/c3dt53069h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The new compound [Ru(II)([9]aneS3)(L)(dmso)]ClO4 ([]ClO4) ([9]aneS3 = 1,4,7-trithiacyclononane, HL = 9-hydroxyphenalenone, dmso = dimethylsulfoxide) has been structurally characterised to reveal almost equal C-O bond distances of coordinated L(-), suggesting a delocalised bonding situation of the β-diketonato ligand. The dmso ligand is coordinated via the sulfur atom in the native (1+) and reduced states (1 and 1-) as has been revealed by X-ray crystallography and by DFT calculations. Cyclic voltammetry of 1+ exhibits two close-lying one-electron oxidation waves at 0.77 V and 0.94 V, and two similarly close one-electron reduction processes at -1.43 V and -1.56 V versus SCE in CH2Cl2. The electronic structures of 1n in the accessible redox states have been analysed via experiments (EPR and UV-vis-NIR spectroelectrochemistry) and by DFT/TD-DFT calculations, revealing the potential for bidirectional non-innocent behaviour of coordinated L(˙/-/˙2-). Specifically, the studies establish significant involvement of L based frontier orbitals in both the oxidation and reduction processes: [([9]aneS3)(dmso)Ru(III)-L˙](3+) (1(3+)) ⇌ [([9]aneS3)(dmso)Ru(III)-L(-)](2+)/[([9]aneS3)(dmso)Ru(II)-L˙](2+) (1(2+)) ⇌ [([9]aneS3)(dmso)Ru(II)-L(-)](+) (1(+)) ⇌ [([9]aneS3)(dmso)Ru(II)-L(˙2-)] (1) ⇌ [([9]aneS3)(dmso)Ru(II)-L(3-)](-)/[([9]aneS3)(dmso)Ru(I)-L(˙2-)](-) (1-).
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Affiliation(s)
- Hemlata Agarwala
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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16
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Li H, Zhang L, Lin H, Fan X. A DFT-D study on the electrochromic mechanism of ruthenium sulfoxide complexes. RSC Adv 2014. [DOI: 10.1039/c4ra06047d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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17
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Albani BA, Durr CB, Peña B, Dunbar KR, Turro C. Isomerization initiated by photoinduced ligand dissociation in Ru(ii) complexes with the ligand 2-p-tolylpyridinecarboxaldimine. Dalton Trans 2014; 43:17828-37. [DOI: 10.1039/c4dt02016b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Göttle AJ, Alary F, Dixon IM, Heully JL, Boggio-Pasqua M. Unravelling the S → O linkage photoisomerization mechanisms in cis- and trans-[Ru(bpy)2(DMSO)2](2+) using density functional theory. Inorg Chem 2014; 53:6752-60. [PMID: 24932513 DOI: 10.1021/ic500546q] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A mechanistic study of the intramolecular S → O linkage photoisomerization in the cis and trans isomers of [Ru(bpy)2(DMSO)2](2+) was performed using density functional theory. This study reveals that for the cis isomer the linkage photoisomerization of the two DMSO ligands occurs sequentially in the lowest triplet excited state and can either be achieved by a one-photon or by a two-photon mechanism. A mechanistic picture of the S → O photoisomerization of the trans isomer is also proposed. This work especially highlights that both adiabatic and nonadiabatic processes are involved in these mechanisms and that their coexistence is responsible for the rich photophysics and photochemical properties observed experimentally for the studied complexes. The different luminescent behavior experimentally observed at low temperature between the cis and trans isomers is rationalized based on the peculiarity of the topology of the triplet excited-state potential energy surfaces.
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Affiliation(s)
- Adrien J Göttle
- Laboratoire de Chimie et Physique Quantiques, UMR 5626 CNRS/Université Paul Sabatier-Toulouse III , 118 route de Narbonne, 31062 Toulouse, France
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19
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Li H, Zhang L, Lin H, Fan X. A DFT-D study on the electronic and photophysical properties of ruthenium (II) complex with a chelating sulfoxide group. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.04.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Kato M, Unoura K, Takayanagi T, Ikeda Y, Fujihara T, Nagasawa A. Preferential behavior on donating atoms of an ambidentate ligand 2-methylisothiazol-3(2H)-one in its metal complexes. Inorg Chem 2013; 52:13375-83. [PMID: 24205862 DOI: 10.1021/ic401673z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Five metal complexes of 2-methylisothiazol-3(2H)-one (MIO), [Co(III)(NH3)5(MIO)](3+), [Ru(II)(NH3)5(MIO)](2+), [Ru(III)(NH3)5(MIO)](3+), [Pt(II)Cl3(MIO)](-), and trans-[U(VI)O2(NO3)2(MIO)2], were synthesized, and their structures were determined by single-crystal X-ray crystallography. MIO is an ambidentate ligand and coordinates to metal centers through its oxygen atom in the cobalt(III), ruthenium(III), and uranium(VI) complexes and through its sulfur atom in the ruthenium(II) and platinum(III) complexes. This result suggests that MIO shows preferential behavior on its donating atoms. We also studied the electron-donor abilities of the oxygen and sulfur atoms of MIO. Various physical measurements on the conjugate acid of MIO and the MIO complexes allowed us to determine an acid dissociation constant (pKa) and donor number (DN) for the oxygen atom of MIO and Lever's electrochemical parameter (EL) and a relative covalency parameter (kL) for the sulfur atom.
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Affiliation(s)
- Masaru Kato
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University , 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
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Rana A, Jana SK, Datta S, Butcher RJ, Zangrando E, Dalai S. 1D coordination polymers formed by tetranuclear lead(II) building blocks with carboxylate ligands: In situ isomerization of itaconic acid. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2013.09.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Bahreman A, Limburg B, Siegler MA, Bouwman E, Bonnet S. Spontaneous formation in the dark, and visible light-induced cleavage, of a Ru-S bond in water: a thermodynamic and kinetic study. Inorg Chem 2013; 52:9456-69. [PMID: 23909908 DOI: 10.1021/ic401105v] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In this work the thermal and photochemical reactivity of a series of ruthenium complexes [Ru(terpy)(N-N)(L)](X)2 (terpy = 2,2';6',2″-terpyridine, L = 2-(methylthio)ethanol (Hmte) or water, and X is Cl(-) or PF6(-)) with four different bidentate chelates N-N = bpy (2,2'-bipyridine), biq (2,2'-biquinoline), dcbpy (6,6'-dichloro-2,2'-bipyridine), or dmbpy (6,6'-dimethyl-2,2'-bipyridine), is described. For each chelate N-N the thermodynamic constant of the dark equilibrium between the aqua- and Hmte- complexes, the Hmte photosubstitution quantum yield, and the rate constants of the thermal interconversion between the aqua and Hmte complexes were measured at room temperature. By changing the steric hindrance and electronic properties of the spectator N-N ligand along the series bpy, biq, dcbpy, dmbpy the dark reactivity clearly shifts from a nonlabile equilibrium with N-N = bpy to a very labile thermal equilibrium with N-N = dmbpy. According to variable-temperature rate constant measurements in the dark near pH = 7 the activation enthalpies for the thermal substitution of H2O by Hmte are comparable for all ruthenium complexes, whereas the activation entropies are negative for bpy and biq, and positive for dcbpy and dmbpy complexes. These data are indicative of a change in the substitution mechanism, being interchange associative with nonhindered or poorly hindered chelates (bpy, biq), and interchange dissociative for more bulky ligands (dcbpy, dmbpy). For the most labile dmbpy system, the thermal equilibrium is too fast to allow significant modification of the composition of the mixture using light, and for the nonhindered bpy complex the photosubstitution of Hmte by H2O is possible but thermal binding of Hmte to the aqua complex does not occur at room temperature. By contrast, with N-N = biq or dcbpy the thermodynamic and kinetic parameters describing the formation and breakage of the Ru-S bond lie in a range where the bond forms spontaneously in the dark, but is efficiently cleaved under light irradiation. Thus, the ratio between the aqua and Hmte complex in solution can be efficiently controlled at room temperature using visible light irradiation.
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Affiliation(s)
- Azadeh Bahreman
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, Leiden, 2300 RA, The Netherlands
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Garg K, Engle JT, Ziegler CJ, Rack JJ. Tuning excited state isomerization dynamics through ground state structural changes in analogous ruthenium and osmium sulfoxide complexes. Chemistry 2013; 19:11686-95. [PMID: 23861290 DOI: 10.1002/chem.201301553] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Indexed: 11/07/2022]
Abstract
The complexes [Ru(bpy)2(pyESO)](PF6)2 and [Os(bpy)2(pyESO)](PF6)2, in which bpy is 2,2'-bipyridine and pyESO is 2-((isopropylsulfinyl)ethyl)pyridine, were prepared and studied by (1)H NMR, UV-visible and ultrafast transient absorption spectroscopy, as well as by electrochemical methods. Crystals suitable for X-ray structural analysis were grown for [Ru(bpy)2(pyESO)](PF6)2. Cyclic voltammograms of both complexes provide evidence for S→O and O→S isomerization as these voltammograms are described by an ECEC (electrochemical-chemical electrochemical-chemical) mechanism in which isomerization follows Ru(2+) oxidation and Ru(3+) reduction. The S- and O-bonded Ru(3+/2+) couples appear at 1.30 and 0.76 V versus Ag/AgCl in propylene carbonate. For [Os(bpy)2(pyESO)](PF6)2, these couples appear at 0.97 and 0.32 V versus Ag/AgCl in acetonitrile, respectively. Charge-transfer excitation of [Ru(bpy)2(pyESO)](PF6)2 results in a significant change in the absorption spectrum. The S-bonded isomer of [Ru(bpy)2(pyESO)](2+) features a lowest energy absorption maximum at 390 nm and the O-bonded isomer absorbs at 480 nm. The quantum yield of isomerization in [Ru(bpy)2(pyESO)](2+) was found to be 0.58 in propylene carbonate and 0.86 in dichloroethane solution. Femtosecond transient absorption spectroscopic measurements were collected for both complexes, revealing time constants of isomerizations of 81 ps (propylene carbonate) and 47 ps (dichloroethane) in [Ru(bpy)2(pyESO)](2+). These data and a model for the isomerizing complex are presented. A striking conclusion from this analysis is that expansion of the chelate ring by a single methylene leads to an increase in the isomerization time constant by nearly two orders of magnitude.
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Affiliation(s)
- Komal Garg
- Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Clippinger Laboratories, Ohio University, Athens, OH 45701, USA
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Transition Metal Compounds Towards Holography. MATERIALS 2012; 5:1155-1175. [PMID: 28817028 PMCID: PMC5448964 DOI: 10.3390/ma5061155] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 06/14/2012] [Accepted: 06/14/2012] [Indexed: 12/17/2022]
Abstract
We have successfully proposed the application of transition metal compounds in holographic recording media. Such compounds feature an ultra-fast light-induced linkage isomerization of the transition-metal–ligand bond with switching times in the sub-picosecond regime and lifetimes from microseconds up to hours at room temperature. This article highlights the photofunctionality of two of the most promising transition metal compounds and the photophysical mechanisms that are underlying the hologram recording. We present the latest progress with respect to the key measures of holographic media assembled from transition metal compounds, the molecular embedding in a dielectric matrix and their impressive potential for modern holographic applications.
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Smith PW, Moore CE, Rheingold AL, Figueroa JS. Coordination and structural properties of encumbering 6-mesityl-2-picolinate complexes. Dalton Trans 2012; 41:8031-8. [PMID: 22549113 DOI: 10.1039/c2dt30585b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In an effort to enforce a sterically hindered environment in transition-metal and main-group 2-picolinate complexes, the synthesis of the encumbering derivative 6-mesityl-2-picolinate ((Mes)pic) is presented. The coordination and structural properties of (Mes)pic are demonstrated with a range of transition-metal and main-group fragments. The 6-position mesityl group of (Mes)pic is shown to alter both the primary and secondary coordination spheres of metal centers relative to the ubiquitous and unencumbered parent 2-picolinate anion.
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Affiliation(s)
- Patrick W Smith
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, USA
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27
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Göttle AJ, Dixon IM, Alary F, Heully JL, Boggio-Pasqua M. Adiabatic Versus Nonadiabatic Photoisomerization in Photochromic Ruthenium Sulfoxide Complexes: A Mechanistic Picture from Density Functional Theory Calculations. J Am Chem Soc 2011; 133:9172-4. [DOI: 10.1021/ja201625b] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Adrien J. Göttle
- Laboratoire de Chimie et Physique Quantiques - IRSAMC, CNRS et Université de Toulouse, 31062 Toulouse, France
| | - Isabelle M. Dixon
- Laboratoire de Chimie et Physique Quantiques - IRSAMC, CNRS et Université de Toulouse, 31062 Toulouse, France
| | - Fabienne Alary
- Laboratoire de Chimie et Physique Quantiques - IRSAMC, CNRS et Université de Toulouse, 31062 Toulouse, France
| | - Jean-Louis Heully
- Laboratoire de Chimie et Physique Quantiques - IRSAMC, CNRS et Université de Toulouse, 31062 Toulouse, France
| | - Martial Boggio-Pasqua
- Laboratoire de Chimie et Physique Quantiques - IRSAMC, CNRS et Université de Toulouse, 31062 Toulouse, France
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28
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Porter BL, McClure BA, Abrams ER, Engle JT, Ziegler CJ, Rack JJ. Photoisomerization in an analogous set of ruthenium sulfoxide complexes. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2010.11.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Lutterman DA, Lazinski-Melanson LA, Asher Y, Johnston DH, Gallucci JC, Turro C. Effect of intraligand π-delocalization on the photophysical properties of two new Ru(II) complexes. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2010.09.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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30
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Fu Z, Chen Y, Zhang J, Liao S. Correlation between the photoactive character and the structures of two novel metal organic frameworks. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10945f] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Singh A, Mondal B. Stepwise syntheses, structure and spectroscopic studies of ruthenium complexes of 2,6-bis(benzimidazol-2-yl)pyridine with o-iminoquinone ancillary ligand. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.05.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Affiliation(s)
- Beth Anne McClure
- Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Clippinger Laboratories, Ohio University Athens, OH 45701, USA, Fax: +1‐740‐593‐0148
| | - Jeffrey J. Rack
- Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Clippinger Laboratories, Ohio University Athens, OH 45701, USA, Fax: +1‐740‐593‐0148
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Cis–trans isomerism in cobalt(II) complexes with 3-hydroxypicolinic acid. Structural, DFT and thermal studies. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.02.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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McClure BA, Abrams ER, Rack JJ. Excited State Distortion in Photochromic Ruthenium Sulfoxide Complexes. J Am Chem Soc 2010; 132:5428-36. [DOI: 10.1021/ja9099399] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Beth Anne McClure
- Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701
| | - Eric R. Abrams
- Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701
| | - Jeffrey J. Rack
- Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701
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35
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Share AI, Parimal K, Flood AH. Bilability is defined when one electron is used to switch between concerted and stepwise pathways in Cu(I)-based bistable [2/3]pseudorotaxanes. J Am Chem Soc 2010; 132:1665-75. [PMID: 20070081 DOI: 10.1021/ja908877d] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Supramolecular switches operate as simple machines by using a stimulus to turn stations off and on, generating thermodynamic differences that define bistability and enable motion. What has not been previously investigated, yet is required to gain further control over molecular movements for complex operations, is an understanding of how the same stimulus can also switch pathways off and on, thus, defining the kinetic property of bilability. To address this challenge, the mechanisms of the forward and return reactions of redox-switchable Cu(I)-based [2/3]pseudorotaxanes have been quantitatively characterized utilizing mechanistic cyclic voltammetry and employing a series of isosteric bis-bidentate ligands. First, the bistability of the switch is retained across the series of ligands: Reduction of the ligand drives the reaction forward where a [2]pseudorotaxane switches into a reduced [3]pseudorotaxane and reoxidation drives the switching cycle back to the beginning. Second, the switch is bilabile with the forward reaction following an association-activated interchange pathway (concerted), whereas the reverse reaction follows a different dissociation-based dethreading pathway (stepwise). The forward reaction is more sensitive to denticity (bidentate tetrazinyl ligand, k(2) = 12,000 M(-1) s(-1), versus the monodentate pyrazinyl ligand, k(2) = 1500 M(-1) s(-1)) than to electronics (k(2) = 12,000 M(-1) s(-1) for methyl and trifluoromethyl substituents). The rate of return with the pyrazinyl ligand is k(1) = 50 s(-1). Consequently, both the mechanism and the thermodynamics of switching are stimuli dependent; they change with the oxidation state of the ligand. These findings have implications for the future design of molecular motors, which can be built from systems displaying allosterically coupled bistability and bilability.
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Affiliation(s)
- Andrew I Share
- Department of Chemistry, University of Indiana, Bloomington, 800 E. Kirkwood Ave., Bloomington, Indiana 47405, USA
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36
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Lutterman DA, Rachford AA, Rack JJ, Turro C. Theoretical insight on the S --> O photoisomerization of DMSO complexes of Ru(II). J Phys Chem A 2010; 113:11002-6. [PMID: 19761198 DOI: 10.1021/jp903048n] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Complexes of the type [Ru(tpy)(L)(dmso)](n+) (where tpy = 2,2':6',2''-terpyridine; L = 2,2'-bipyridine (bpy), n = 2; N,N,N',N'-tetramethylethylene diamine (tmen), n = 2; acetylacetonate (acac), n = 1; oxalate (ox), n = 0; malonate (mal), n = 0) were investigated by density functional theory (DFT). The results do not support a promoting role for the dsigma* ligand field (LF) states during excited state S --> O isomerization. Instead, the calculations show that the formation of a Ru(III) center is important in the isomerization, along with the identity of the ancillary bidentate ligand. The present work shows that the orbital contributions from the bidentate ligand to the HOMO, which is typically centered on the ruthenium, plays an important role in the photochemical and oxidative reactivity of the complexes.
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Affiliation(s)
- Daniel A Lutterman
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, USA
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37
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Polymorphism of cobalt(II) complex with 6-bromopicolinic acid: The influence of the solution pH value on the formation of polymorphs. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.09.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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Ng S, Walker MB, Farmer PJ. Photo- and thermal-induced linkage isomerizations in a peroxydithiocarbamate–Ru complex. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.05.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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39
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Kukovec BM, Popović Z. Pseudopolymorphism in nickel(II) complexes with 6-bromopicolinic acid. Synthesis, structural and thermal studies. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.05.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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40
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Kukovec BM, Popović Z, Komorsky-Lovrić Š, Vojković V, Vinković M. Synthesis, structural, spectroscopic and thermal characterization of cobalt complexes with 3- and 6-methylpicolinic acid. Voltammetric and spectrophotometric study in solution. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Leung CF, Wong CY, Ko CC, Yuen MC, Wong WT, Wong WY, Lau TC. 8-Quinolinolato complexes of ruthenium(II) and (III). Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.05.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Kato M, Takayanagi T, Fujihara T, Nagasawa A. Linkage isomerism of pentaammine(dimethylsulfoxide)ruthenium(II/III) complexes: A theoretical study. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.06.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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43
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To TT, Heilweil EJ, Duke CB, Ruddick KR, Webster CE, Burkey TJ. Development of Ultrafast Photochromic Organometallics and Photoinduced Linkage Isomerization of Arene Chromium Carbonyl Derivatives. J Phys Chem A 2009; 113:2666-76. [DOI: 10.1021/jp8068909] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Johansson O, Johannissen L, Lomoth R. Bistable Molecular Switches Based on Linkage Isomerization in Ruthenium Polypyridyl Complexes with a Ligand-Bound Ambidentate Motif. Chemistry 2008; 15:1195-204. [DOI: 10.1002/chem.200801208] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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Mockus NV, Marquard S, Rack JJ. Excited state isomerization in a new ruthenium chelating sulfoxide complex. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2008.04.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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46
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Kukovec BM, Popović Z, Pavlović G. Synthesis and characterization of copper(II) complexes with 3-methylpicolinic acid. Crystal and molecular structure of bis (3-methylpicolinato- N , O )(4-picoline)copper(II). J COORD CHEM 2008. [DOI: 10.1080/00958970802005153] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Boris-Marko Kukovec
- a Faculty of Science, Department of Chemistry, Laboratory of General and Inorganic Chemistry , University of Zagreb , Horvatovac 102a, HR-10000 Zagreb, Croatia
| | - Zora Popović
- a Faculty of Science, Department of Chemistry, Laboratory of General and Inorganic Chemistry , University of Zagreb , Horvatovac 102a, HR-10000 Zagreb, Croatia
| | - Gordana Pavlović
- b Faculty of Textile Technology, Department of Applied Chemistry, Laboratory of General Chemistry , University of Zagreb , Prilaz baruna Filipovića 28a, HR-10000 Zagreb, Croatia
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47
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Mockus N, Rabinovich D, Petersen J, Rack J. Femtosecond Isomerization in a Photochromic Molecular Switch. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703677] [Citation(s) in RCA: 10] [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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48
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Mockus N, Rabinovich D, Petersen J, Rack J. Femtosecond Isomerization in a Photochromic Molecular Switch. Angew Chem Int Ed Engl 2008; 47:1458-61. [DOI: 10.1002/anie.200703677] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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49
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Rachford AA, Petersen JL, Rack JJ. Phototriggered sulfoxide isomerization in [Ru(pic)2(dmso)2]. Dalton Trans 2007:3245-51. [PMID: 17893769 DOI: 10.1039/b704205a] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report the characterization and photochemistry of a simple ruthenium coordination complex containing only picolinate (pic) and dmso, which exhibits a large isomerization quantum yield (Phi(SS-->OO) = 0.50) in various solvents. The picolinate ligands of [Ru(pic)(2)(dmso)(2)] are in a cis arrangement so that the carboxylate oxygen of one pic ligand (O1) is trans to the pyridine of the second picolinate (N2). One dmso ligand (S1) is trans to a pyridine nitrogen (N1), while the second dmso (S2) is trans to a carboxylate oxygen (O3). The cyclic voltammetry, (1)H NMR, IR, and UV-vis spectroscopy data suggest that while both dmso ligands isomerize photochemically, only one dmso ligand isomerizes electrochemically. Isomerization quantum yields for each dmso ligand differ by an order of magnitude (Phi(SS-->SO) = 0.46 and Phi(SO-->OO) = 0.036). In agreement with previous results, the isomerization quantum yield for each dmso is dependent on the ligand that is trans to the dmso.
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Affiliation(s)
- Aaron A Rachford
- Department of Chemistry and Biochemistry, Athens, Ohio 45701, USA.
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50
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Nagao H, Enomoto K, Wakabayashi Y, Komiya G, Hirano T, Oi T. Synthesis of Nitrosylruthenium Complexes Containing 2,2‘:6‘,2‘ ‘-Terpyridine by Reactions of Alkoxo Complexes with Acids. Inorg Chem 2007; 46:1431-9. [PMID: 17291127 DOI: 10.1021/ic061644w] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nitrosylruthenium complexes containing 2,2':6',2"-terpyridine (terpy) have been synthesized and characterized. The three alkoxo complexes trans-(NO, OCH3), cis-(Cl, OCH3)-[RuCl(OCH3)(NO)(terpy)]PF6 ([2]PF6), trans-(NO, OC2H5), cis-(Cl, OC2H5)-[RuCl(OC2H5)(NO)(terpy)]PF6 ([3]PF6), and [RuCl(OC3H7)(NO)(terpy)]PF6 ([4]PF6) were synthesized by reactions of trans-(Cl, Cl), cis-(NO, Cl)-[RuCl2(NO)(terpy)]PF6 ([1]PF6) with NaOCH3 in CH3OH, C2H5OH, and C3H7OH, respectively. Reactions of [3]PF6 with an acid such as hydrochloric acid and trifluoromethansulforic acid afford nitrosyl complexes in which the alkoxo ligand is substituted. The geometrical isomer of [1]PF6, trans-(NO, Cl), cis-(Cl, Cl)-[RuCl2(NO)(terpy)]PF6 ([5]PF6), was obtained by the reaction of [3]PF6 in a hydrochloric acid solution. Reaction of [3]PF6 with trifluoromethansulforic acid in CH3CN gave trans-(NO, Cl), cis-(CH3CN, Cl)-[RuCl(CH3CN)(NO)(terpy)]2+ ([6]2+) under refluxing conditions. The structures of [3]PF6, [4]PF6.CH3CN, [5]CF3SO3, and [6](PF6)2 were determined by X-ray crystallograpy.
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Affiliation(s)
- Hirotaka Nagao
- Department of Chemistry, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan.
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