1
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Tong KM, Toigo J, Patrick BO, Wolf MO. Rhenium(I) Complexes with Sulfur-Bridged Dipyridyl Ligands: Structural, Photophysical, and Computational Studies. Inorg Chem 2023; 62:13662-13671. [PMID: 37555810 DOI: 10.1021/acs.inorgchem.3c02124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
A series of six new rhenium(I) tricarbonyl complexes [Re(CO)3(N-N)Br] bearing sulfur-bridged dipyridyl (N-N) ligands with three different oxidation states (sulfide (S), sulfoxide (SO), and sulfone (SO2)) are described. Spectroscopic studies show that changing the oxidation state of the ligands influences the photophysical properties of the complexes, with complexes 3 and 6 containing the sulfone ligand exhibiting a lower energy MLCT absorption band tailing into the visible region. Solution-state emission measurements show that these complexes exhibit readily tunable emission energies from 480 to 610 nm, depending on the oxidation state of the sulfur bridge and the presence of substituents on the pyridyl rings. Solid-state emission measurements show that the emission is significantly red-shifted upon oxidation of the sulfur bridge to sulfone with enhanced photoluminescence quantum yield.
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Affiliation(s)
- Ka-Ming Tong
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jessica Toigo
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Brian O Patrick
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Michael O Wolf
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
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2
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Schindler K, Zobi F. Anticancer and Antibiotic Rhenium Tri- and Dicarbonyl Complexes: Current Research and Future Perspectives. Molecules 2022; 27:539. [PMID: 35056856 PMCID: PMC8777860 DOI: 10.3390/molecules27020539] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/23/2021] [Accepted: 01/12/2022] [Indexed: 12/20/2022] Open
Abstract
Organometallic compounds are increasingly recognized as promising anticancer and antibiotic drug candidates. Among the transition metal ions investigated for these purposes, rhenium occupies a special role. Its tri- and dicarbonyl complexes, in particular, attract continuous attention due to their relative ease of preparation, stability and unique photophysical and luminescent properties that allow the combination of diagnostic and therapeutic purposes, thereby permitting, e.g., molecules to be tracked within cells. In this review, we discuss the anticancer and antibiotic properties of rhenium tri- and dicarbonyl complexes described in the last seven years, mainly in terms of their structural variations and in vitro efficacy. Given the abundant literature available, the focus is initially directed on tricarbonyl complexes of rhenium. Dicarbonyl species of the metal ion, which are slowly gaining momentum, are discussed in the second part in terms of future perspective for the possible developments in the field.
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Affiliation(s)
| | - Fabio Zobi
- Department of Chemistry, Fribourg University, Chemin du Musée 9, 1700 Fribourg, Switzerland;
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3
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Dumas MT, Jenkins TF, Wedal JC, Ziller JW, Furche F, Evans WJ. Synthesis of a 2-Isocyanophenolate Ligand, (2-CNC 6H 4O) 1–, by Ring-Opening of Benzoxazole with Rare-Earth Metal Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Megan T. Dumas
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Tener F. Jenkins
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Justin C. Wedal
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Filipp Furche
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - William J. Evans
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
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4
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Schindler K, Crochet A, Zobi F. Aerobically stable and substitutionally labile α-diimine rhenium dicarbonyl complexes. RSC Adv 2021; 11:7511-7520. [PMID: 35423250 PMCID: PMC8694950 DOI: 10.1039/d1ra00514f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 02/05/2021] [Indexed: 12/11/2022] Open
Abstract
New synthetic routes to aerobically stable and substitutionally labile α-diimine rhenium(i) dicarbonyl complexes are described. The molecules are prepared in high yield from the cis–cis–trans-[Re(CO)2(tBu2bpy)Br2]− anion (2, where tBu2bpy is 4,4′-di-tert-butyl-2,2′-bipyridine), which can be isolated from the one electron reduction of the corresponding 17-electron complex (1). Compound 2 is stable in the solid state, but in solution it is oxidized by molecular oxygen back to 1. Replacement of a single bromide of 2 by σ-donor monodentate ligands (Ls) yields stable neutral 18-electron cis–cis–trans-[Re(CO)2(tBu2bpy)Br(L)] species. In coordinating solvents like methanol the halide is replaced giving the corresponding solvated cations. [Re(CO)2(tBu2bpy)Br(L)] species can be further reacted with Ls to prepare stable cis–cis–trans-[Re(CO)2(tBu2bpy)(L)2]+ complexes in good yield. Ligand substitution of Re(i) complexes proceeds via pentacoordinate intermediates capable of Berry pseudorotation. In addition to the cis–cis–trans-complexes, cis–cis–cis- (all cis) isomers are also formed. In particular, cis–cis–trans-[Re(CO)2(tBu2bpy)(L)2]+ complexes establish an equilibrium with all cis isomers in solution. The solid state crystal structure of nearly all molecules presented could be elucidated. The molecules adopt a slightly distorted octahedral geometry. In comparison to similar fac-[Re(CO)3]+complexes, Re(i) diacarbonyl species are characterized by a bend (ca. 7°) of the axial ligands towards the α-diimine unit. [Re(CO)2(tBu2bpy)Br2]− and [Re(CO)2(tBu2bpy)Br(L)] complexes may be considered as synthons for the preparation of a variety of new stable diamagnetic dicarbonyl rhenium cis-[Re(CO)2]+ complexes, offering a convenient entry in the chemistry of the core. New synthetic routes to aerobically stable and substitutionally labile α-diimine rhenium(i) dicarbonyl complexes offer a convenient entry in the chemistry of the cis-[Re(CO)2]+ core.![]()
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Affiliation(s)
- Kevin Schindler
- Department of Chemistry, Fribourg University Chemin Du Musée 9 1700 Fribourg Switzerland
| | - Aurélien Crochet
- Department of Chemistry, Fribourg University Chemin Du Musée 9 1700 Fribourg Switzerland
| | - Fabio Zobi
- Department of Chemistry, Fribourg University Chemin Du Musée 9 1700 Fribourg Switzerland
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5
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6
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Han J, Tang KM, Cheng SC, Ng CO, Chun YK, Chan SL, Yiu SM, Tse MK, Roy VAL, Ko CC. Mechanochemical changes on cyclometalated Ir(iii) acyclic carbene complexes – design and tuning of luminescent mechanochromic transition metal complexes. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01278h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of luminescent cyclometalated Ir(iii) complexes with readily tunable mechanochromic properties derived from the mechanically induced trans-to-cis isomerization have been developed.
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Affiliation(s)
- Jingqi Han
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- China
| | - Kin-Man Tang
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- China
| | | | - Chi-On Ng
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- China
| | - Yuen-Kiu Chun
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- China
| | - Shing-Lun Chan
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- China
| | - Shek-Man Yiu
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- China
| | - Man-Kit Tse
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- China
| | - Vellaisamy A. L. Roy
- Department of Materials Science and Engineering
- City University of Hong Kong
- Kowloon
- China
| | - Chi-Chiu Ko
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- China
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7
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8
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Chan KC, Tong KM, Cheng SC, Ng CO, Yiu SM, Ko CC. Design of Luminescent Isocyano Rhenium(I) Complexes: Photophysics and Effects of the Ancillary Ligands. Inorg Chem 2018; 57:13963-13972. [DOI: 10.1021/acs.inorgchem.8b02536] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kin-Cheung Chan
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Ka-Ming Tong
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Shun-Cheung Cheng
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Chi-On Ng
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Shek-Man Yiu
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Chi-Chiu Ko
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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9
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Affiliation(s)
- Shigeki Kuwata
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - F. Ekkehardt Hahn
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, D-48149 Münster, Germany
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10
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Chan KC, Cheng SC, Lo LTL, Yiu SM, Ko CC. Luminescent Charge-Neutral Copper(I) Phenanthroline Complexes with Isocyanoborate Ligand. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701205] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kin-Cheung Chan
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong China
| | - Shun-Cheung Cheng
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong China
| | - Larry Tso-Lun Lo
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong China
| | - Shek-Man Yiu
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong China
| | - Chi-Chiu Ko
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong China
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11
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Gonell S, Miller AJ. Carbon Dioxide Electroreduction Catalyzed by Organometallic Complexes. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2018. [DOI: 10.1016/bs.adomc.2018.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Katkova SA, Kinzhalov MA, Tolstoy PM, Novikov AS, Boyarskiy VP, Ananyan AY, Gushchin PV, Haukka M, Zolotarev AA, Ivanov AY, Zlotsky SS, Kukushkin VY. Diversity of Isomerization Patterns and Protolytic Forms in Aminocarbene PdII and PtII Complexes Formed upon Addition of N,N′-Diphenylguanidine to Metal-Activated Isocyanides. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00569] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Svetlana A. Katkova
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
| | - Mikhail A. Kinzhalov
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
| | - Peter M. Tolstoy
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
| | - Alexander S. Novikov
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
| | - Vadim P. Boyarskiy
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
| | - Anastasiia Yu. Ananyan
- Institute of Macromolecular Compounds of Russian Academy of Sciences, Bolshoii Pr. 31, 199004 Saint Petersburg, Russian Federation
| | - Pavel V. Gushchin
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
| | - Matti Haukka
- Department
of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Andrey A. Zolotarev
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
| | - Alexander Yu. Ivanov
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
| | - Semen S. Zlotsky
- Ufa State Petroleum Technological University, Kosmonavtov 1, 420062 Ufa, Bashkortostan, Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russian Federation
- Institute of Macromolecular Compounds of Russian Academy of Sciences, Bolshoii Pr. 31, 199004 Saint Petersburg, Russian Federation
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13
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Siegmund D, Lorenz N, Gothe Y, Spies C, Geissler B, Prochnow P, Nuernberger P, Bandow JE, Metzler-Nolte N. Benzannulated Re(i)–NHC complexes: synthesis, photophysical properties and antimicrobial activity. Dalton Trans 2017; 46:15269-15279. [DOI: 10.1039/c7dt02874a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A series of novel Re(i)(CO)3–NHC complexes bearing unsubstituted benzimidazol-2-ylidene ligands is presented which provide strong luminescence as well as high antibacterial activity.
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Affiliation(s)
- Daniel Siegmund
- Inorganic Chemistry I
- Bioinorganic Chemistry
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
| | - Nicole Lorenz
- Inorganic Chemistry I
- Bioinorganic Chemistry
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
| | - Yvonne Gothe
- Inorganic Chemistry I
- Bioinorganic Chemistry
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
| | - Christian Spies
- Physical Chemistry II
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
- Germany
| | - Bastian Geissler
- Physical Chemistry II
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
- Germany
| | - Pascal Prochnow
- Applied Microbiology
- Faculty of Biology and Biotechnology
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Patrick Nuernberger
- Physical Chemistry II
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
- Germany
| | - Julia E. Bandow
- Applied Microbiology
- Faculty of Biology and Biotechnology
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Nils Metzler-Nolte
- Inorganic Chemistry I
- Bioinorganic Chemistry
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
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14
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Meier M, Tan TTY, Hahn FE, Huynh HV. Donor Strength Determination of Benzoxazolin-2-ylidene, Benzobisoxazolin-2-ylidene, and Their Isocyanide Precursors by 13C NMR Spectroscopy of Their PdII and AuI Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00736] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Martin Meier
- Department
of Inorganic and Analytical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 28-30, 48149 Münster, Germany
| | - Tristan Tsai Yuan Tan
- Department
of Inorganic and Analytical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 28-30, 48149 Münster, Germany
| | - F. Ekkehardt Hahn
- Department
of Inorganic and Analytical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 28-30, 48149 Münster, Germany
| | - Han Vinh Huynh
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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15
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Ng CO, Cheng SC, Chu WK, Tang KM, Yiu SM, Ko CC. Luminescent Rhenium(I) Pyridyldiaminocarbene Complexes: Photophysics, Anion-Binding, and CO2-Capturing Properties. Inorg Chem 2016; 55:7969-79. [DOI: 10.1021/acs.inorgchem.6b01017] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chi-On Ng
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Shun-Cheung Cheng
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Wing-Kin Chu
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Kin-Man Tang
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Shek-Man Yiu
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Chi-Chiu Ko
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon,
Hong Kong, China
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16
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Liao JL, Chi Y, Wang JY, Chen ZN, Tsai ZH, Hung WY, Tseng MR, Lee GH. Pt(II) Phosphors Featuring Both Dicarbene and Functional Biazolate Chelates: Synthesis, Luminescent Properties, and Applications in Organic Light-Emitting Diodes. Inorg Chem 2016; 55:6394-404. [DOI: 10.1021/acs.inorgchem.6b00097] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jia-Ling Liao
- Department
of Chemistry and Low Carbon Energy Research Center, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yun Chi
- Department
of Chemistry and Low Carbon Energy Research Center, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jin-Yun Wang
- Fujian Institute of Research on the Structure of Matter, CAS, State Key Laboratory of Structural Chemistry, Fuzhou, 350002, China
| | - Zhong-Ning Chen
- Fujian Institute of Research on the Structure of Matter, CAS, State Key Laboratory of Structural Chemistry, Fuzhou, 350002, China
| | - Zheng-Hua Tsai
- Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Wen-Yi Hung
- Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Meu-Rurng Tseng
- Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
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17
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Maurin A, Ng CO, Chen L, Lau TC, Robert M, Ko CC. Photochemical and electrochemical catalytic reduction of CO2 with NHC-containing dicarbonyl rhenium(i) bipyridine complexes. Dalton Trans 2016; 45:14524-9. [PMID: 27293154 DOI: 10.1039/c6dt01686c] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The electrochemical and photochemical catalytic reductions of CO2 using N,O and N,S-NHC-containing dicarbonyl rhenium(i) bipyridine complexes have been investigated. By replacing the carbonyl ligand in tricarbonyl rhenium(i) complexes with a weaker π-accepting ligand, the characteristic MLCT transitions shifted to lower energy. This makes photocatalysts capable of harvesting low-energy visible light for catalyzing CO2 reduction. A detailed study revealed that these dicarbonyl rhenium(i) complexes are also highly selective for photocatalysis of CO2 to CO with a good quantum efficiency (10%), similar to that of the tricarbonyl rhenium(i) complex analogues. From the electrochemical study, it was observed that the catalysts efficiently produce CO from CO2 with high turnover frequency and good stability over time.
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Affiliation(s)
- Antoine Maurin
- Université Paris Diderot, Sorbonne Paris Cité, Laboratoire d'Electrochimie Moléculaire, Unité Mixte de Recherche Université-CNRS no. 7591, Bâtiment Lavoisier, 15 rue Jean de Baïf, 75205 Paris Cedex 13, France.
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18
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Comparisons on isomeric 1,10-phenanthroline aromatic heterocyclic derivatives with triphenylamine and thiophene donors before and after rhenium(I) carbonyl complexation. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Stanton CJ, Machan CW, Vandezande JE, Jin T, Majetich GF, Schaefer HF, Kubiak CP, Li G, Agarwal J. Re(I) NHC Complexes for Electrocatalytic Conversion of CO2. Inorg Chem 2016; 55:3136-44. [PMID: 26950549 DOI: 10.1021/acs.inorgchem.6b00079] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The modular construction of ligands around an N-heterocyclic carbene building block represents a flexible synthetic strategy for tuning the electronic properties of metal complexes. Herein, methylbenzimidazolium-pyridine and methylbenzimidazolium-pyrimidine proligands are constructed in high yield using recently established transition-metal-free techniques. Subsequent chelation to ReCl(CO)5 furnishes ReCl(N-methyl-N'-2-pyridylbenzimidazol-2-ylidine)(CO)3 and ReCl(N-methyl-N'-2-pyrimidylbenzimidazol-2-ylidine)(CO)3. These Re(I) NHC complexes are shown to be capable of mediating the two-electron conversion of CO2 following one-electron reduction; the Faradaic efficiency for CO formation is observed to be >60% with minor H2 and HCO2H production. Data from cyclic voltammetry is presented and compared to well-studied ReCl(2,2'-bipyridine)(CO)3 and MnBr(2,2'-bipyridine)(CO)3 systems. Results from density functional theory computations, infrared spectroelectrochemistry, and chemical reductions are also discussed.
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Affiliation(s)
- Charles J Stanton
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Charles W Machan
- Department of Chemistry and Biochemistry, University of California , San Diego, California 92093, United States
| | - Jonathon E Vandezande
- Center for Computational Quantum Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Tong Jin
- Department of Chemistry, University of New Hampshire , Durham, New Hampshire 03824, United States
| | - George F Majetich
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Henry F Schaefer
- Center for Computational Quantum Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Clifford P Kubiak
- Department of Chemistry and Biochemistry, University of California , San Diego, California 92093, United States
| | - Gonghu Li
- Department of Chemistry, University of New Hampshire , Durham, New Hampshire 03824, United States
| | - Jay Agarwal
- Center for Computational Quantum Chemistry, University of Georgia , Athens, Georgia 30602, United States
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20
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Ramos LD, Sampaio RN, de Assis FF, de Oliveira KT, Homem-de-Mello P, Patrocinio AOT, Frin KPM. Contrasting photophysical properties of rhenium(i) tricarbonyl complexes having carbazole groups attached to the polypyridine ligand. Dalton Trans 2016; 45:11688-98. [DOI: 10.1039/c6dt01112h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fac-[Re(CO)3(cbz2phen)(L)]0/+1 complexes showed a remarkable presence of the ILCTcbz2phen fluorescence in addition to the usually observed 3MLCTRe→cbz2phen. In PMMA films the emission is completely turned into a triplet excited state manifold.
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Affiliation(s)
- L. D. Ramos
- Universidade Federal do ABC - UFABC
- Santo Andre
- 09210-170 Brazil
| | - R. N. Sampaio
- Universidade Federal de Uberlândia – UFU
- Uberlândia
- 38400-902 Brazil
| | - F. F. de Assis
- Universidade Federal de São Carlos – UFSCar
- São Carlos
- 13565-905 Brazil
| | - K. T. de Oliveira
- Universidade Federal de São Carlos – UFSCar
- São Carlos
- 13565-905 Brazil
| | | | | | - K. P. M. Frin
- Universidade Federal do ABC - UFABC
- Santo Andre
- 09210-170 Brazil
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21
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Hille C, Kühn FE. Cationic rhenium complexes ligated with N-heterocyclic carbenes – an overview. Dalton Trans 2016; 45:15-31. [DOI: 10.1039/c5dt03641k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review provides an overview of the currently known cationic rhenium NHC complexes.
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Affiliation(s)
- Claudia Hille
- Chair of Inorganic Chemistry/Molecular Catalysis
- Department of Chemistry
- Catalysis Research Center
- Technische Universität München
- D-85747 Garching bei München
| | - Fritz E. Kühn
- Chair of Inorganic Chemistry/Molecular Catalysis
- Department of Chemistry
- Catalysis Research Center
- Technische Universität München
- D-85747 Garching bei München
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22
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Palladium(0) complexes of N-heterocyclic carbene ligands with dangling NMeC O functionalities: Synthesis, reactivity and application in Mizoroki–Heck reactions. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.07.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Chan KC, Chu WK, Yiu SM, Ko CC. Synthesis, characterization, photophysics and electrochemical study of luminescent iridium(III) complexes with isocyanoborate ligands. Dalton Trans 2015; 44:15135-44. [PMID: 25939478 DOI: 10.1039/c5dt00904a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of cyclometalated iridium(III) complexes with isocyanoborate ligands [Ir(R2ppy)2(L)(CNBR'3)] (R = H or F; L = CNC6H4Cl-4 or PPh3; R' = Ph, C6F5 or C6H4Cl-4), [Ir(biqb)(ppy)(CNBR''3)] (R'' = C6F5 or C6H4Cl-4) and {Ir(ppy)2(CN)n[CNB(C6F5)3]2-n}(-) (n = 0 or 1) have been synthesized and characterized. Three of these complexes have also been structurally characterized by X-ray crystallography. The photophysical and electrochemical properties of these complexes have been investigated. The effects of isocyanoborate ligands on the luminescence properties of these iridium(III) complexes are also described.
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Affiliation(s)
- Kin-Cheung Chan
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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24
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Boyarskiy VP, Bokach NA, Luzyanin KV, Kukushkin VY. Metal-Mediated and Metal-Catalyzed Reactions of Isocyanides. Chem Rev 2015; 115:2698-779. [DOI: 10.1021/cr500380d] [Citation(s) in RCA: 388] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Vadim P. Boyarskiy
- Institute of Chemistry, Saint Petersburg State University, 198504 Stary Petergof, Russian Federation
| | - Nadezhda A. Bokach
- Institute of Chemistry, Saint Petersburg State University, 198504 Stary Petergof, Russian Federation
| | - Konstantin V. Luzyanin
- Institute of Chemistry, Saint Petersburg State University, 198504 Stary Petergof, Russian Federation
| | - Vadim Yu. Kukushkin
- Institute of Chemistry, Saint Petersburg State University, 198504 Stary Petergof, Russian Federation
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25
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Chu WK, Wei XG, Yiu SM, Ko CC, Lau KC. Strongly Phosphorescent Neutral Rhenium(I) Isocyanoborato Complexes: Synthesis, Characterization, and Photophysical, Electrochemical, and Computational Studies. Chemistry 2014; 21:2603-12. [DOI: 10.1002/chem.201405291] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Indexed: 11/08/2022]
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26
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Yuan D, Huynh HV. Hetero-dicarbene Complexes of Palladium(II): Syntheses and Catalytic Activities. Organometallics 2014. [DOI: 10.1021/om500659v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Dan Yuan
- Department of Chemistry, National University of Singapore
, 3 Science Drive 3, Singapore
117543, Republic of Singapore
| | - Han Vinh Huynh
- Department of Chemistry, National University of Singapore
, 3 Science Drive 3, Singapore
117543, Republic of Singapore
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27
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Kuwata S, Ikariya T. Metal–ligand bifunctional reactivity and catalysis of protic N-heterocyclic carbene and pyrazole complexes featuring β-NH units. Chem Commun (Camb) 2014; 50:14290-300. [DOI: 10.1039/c4cc04457f] [Citation(s) in RCA: 132] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The metal–ligand bifunctional cooperation of protic N-heterocyclic carbene and pyrazole complexes bearing an NH unit at the position β to the metal is surveyed.
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Affiliation(s)
- Shigeki Kuwata
- Department of Applied Chemistry
- Graduate School of Science and Engineering
- Tokyo Institute of Technology
- Tokyo, Japan
| | - Takao Ikariya
- Department of Applied Chemistry
- Graduate School of Science and Engineering
- Tokyo Institute of Technology
- Tokyo, Japan
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