1
|
Stanković M, Skaro Bogojevic S, Kljun J, Milanović Ž, Stevanović NL, Lazic J, Vojnovic S, Turel I, Djuran MI, Glišić BĐ. Silver(I) complexes with voriconazole as promising anti-Candida agents. J Inorg Biochem 2024; 256:112572. [PMID: 38691971 DOI: 10.1016/j.jinorgbio.2024.112572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/09/2024] [Accepted: 04/19/2024] [Indexed: 05/03/2024]
Abstract
Recognizing that metal ions play an important role in modifying the pharmacological properties of known organic-based drugs, the present manuscript addresses the complexation of the antifungal agent voriconazole (vcz) with the biologically relevant silver(I) ion as a strategy for the development of new antimycotics. The synthesized silver(I) complexes with vcz were characterized by mass spectrometry, IR, UV-Vis and NMR spectroscopy and single-crystal X-ray diffraction analysis. The crystallographic results showed that complexes {[Ag(vcz)(H2O)]CH3SO3}n (1), {[Ag(vcz)2]BF4}n (2) and {[Ag(vcz)2]PF6}n (3) have polymeric structures in the solid state, in which silver(I) ions have a distorted tetrahedral geometry. On the other hand, DFT calculations revealed that the investigated silver(I) complexes 1-3 in DMSO exist as linear [Ag(vcz-N2)(vcz-N19)]+ (1a), [Ag(vcz-N2)(vcz-N4)]+ (2a) and [Ag(vcz-N4)2]+ (3a) species, respectively. The evaluated complexes showed an enhanced anti-Candida activity compared to the parent drug with minimal inhibitory concentration (MIC) values in the range of 0.02-1.05 μM. In comparison with vcz, the corresponding silver(I) complexes showed better activity in prevention hyphae and biofilm formation of C. albicans, indicating that they could be considered as promising agents against Candida that significantly inhibit its virulence. Also, these complexes are much better inhibitors of ergosterol synthesis in the cell membrane of C. albicans at the concentration of 0.5 × MIC. This is also confirmed by a molecular docking, which revealed that complexes 1a - 3a showed better inhibitory activity than vcz against the sterol 14α-demethylase enzyme cytochrome P450 (CYP51B), which plays a crucial role in the formation of ergosterol.
Collapse
Affiliation(s)
- Mia Stanković
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
| | - Sanja Skaro Bogojevic
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Jakob Kljun
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, SI-1000, Ljubljana, Slovenia
| | - Žiko Milanović
- University of Kragujevac, Institute for Information Technologies Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Nevena Lj Stevanović
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
| | - Jelena Lazic
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Sandra Vojnovic
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Iztok Turel
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, SI-1000, Ljubljana, Slovenia.
| | - Miloš I Djuran
- Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia.
| | - Biljana Đ Glišić
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia.
| |
Collapse
|
2
|
Ziółkowska A, Doroszuk J, Ponikiewski Ł. Overview of the Synthesis and Catalytic Reactivity of Transition Metal Complexes Based on C═P Bond Systems. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
|
3
|
Andrejević TP, Aleksic I, Kljun J, Počkaj M, Zlatar M, Vojnovic S, Nikodinovic-Runic J, Turel I, Djuran MI, Glišić BĐ. Copper(ii) and silver(i) complexes with dimethyl 6-(pyrazine-2-yl)pyridine-3,4-dicarboxylate (py-2pz): the influence of the metal ion on the antimicrobial potential of the complex. RSC Adv 2023; 13:4376-4393. [PMID: 36744286 PMCID: PMC9890663 DOI: 10.1039/d2ra07401j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/19/2023] [Indexed: 02/04/2023] Open
Abstract
Dimethyl 6-(pyrazine-2-yl)pyridine-3,4-dicarboxylate (py-2pz) was used as a ligand for the synthesis of new copper(ii) and silver(i) complexes, [CuCl2(py-2pz)]2 (1), [Cu(CF3SO3)(H2O)(py-2pz)2]CF3SO3·2H2O (2), [Ag(py-2pz)2]PF6 (3) and {[Ag(NO3)(py-2pz)]·0.5H2O} n (4). The complexes were characterized by spectroscopic and electrochemical methods, while their structures were determined by single crystal X-ray diffraction analysis. The X-ray analysis revealed the bidentate coordination mode of py-2pz to the corresponding metal ion via its pyridine and pyrazine nitrogen atoms in all complexes, while in polynuclear complex 4, the heterocyclic pyrazine ring of one py-2pz additionally behaves as a bridging ligand between two Ag(i) ions. DFT calculations were performed to elucidate the structures of the investigated complexes in solution. The antimicrobial potential of the complexes 1-4 was evaluated against two bacterial (Pseudomonas aeruginosa and Staphylococcus aureus) and two Candida (C. albicans and C. parapsilosis) species. Silver(i) complexes 3 and 4 have shown good antibacterial and antifungal properties with minimal inhibitory concentration (MIC) values ranging from 4.9 to 39.0 μM (3.9-31.2 μg mL-1). All complexes inhibited the filamentation of C. albicans and hyphae formation, while silver(i) complexes 3 and 4 had also the ability to inhibit the biofilm formation process of this fungus. The binding affinity of the complexes 1-4 with calf thymus DNA (ct-DNA) and bovine serum albumin (BSA) was studied by fluorescence emission spectroscopy to clarify the mode of their antimicrobial activity. Catechol oxidase biomimetic catalytic activity of copper(ii) complexes 1 and 2 was additionally investigated by using 3,5-di-tert-butylcatechol (3,5-DTBC) and o-aminophenol (OAP) as substrates.
Collapse
Affiliation(s)
- Tina P Andrejević
- Department of Chemistry, Faculty of Science, University of Kragujevac R. Domanovića 12 34000 Kragujevac Serbia
| | - Ivana Aleksic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade Vojvode Stepe 444a 11042 Belgrade Serbia
| | - Jakob Kljun
- Faculty of Chemistry and Chemical Technology, University of Ljubljana Večna Pot 113 Ljubljana SI-1000 Slovenia
| | - Marta Počkaj
- Faculty of Chemistry and Chemical Technology, University of Ljubljana Večna Pot 113 Ljubljana SI-1000 Slovenia
| | - Matija Zlatar
- Department of Chemistry, University of Belgrade-Institute of Chemistry, Technology and Metallurgy Njegoševa 12 11000 Belgrade Serbia
| | - Sandra Vojnovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade Vojvode Stepe 444a 11042 Belgrade Serbia
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade Vojvode Stepe 444a 11042 Belgrade Serbia
| | - Iztok Turel
- Faculty of Chemistry and Chemical Technology, University of Ljubljana Večna Pot 113 Ljubljana SI-1000 Slovenia
| | - Miloš I Djuran
- Serbian Academy of Sciences and Arts Knez Mihailova 35 11000 Belgrade Serbia
| | - Biljana Đ Glišić
- Department of Chemistry, Faculty of Science, University of Kragujevac R. Domanovića 12 34000 Kragujevac Serbia
| |
Collapse
|
4
|
Dahlen M, Kehry M, Lebedkin S, Kappes MM, Klopper W, Roesky PW. Bi- and trinuclear coinage metal complexes of a PNNP ligand featuring metallophilic interactions and an unusual charge separation. Dalton Trans 2021; 50:13412-13420. [PMID: 34477184 DOI: 10.1039/d1dt02226a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A selective synthesis of bi- and trinuclear complexes featuring a tetradentate monoanionic PNNP ligand is presented. The binuclear coinage metal complexes show a typical fourfold coordination for Cu and Ag, which changes to a bifold coordination for Au. The latter is accompanied by an unusual charge separation. Optical properties are investigated using photoluminescence spectroscopy and complemented by time-dependent density-functional-theory calculations. All compounds demonstrate clearly distinguished features dependent on the metals chosen and differences in the complex scaffold.
Collapse
Affiliation(s)
- Milena Dahlen
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Max Kehry
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Sergei Lebedkin
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Manfred M Kappes
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany.,Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Wim Klopper
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany.,Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| |
Collapse
|
5
|
Ašanin DP, Skaro Bogojevic S, Perdih F, Andrejević TP, Milivojevic D, Aleksic I, Nikodinovic-Runic J, Glišić BĐ, Turel I, Djuran MI. Structural Characterization, Antimicrobial Activity and BSA/DNA Binding Affinity of New Silver(I) Complexes with Thianthrene and 1,8-Naphthyridine. Molecules 2021; 26:1871. [PMID: 33810316 PMCID: PMC8037121 DOI: 10.3390/molecules26071871] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/23/2021] [Accepted: 03/23/2021] [Indexed: 11/16/2022] Open
Abstract
Three new silver(I) complexes [Ag(NO3)(tia)(H2O)]n (Ag1), [Ag(CF3SO3)(1,8-naph)]n (Ag2) and [Ag2(1,8-naph)2(H2O)1.2](PF6)2 (Ag3), where tia is thianthrene and 1,8-naph is 1,8-naphthyridine, were synthesized and structurally characterized by different spectroscopic and electrochemical methods and their crystal structures were determined by single-crystal X-ray diffraction analysis. Their antimicrobial potential was evaluated against four bacterial and three Candida species, and the obtained results revealed that these complexes showed significant activity toward the Gram-positive Staphylococcus aureus, Gram-negative Pseudomonas aeruginosa and the investigated Candida species with minimal inhibitory concentration (MIC) values in the range 1.56-7.81 μg/mL. On the other hand, tia and 1,8-naph ligands were not active against the investigated strains, suggesting that their complexation with Ag(I) ion results in the formation of antimicrobial compounds. Moreover, low toxicity of the complexes was detected by in vivo model Caenorhabditis elegans. The interaction of the complexes with calf thymus DNA (ct-DNA) and bovine serum albumin (BSA) was studied to evaluate their binding affinity towards these biomolecules for possible insights into the mode of antimicrobial activity. The binding affinity of Ag1-3 to BSA was higher than that for DNA, indicating that proteins could be more favorable binding sites for these complexes in comparison to the nucleic acids.
Collapse
Affiliation(s)
- Darko P. Ašanin
- Department of Science, Institute for Information Technologies Kragujevac, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia;
| | - Sanja Skaro Bogojevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.S.B.); (D.M.); (I.A.)
| | - Franc Perdih
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia;
| | - Tina P. Andrejević
- Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia;
| | - Dusan Milivojevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.S.B.); (D.M.); (I.A.)
| | - Ivana Aleksic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.S.B.); (D.M.); (I.A.)
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.S.B.); (D.M.); (I.A.)
| | - Biljana Đ. Glišić
- Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia;
| | - Iztok Turel
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia;
| | - Miloš I. Djuran
- Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia
| |
Collapse
|
6
|
Takeuchi K, Tanaka Y, Tanigawa I, Ozawa F, Choi JC. Cu(i) complex bearing a PNP-pincer-type phosphaalkene ligand with a bulky fused-ring Eind group: properties and applications to FLP-type bond activation and catalytic CO 2 reduction. Dalton Trans 2020; 49:3630-3637. [PMID: 32129407 DOI: 10.1039/d0dt00276c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein, we report the synthesis of [Cu(Eind2-BPEP)][PF6] (2) (Eind2-BPEP = 2,6-bis(2-Eind-2-phosphaethenyl)pyridine, Eind = 1,1,3,3,5,5,7,7-octaethyl-1,2,3,5,6,7-hexahydro-s-indacen-4-yl), a three-coordinated Cu(i) complex bearing a PNP-pincer-type phosphaalkene ligand with bulky fused-ring Eind groups. The Gutmann-Beckett test revealed that complex 2 is highly Lewis acidic and comparable in strength to B(C6F5)3, which is a relatively strong Lewis acid. In addition, 2 is more Lewis acidic than [Cu(Mes*2-BPEP)][PF6] (3), the analogous complex with less-bulky Mes* instead of Eind groups. DFT calculations using model compounds revealed that the higher Lewis acidity of 2 compared to 3 is not due to the electronic effects of the ligand, but due to a reduction in the LUMO energy caused by the steric effect of the bulky Eind groups. When combined with a tertiary amine, the highly Lewis acidic and bulky 2 exhibits the reactivity of a frustrated Lewis pair (FLP) and can activate hydrogen and phenylacetylene. Complexes 2 and 3 were found to catalyze the hydrogenation and hydrosilylation of CO2 in the presence of DBU under relatively mild conditions.
Collapse
Affiliation(s)
- Katsuhiko Takeuchi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan.
| | - Yuto Tanaka
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Ippei Tanigawa
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Fumiyuki Ozawa
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Jun-Chul Choi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan.
| |
Collapse
|
7
|
Gopalakrishnan M, Krittametaporn N, Yoshinari N, Konno T, Sangtrirutnugul P. Anion-templated assembly of multinuclear copper( ii)–triazole complexes. NEW J CHEM 2020. [DOI: 10.1039/d0nj02832k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Anions were used as templates to construct copper(ii) clusters with different architectures.
Collapse
Affiliation(s)
- Mohan Gopalakrishnan
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok
| | - Nuttaporn Krittametaporn
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok
| | - Nobuto Yoshinari
- Department of Chemistry
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Takumi Konno
- Department of Chemistry
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Preeyanuch Sangtrirutnugul
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok
| |
Collapse
|
8
|
Nakashige ML, Loristo JIP, Wong LS, Gurr JR, O'Donnell TJ, Yoshida WY, Rheingold AL, Hughes RP, Cain MF. E-Selective Synthesis and Coordination Chemistry of Pyridine-Phosphaalkenes: Five Ligands Produce Four Distinct Types of Ru(II) Complexes. Organometallics 2019; 38:3338-3348. [PMID: 33299263 DOI: 10.1021/acs.organomet.9b00425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pyridine-phosphaalkene (PN) ligands 2a-e were prepared in an E-selective fashion using phospha-Wittig methodology. Treatment of these five ligands, varying only in their 6-substituent with RuCl2(PPh3)3, produced four distinct types of coordination complexes: pyridine-phosphaalkene-derived 3b,d, cyclized 4e, and six-coordinate 5a and 6c. Prolonged heating of 3b,d in THF resulted in C-H activation of the Mes* group and cyclization to give 4b,d featuring a bidentate pyridine-phospholane ligand bound to the metal center. Complex 5a, also possessing a newly formed phospholane ring, contained a different spatial arrangement of donors to Ru(II) with an agostic Ru-H-C interaction serving as the sixth donor to the transition metal center. Ligands 2b,d,e and Ru(II) complexes 3b, 4b,e and 5a were all characterized by X-ray crystallography. Six-coordinate 6c featured a structure similar to 4b,d,e, but with the CF3 substituent acting as a weakly bound sixth ligand to the Ru(II) center, as observed by 31P{1H} and19F NMR spectroscopy. The calculated structure of 6c established that the closest Ru- - -F contact was at 2.978 Å.
Collapse
Affiliation(s)
- Mika L Nakashige
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Jarin I P Loristo
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Lesley S Wong
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Joshua R Gurr
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Timothy J O'Donnell
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Wesley Y Yoshida
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Arnold L Rheingold
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Russell P Hughes
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Matthew F Cain
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| |
Collapse
|
9
|
Willot J, Lugan N, Valyaev DA. Binuclear Cu(I) and Mn(0) Complexes with a Tridentate Pyridine-NHC-Phosphane Ligand in a µ-κ2
Ĉ,N
-M;κ1
P
-M Coordination Mode. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900628] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jérémy Willot
- LCC-CNRS; Université de Toulouse; CNRS, UPS, Toulouse, France; 205 route de Narbonne 31077 Toulouse Cedex 4 France
| | - Noël Lugan
- LCC-CNRS; Université de Toulouse; CNRS, UPS, Toulouse, France; 205 route de Narbonne 31077 Toulouse Cedex 4 France
| | - Dmitry A. Valyaev
- LCC-CNRS; Université de Toulouse; CNRS, UPS, Toulouse, France; 205 route de Narbonne 31077 Toulouse Cedex 4 France
| |
Collapse
|
10
|
Alig L, Fritz M, Schneider S. First-Row Transition Metal (De)Hydrogenation Catalysis Based On Functional Pincer Ligands. Chem Rev 2018; 119:2681-2751. [PMID: 30596420 DOI: 10.1021/acs.chemrev.8b00555] [Citation(s) in RCA: 503] [Impact Index Per Article: 83.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The use of 3d metals in de/hydrogenation catalysis has emerged as a competitive field with respect to "traditional" precious metal catalyzed transformations. The introduction of functional pincer ligands that can store protons and/or electrons as expressed by metal-ligand cooperativity and ligand redox-activity strongly stimulated this development as a conceptual starting point for rational catalyst design. This review aims at providing a comprehensive picture of the utilization of functional pincer ligands in first-row transition metal hydrogenation and dehydrogenation catalysis and related synthetic concepts relying on these such as the hydrogen borrowing methodology. Particular emphasis is put on the implementation and relevance of cooperating and redox-active pincer ligands within the mechanistic scenarios.
Collapse
Affiliation(s)
- Lukas Alig
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Maximilian Fritz
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Sven Schneider
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| |
Collapse
|
11
|
Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
| |
Collapse
|
12
|
Taguchi HO, Tanigawa I, Takeuchi K, Ozawa F. On the Geometrical Stability of Square-Planar Platinum(0) Complexes That Bear a PNP-Pincer-Type Phosphaalkene Ligand (Eind 2 -BPEP). Chemistry 2018; 24:17055-17061. [PMID: 30350899 DOI: 10.1002/chem.201803097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/05/2018] [Indexed: 11/12/2022]
Abstract
The four-coordinate Pt0 complex [Pt(PPh3 )(Eind2 -BPEP)] (Eind=1,1,3,3,5,5,7,7-octaethyl-1,2,3,5,6,7-hexahydro-s-indacen-4-yl; BPEP=2,6-bis(1-phenyl-2-phosphaethenyl)pyridine), which bears a PNP-pincer-type phosphaalkene ligand (Eind2 -BPEP; PNP=N,N-bis(diphenylphosphine)-2,6-diaminopyridine), were found to adopt a square-planar configuration around the Pt center (τ4 =0.11). This coordination geometry is very uncommon for formal d10 complexes. In this study, a series of ligands with different electronic properties (i.e., DMAP, 2,6-lutidine, PMe3 , tBuNC, and CO) were introduced in place of PPh3 , and their effects on the coordination geometry were examined. X-ray diffraction analysis revealed that all complexes adopted a square-planar configuration (τ4 =0.20-0.27). In contrast, DFT calculations indicated that the geometrical stability towards distortion around Pt varied with the ligand. The complexes with pyridine-based ligands had rigid planar structures, whereas those with π-accepting ligands, such as CO, were relatively flexible towards distortion. The electronic effects of the ligands were reflected in the spectroscopic properties of the complexes, which showed a large color change in the near-infrared region.
Collapse
Affiliation(s)
- Hiro-Omi Taguchi
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research & IRCCS, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Ippei Tanigawa
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research & IRCCS, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Katsuhiko Takeuchi
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research & IRCCS, Kyoto University, Uji, Kyoto 611-0011, Japan.,Present Address: Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan
| | - Fumiyuki Ozawa
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research & IRCCS, Kyoto University, Uji, Kyoto 611-0011, Japan
| |
Collapse
|
13
|
Leischner T, Spannenberg A, Junge K, Beller M. Molecular Defined Molybdenum–Pincer Complexes and Their Application in Catalytic Hydrogenations. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00410] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Leischner
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Kathrin Junge
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| |
Collapse
|
14
|
Ozawa F, Nakajima Y. PNP-Pincer-Type Phosphaalkene Complexes of Late Transition Metals. CHEM REC 2016; 16:2314-2323. [PMID: 27456074 DOI: 10.1002/tcr.201600054] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Indexed: 01/31/2023]
Abstract
This account summarizes our recent studies on PNP-pincer-type phosphaalkene complexes. Phosphaalkenes with a P=C bond possess an extremely low-lying π* orbital and have a marked tendency to engage in strong π back-bonding with transition metals. This particular ligand property provides PNP-pincer complexes with unique structures and reactivities. 2,6-Bis(phosphaethenyl)pyridine leads to the isolation of coordinatively unsaturated complexes of Fe(I) and Cu(I); the former adopts a trigonal monopyramidal configuration, whereas the latter has a strong affinity for PF6- and SbF6- as non-coordinating anions. Unsymmetrical PNP-pincer-type phosphaalkene complexes of Ir(I) bearing a dearomatized pyridine unit instantly cleave the N-H bond of NH3 and the C-H bond of MeCN at room temperature. The dearomatized iridium complexes catalyze the dehydrative coupling of amines with alcohols to afford N-alkylated amines and imines in high yields.
Collapse
Affiliation(s)
- Fumiyuki Ozawa
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research Kyoto University, Uji, Kyoto, 611-0011, Japan.
| | - Yumiko Nakajima
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
| |
Collapse
|
15
|
Castro-Rodrigo R, Chakraborty S, Munjanja L, Brennessel WW, Jones WD. Synthesis, Characterization, and Reactivities of Molybdenum and Tungsten PONOP Pincer Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00461] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ruth Castro-Rodrigo
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Sumit Chakraborty
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Lloyd Munjanja
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William W. Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William D. Jones
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| |
Collapse
|
16
|
|
17
|
Miura-Akagi PM, Nakashige ML, Maile CK, Oshiro SM, Gurr JR, Yoshida WY, Royappa AT, Krause CE, Rheingold AL, Hughes RP, Cain MF. Synthesis of a Tris(phosphaalkene)phosphine Ligand and Fundamental Organometallic Reactions on Its Sterically Shielded Metal Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00250] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Preston M. Miura-Akagi
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Mika L. Nakashige
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Caitlin K. Maile
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Shelly M. Oshiro
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Joshua R. Gurr
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Wesley Y. Yoshida
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - A. Timothy Royappa
- Department
of Chemistry, University of California, San Diego, 9500 Gilman
Drive, La Jolla, California 92093, United States
| | - Colleen E. Krause
- Department
of Chemistry, University of Hartford, 200 Bloomfield Avenue, West Hartford, Connecticut 06117, United States
| | - Arnold L. Rheingold
- Department
of Chemistry, University of California, San Diego, 9500 Gilman
Drive, La Jolla, California 92093, United States
| | - Russell P. Hughes
- 6128
Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Matthew F. Cain
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| |
Collapse
|
18
|
Serin SC, Pick FS, Dake GR, Gates DP. Copper(I) Complexes of Pyridine-Bridged Phosphaalkene-Oxazoline Pincer Ligands. Inorg Chem 2016; 55:6670-8. [DOI: 10.1021/acs.inorgchem.6b00917] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Spencer C. Serin
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia, Canada
| | - Fraser S. Pick
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia, Canada
| | - Gregory R. Dake
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia, Canada
| | - Derek P. Gates
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia, Canada
| |
Collapse
|
19
|
Taguchi HO, Sasaki D, Takeuchi K, Tsujimoto S, Matsuo T, Tanaka H, Yoshizawa K, Ozawa F. Unsymmetrical PNP-Pincer Type Phosphaalkene Ligands Protected by a Fused-Ring Bulky Eind Group: Synthesis and Applications to Rh(I) and Ir(I) Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00113] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Hiro-omi Taguchi
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Daichi Sasaki
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Katsuhiko Takeuchi
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Shota Tsujimoto
- Department
of Applied Chemistry, Faculty of Science and Engineering, Kinki University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Tsukasa Matsuo
- Department
of Applied Chemistry, Faculty of Science and Engineering, Kinki University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Hiromasa Tanaka
- Institute
for Materials Chemistry and Engineering, International Research Center
for Molecular Systems, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute
for Materials Chemistry and Engineering, International Research Center
for Molecular Systems, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
| | - Fumiyuki Ozawa
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| |
Collapse
|
20
|
Magnuson KW, Oshiro SM, Gurr JR, Yoshida WY, Gembicky M, Rheingold AL, Hughes RP, Cain MF. Streamlined Preparation and Coordination Chemistry of Hybrid Phosphine–Phosphaalkene Ligands. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kevin W. Magnuson
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Shelly M. Oshiro
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Joshua R. Gurr
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Wesley Y. Yoshida
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Milan Gembicky
- Department
of Chemistry, University of California, San Diego, 9500 Gilman
Drive, La Jolla, California 92093, United States
| | - Arnold L. Rheingold
- Department
of Chemistry, University of California, San Diego, 9500 Gilman
Drive, La Jolla, California 92093, United States
| | - Russell P. Hughes
- 6128
Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Matthew F. Cain
- Department
of Chemistry, University of Hawai‘i at Ma̅noa, 2545
McCarthy Mall, Honolulu, Hawaii 96822, United States
| |
Collapse
|
21
|
Cheung PM, Berger RF, Zakharov LN, Gilbertson JD. Square planar Cu(i) stabilized by a pyridinediimine ligand. Chem Commun (Camb) 2016; 52:4156-9. [DOI: 10.1039/c6cc00271d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A set of distorted square planar Cu(i) complexes were synthesized and characterized utilizing the sterically encumbering pyridinediimine ligand, iPrPDI (where iPrPDI = 2,6-(2,6-iPr2C6H3NCMe)2C5H3N).
Collapse
Affiliation(s)
- Pui Man Cheung
- Department of Chemistry
- Western Washington University
- Bellingham
- USA
| | - Robert F. Berger
- Department of Chemistry
- Western Washington University
- Bellingham
- USA
| | | | | |
Collapse
|
22
|
Nakajima Y, Tsuchimoto T, Chang YH, Takeuchi K, Ozawa F. Reactions of [Cu(X)(BPEP-Ph)] (X = PF6, SbF6) with silyl compounds. Cooperative bond activation involving non-coordinating anions. Dalton Trans 2016; 45:2079-84. [DOI: 10.1039/c5dt03166d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bond activation of silyl compounds, assisted by the cooperative action of non-coordinating anions, is achieved using Cu(i) complexes coordinated with a PNP-pincer type phosphaalkene ligand, [Cu(X)(BPEP-Ph)] (X = PF6, SbF6).
Collapse
Affiliation(s)
- Yumiko Nakajima
- Interdisciplinary Research Center for Catalytic Chemistry
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Takahiro Tsuchimoto
- International Research Center for Elements Science (IRCELS)
- Institute for Chemical Research
- Kyoto University
- Japan
| | - Yung-Hung Chang
- International Research Center for Elements Science (IRCELS)
- Institute for Chemical Research
- Kyoto University
- Japan
| | - Katsuhiko Takeuchi
- International Research Center for Elements Science (IRCELS)
- Institute for Chemical Research
- Kyoto University
- Japan
| | - Fumiyuki Ozawa
- International Research Center for Elements Science (IRCELS)
- Institute for Chemical Research
- Kyoto University
- Japan
| |
Collapse
|
23
|
Lin YF, Ichihara N, Nakajima Y, Ozawa F. Disproportionation of Bis(phosphaethenyl)pyridine Iron(I) Bromide Induced by tBuNC. Organometallics 2014. [DOI: 10.1021/om500901a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ya-Fan Lin
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Nobuko Ichihara
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yumiko Nakajima
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Fumiyuki Ozawa
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| |
Collapse
|
24
|
Takeuchi K, Minami A, Nakajima Y, Ozawa F. Synthesis and Structures of Nickel Complexes with a PN-Chelate Phosphaalkene Ligand. Organometallics 2014. [DOI: 10.1021/om500685x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Katsuhiko Takeuchi
- International
Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Ataru Minami
- International
Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yumiko Nakajima
- International
Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Fumiyuki Ozawa
- International
Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| |
Collapse
|
25
|
Rawe BW, Chun CP, Gates DP. Anionic polymerisation of phosphaalkenes bearing polyaromatic chromophores: phosphine polymers showing “turn-on” emission selectively with peroxide. Chem Sci 2014. [DOI: 10.1039/c4sc02133a] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
26
|
Kumar S, Mani G, Dutta D, Mishra S. Structural Diversity of Copper(I) Complexes Formed by Pyrrole- and Dipyrrolylmethane-Based Diphosphine Ligands with Cu–X···HN Hydrogen Bonds. Inorg Chem 2014; 53:700-9. [PMID: 24392950 DOI: 10.1021/ic402253y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Shanish Kumar
- Department
of Chemistry, Indian Institute of Technology − Kharagpur, Kharagpur, West Bengal, India 721 302
| | - Ganesan Mani
- Department
of Chemistry, Indian Institute of Technology − Kharagpur, Kharagpur, West Bengal, India 721 302
| | - Debodyuti Dutta
- Department
of Chemistry, Indian Institute of Technology − Kharagpur, Kharagpur, West Bengal, India 721 302
| | - Sabyashachi Mishra
- Department
of Chemistry, Indian Institute of Technology − Kharagpur, Kharagpur, West Bengal, India 721 302
| |
Collapse
|
27
|
Mizuta S, Verhoog S, Wang X, Shibata N, Gouverneur V, Médebielle M. Redox chemistry of trifluoromethyl sulfonium salts as CF3 radical sources. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.07.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
28
|
Chang YH, Nakajima Y, Tanaka H, Yoshizawa K, Ozawa F. Facile N-H bond cleavage of ammonia by an iridium complex bearing a noninnocent PNP-pincer type phosphaalkene ligand. J Am Chem Soc 2013; 135:11791-4. [PMID: 23895386 DOI: 10.1021/ja407163z] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A novel PNP-pincer type phosphaalkene complex of iridium bearing a dearomatized pyridine unit (3) has been prepared. Complex 3 rapidly reacts with ammonia at room temperature to afford a parent amido complex in high yield. DFT calculations indicate that the phosphaalkene unit with a strong π-accepting property effectively facilitates the N-H bond cleavage of ammonia via metal-ligand cooperation.
Collapse
Affiliation(s)
- Yung-Hung Chang
- International Research Center for Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | | | | | | | | |
Collapse
|
29
|
Nakajima Y, Okamoto Y, Chang YH, Ozawa F. Synthesis, Structures, and Reactivity of Ruthenium Complexes with PNP-pincer Type Phosphaalkene Ligands. Organometallics 2013. [DOI: 10.1021/om400126v] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yumiko Nakajima
- International Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- JST-PRESTO, Uji, Kyoto 611-0011, Japan
| | - Yuki Okamoto
- International Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yung-Hung Chang
- International Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Fumiyuki Ozawa
- International Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| |
Collapse
|
30
|
Chang YH, Nakajima Y, Ozawa F. A Bis(phosphaethenyl)pyridine Complex of Iridium(I): Synthesis and Catalytic Application to N-Alkylation of Amines with Alcohols. Organometallics 2013. [DOI: 10.1021/om4000743] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yung-Hung Chang
- International
Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yumiko Nakajima
- International
Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- JST-PRESTO, Uji, Kyoto 611-0011, Japan
| | - Fumiyuki Ozawa
- International
Research Center
for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| |
Collapse
|
31
|
Dugal-Tessier J, Serin SC, Castillo-Contreras EB, Conrad ED, Dake GR, Gates DP. Enantiomerically Pure Phosphaalkene-Oxazolines (PhAk-Ox): Synthesis, Scope and Copolymerization with Styrene. Chemistry 2012; 18:6349-59. [PMID: 22489021 DOI: 10.1002/chem.201103887] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 02/08/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Julien Dugal-Tessier
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada
| | | | | | | | | | | |
Collapse
|
32
|
Nakajima Y, Ozawa F. Redox Chemistry of Bis(phosphaethenyl)pyridine Iron Complexes. Organometallics 2012. [DOI: 10.1021/om201280z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yumiko Nakajima
- International Research Center of Elements Science (IRCELS),
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Fumiyuki Ozawa
- International Research Center of Elements Science (IRCELS),
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| |
Collapse
|
33
|
Kundu S, Brennessel WW, Jones WD. Synthesis and Reactivity of New Ni, Pd, and Pt 2,6-Bis(di-tert-butylphosphinito)pyridine Pincer Complexes. Inorg Chem 2011; 50:9443-53. [DOI: 10.1021/ic201102v] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sabuj Kundu
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William W. Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William D. Jones
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| |
Collapse
|