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Franz R, Gál D, Bruhn C, Kelemen Z, Pietschnig R. Gradual Coordination and Reversible P-P Bond Activation of a P 3 -Unit with Transition Metal Carbonyls. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306805. [PMID: 38161225 PMCID: PMC10953586 DOI: 10.1002/advs.202306805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/06/2023] [Indexed: 01/03/2024]
Abstract
Coordination of a stereochemically defined P3 -chain to a series of transition metal carbonyls [M(CO)x ]z- (M = Mn (x = 5, z = 1), Fe (x = 4, z = 2) or Co (x = 4, z = 1)) is explored using a [3]ferrocenophane scaffold. A gradual transition from η1 -, η2 - to η3 -coordination is observed where in the η2 -mode the terminal positions of the phosphorus chain are bridged. With an excess of cobalt carbonyl successive P-P bond activation and gradual separation of the central phosphorus atoms from the phosphorus chain has been observed. This process is reversible and with suitable reagents such as methyl lithium, the P3 -unit is regenerated in stereospecific manner. The bonding situation and steps of the gradual P-P bond activation are investigated by DFT calculations as well as experimental methods (e.g., NMR spectroscopy, X-ray crystallography).
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Affiliation(s)
- Roman Franz
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
| | - Dalma Gál
- Department of Inorganic and Analytical ChemistryBudapest University of Technology and EconomicsMűegyetem Rkp 3.Budapest1111Hungary
| | - Clemens Bruhn
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
| | - Zsolt Kelemen
- Department of Inorganic and Analytical ChemistryBudapest University of Technology and EconomicsMűegyetem Rkp 3.Budapest1111Hungary
| | - Rudolf Pietschnig
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
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2
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Ma Y, Hussein AA. Partner effect in accelerating pincer-co catalyzed nitrile hydroboration reactions. Phys Chem Chem Phys 2023; 25:3110-3120. [PMID: 36621824 DOI: 10.1039/d2cp03217a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The pincer-Co catalyzed nitrile hydroboration of nitrile has been presented as an elegant strategy to afford amine synthesis; however, ligand engineering is required. We show here a strategy to tune the catalytic behavior of the organometallic catalyst, as an alternative approach to ligand engineering, by means of computational investigations to understand the effect of partners such as (18-crown-6)K+, W(CO)3 and W(PMe3)3 on the reactivity of the pincer-Co catalyzed nitrile hydroboration reaction through π-coordination to the ligand aromatic ring. The extra additives bind the central phenyl ring of the ligand by either dispersion or chemical bonding. The electron-richness of the cobalt center is tuned by the partner, and follows the order (18-crown-6)K+ > W(PMe3)3 > no partner > W(CO)3. While the influence of the covalent W-containing partners parallels the electron-richness of the W, the non-covalent partner, (18-crown-6)K+, surprisingly increases the donor ability of the pincer ligand through the polarization effect. All the elementary steps involved in the nitrile hydroboration reaction are influenced by the partner, and the overall barrier is lowered by a surprisingly large amount of 4.9 kcal mol-1 in the presence of (18-crown-6)K+, suggesting a notable partner effect to be explored by experimentalists so that the reactivity of a catalyst can be tuned without ligand modification.
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Affiliation(s)
- Yumiao Ma
- BSJ Institute, Haidian, Beijing, 100084, People's Republic of China.,Hangzhou Yanqu Information Technology Co., Ltd. Xihu District, Hangzhou City, Zhejiang Province, 310003, People's Republic of China.
| | - Aqeel A Hussein
- Department of Medical Laboratory Science, College of Science, Komar University of Science and Technology, 46001 Sulaymaniyah, Kurdistan Region, Iraq.
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3
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Maser L, Vogt M, Langer R. Cationic ligands between σ-donation and hydrogen-bridge-bond-stabilisation of ancillary ligands in coinage metal complexes with protonated carbodiphosphoranes. Dalton Trans 2022; 51:17397-17404. [DOI: 10.1039/d2dt02338e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Protonated carbodiphosphoranes are demonstrated to act as σ- or hydrogen-bridge-bond donors in a series of copper and silver complexes.
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Affiliation(s)
- Leon Maser
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany
| | - Matthias Vogt
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Robert Langer
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany
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Stalder T, Krischer F, Steinert H, Neigenfind P, Däschlein-Gessner VH. Ylide-stabilized phosphenium cations: Impact of the substitution pattern on the coordination chemistry. Chemistry 2021; 28:e202104074. [PMID: 34890085 PMCID: PMC9303317 DOI: 10.1002/chem.202104074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Indexed: 11/05/2022]
Abstract
Although N‐heterocyclic phosphenium (NHP) cations have received considerable research interest due to their application in organocatalysis, including asymmetric synthesis, phosphenium cations with other substitution patterns have hardly been explored. Herein, the preparation of a series of ylide‐substituted cations of type [YPR]+ (with Y=Ph3PC(Ph), R=Ph, Cy or Y) and their structural and coordination properties are reported. Although the diylide‐substituted cation forms spontaneous from the chlorophosphine precursor, the monoylidylphosphenium ions required the addition of a halide‐abstraction reagent. The molecular structures of the cations reflected the different degrees of electron donation from the ylide to the phosphorus center depending on the second substituent. Molecular orbital analysis confirmed the stronger donor properties of the ylide systems compared to NHPs with the mono‐ylide substituted cations featuring a more pronounced electrophilicity. This was mirrored by the reaction of the cations towards gold chloride, in which only the diylide‐substituted cation [Y2P]+ formed the expected LAuCl]+ complex, while the monoylide‐substituted compounds reacted to the chlorophosphine ligands by transfer of the chloride from gold to the phosphorus center. These results demonstrate the tunability of ylide‐functionalized phosphorus cations, which should allow for further applications in coordination chemistry in the future.
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Affiliation(s)
- Tobias Stalder
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
| | - Felix Krischer
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
| | - Henning Steinert
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
| | - Philipp Neigenfind
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
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6
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Belli RG, Pantazis DA, McDonald R, Rosenberg L. Reversible Silylium Transfer between P-H and Si-H Donors. Angew Chem Int Ed Engl 2021; 60:2379-2384. [PMID: 33031611 DOI: 10.1002/anie.202011372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Indexed: 11/11/2022]
Abstract
The Mo=PR2 π* orbital in a Mo phosphenium complex acts as acceptor in a new PIII -based Lewis superacid. This Lewis acid (LA) participates in electrophilic Si-H abstraction from E3 SiH to give a Mo-bound secondary phosphine ligand, Mo-PR2 H. The resulting Et3 Si+ ion remains associated with the Mo complex, stabilized by η1 -P-H donation, yet undergoes rapid exchange with an η1 -Si-H adduct of free silane in solution. The equilibrium between these two adducts presents an opportunity to assess the role of this new LA in catalytic reactions of silanes: is the LA acting as a catalyst or as an initiator? Preliminary results suggest that a cycle including the Mo-bound phosphine-silylium adduct dominates in the catalytic hydrosilylation of acetophenone, relative to a putative cycle involving the silane-silylium adduct or "free" silylium.
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Affiliation(s)
- Roman G Belli
- Department of Chemistry, University of Victoria, P.O. Box 1700 STN CSC, Victoria, British Columbia, V8W 2Y2, Canada
| | - Dimitrios A Pantazis
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Robert McDonald
- X-ray Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Lisa Rosenberg
- Department of Chemistry, University of Victoria, P.O. Box 1700 STN CSC, Victoria, British Columbia, V8W 2Y2, Canada
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7
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Belli RG, Pantazis DA, McDonald R, Rosenberg L. Reversible Silylium Transfer between P‐H and Si‐H Donors. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Roman G. Belli
- Department of Chemistry University of Victoria P.O. Box 1700 STN CSC Victoria British Columbia V8W 2Y2 Canada
| | - Dimitrios A. Pantazis
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Robert McDonald
- X-ray Crystallography Laboratory Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Lisa Rosenberg
- Department of Chemistry University of Victoria P.O. Box 1700 STN CSC Victoria British Columbia V8W 2Y2 Canada
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8
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Hatzis GP, Oliemuller LK, Dickie DA, Thomas CM. N‐Heterocyclic Phosphido Complexes of Rhodium Supported by a Rigid Pincer Ligand. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Gillian P. Hatzis
- Department of Chemistry and Biochemistry The Ohio State University 100 W 18th Avenue Columbus 43210 Ohio OH USA
| | - Leah K. Oliemuller
- Department of Chemistry and Biochemistry The Ohio State University 100 W 18th Avenue Columbus 43210 Ohio OH USA
| | - Diane A. Dickie
- Department of Chemistry University of Virginia McCormick Road, PO Box 400319 22904 Charlottesville VA USA
| | - Christine M. Thomas
- Department of Chemistry and Biochemistry The Ohio State University 100 W 18th Avenue Columbus 43210 Ohio OH USA
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Izod K, Evans P, Waddell PG. An Acyclic Arsenium Cation Stabilised by a Single P-As π-Interaction and a Cyclic Diphosphinophosphonium Salt. Angew Chem Int Ed Engl 2019; 58:11007-11012. [PMID: 31157950 DOI: 10.1002/anie.201905922] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Indexed: 11/10/2022]
Abstract
Stable acyclic arsenium cations R2 As+ , isoelectronic analogues of germylenes, are rare in comparison to the corresponding phosphenium cations. The first example of a diphosphaarsenium salt, [{(Dipp)2 P}2 As][Al{OC(CF3 )3 }4 ]⋅1 1 / 2 PhMe, is described. This salt exhibits remarkable stability due to the delocalisation of a lone pair from a planar phosphorus centre into the vacant p-orbital at arsenic; the bonding in 2 has been probed by DFT calculations. An attempt to synthesise an analogous diphosphaphosphenium salt unexpectedly generated the cyclic phosphonium salt [cyclo-{(Mes)P}2 P(Mes)2 ][BArF 4 ]⋅CyMe through the cyclisation of a putative phosphine-substituted diphosphene cation intermediate.
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Affiliation(s)
- Keith Izod
- Main Group Chemistry Laboratories, School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Peter Evans
- Main Group Chemistry Laboratories, School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Paul G Waddell
- Main Group Chemistry Laboratories, School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
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10
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Izod K, Evans P, Waddell PG. An Acyclic Arsenium Cation Stabilised by a Single P–As π‐Interaction and a Cyclic Diphosphinophosphonium Salt. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Keith Izod
- Main Group Chemistry LaboratoriesSchool of ChemistryBedson BuildingNewcastle University Newcastle upon Tyne NE1 7RU UK
| | - Peter Evans
- Main Group Chemistry LaboratoriesSchool of ChemistryBedson BuildingNewcastle University Newcastle upon Tyne NE1 7RU UK
| | - Paul G. Waddell
- Main Group Chemistry LaboratoriesSchool of ChemistryBedson BuildingNewcastle University Newcastle upon Tyne NE1 7RU UK
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11
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Poitras AM, Bezpalko MW, Foxman BM, Thomas CM. Cooperative activation of O–H and S–H bonds across the Co–P bond of an N-heterocyclic phosphido complex. Dalton Trans 2019; 48:3074-3079. [DOI: 10.1039/c8dt05052j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A cobalt N-heterocyclic phosphido complex is shown to cleave element–hydrogen bonds via a metal–phosphorus ligand cooperative pathway.
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Affiliation(s)
- Andrew M. Poitras
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | | | | | - Christine M. Thomas
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
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12
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Volodarsky S, Dobrovetsky R. Ambiphilic geometrically constrained phosphenium cation. Chem Commun (Camb) 2018; 54:6931-6934. [PMID: 29862397 DOI: 10.1039/c8cc02423e] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work the synthesis of a geometrically constrained phosphenium cation is shown. In contrast to previously reported phosphenium cations, the geometrical constriction of the P-center in this cation makes it ambiphilic and reactive towards small molecules such as H2O, ROH and NH3.
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Affiliation(s)
- Solomon Volodarsky
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel.
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Itazaki M, Tsuchida N, Shigesato Y, Takano K, Nakazawa H. R/X exchange reactions in cis-[M(R)2{P(X)(NMeCH2)2}2] (M = Pd, Pt), via a phosphenium intermediate. Dalton Trans 2016; 45:19216-19220. [DOI: 10.1039/c6dt02314b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
R/X exchange reactions in cis-[M(R)2{P(X)(NMeCH2)2}2] (M = Pd, Pt; R = aryl, alkyl; X = Cl, Br) were achieved for the first time to give cis-[M(X)2{P(R)(NMeCH2)2}2]. DFT calculations suggested that the exchange reaction proceeds via a phosphenium intermediate.
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Affiliation(s)
- Masumi Itazaki
- Department of Chemistry
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Noriko Tsuchida
- Department of Chemistry and Biochemistry
- Graduate School of Humanities and Sciences
- Ochanomizu University
- Tokyo 112-8610
- Japan
| | - Yuka Shigesato
- Department of Chemistry
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Keiko Takano
- Department of Chemistry and Biochemistry
- Graduate School of Humanities and Sciences
- Ochanomizu University
- Tokyo 112-8610
- Japan
| | - Hiroshi Nakazawa
- Department of Chemistry
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
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Koppaka A, Yempally V, Zhu L, Fortman GC, Temprado M, Hoff CD, Captain B. Synthesis of [Pt(SnBut3)(IBut)(μ-H)]2, a Coordinatively Unsaturated Dinuclear Compound which Fragments upon Addition of Small Molecules to Form Mononuclear Pt–Sn Complexes. Inorg Chem 2015; 55:307-21. [DOI: 10.1021/acs.inorgchem.5b02441] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anjaneyulu Koppaka
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States
| | - Veeranna Yempally
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States
| | - Lei Zhu
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States
| | - George C. Fortman
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States
| | - Manuel Temprado
- Department of Analytical Chemistry, Physical
Chemistry and Chemical Engineering, Universidad de Alcalá, Madrid 28801, Spain
| | - Carl D. Hoff
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States
| | - Burjor Captain
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States
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15
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Bezpalko MW, Foxman BM, Thomas CM. Use of a Bidentate Ligand Featuring an N-Heterocyclic Phosphenium Cation (NHP+) to Systematically Explore the Bonding of NHP+ Ligands with Nickel. Inorg Chem 2015; 54:8717-26. [DOI: 10.1021/acs.inorgchem.5b01363] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mark W. Bezpalko
- Department of Chemistry, Brandeis University, 415 South Street MS 015, Waltham, Massachusetts 02454, United States
| | - Bruce M. Foxman
- Department of Chemistry, Brandeis University, 415 South Street MS 015, Waltham, Massachusetts 02454, United States
| | - Christine M. Thomas
- Department of Chemistry, Brandeis University, 415 South Street MS 015, Waltham, Massachusetts 02454, United States
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Dobrovetsky R, Takeuchi K, Stephan DW. Metal-free Lewis acid mediated dehydrocoupling of phosphines and concurrent hydrogenation. Chem Commun (Camb) 2015; 51:2396-8. [PMID: 25564430 DOI: 10.1039/c4cc09526j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stoichiometric reaction of trityl cation with two equivalents of Ph2PH affords the phosphine stabilized phosphenium salt [Ph2(H)PPPh2][B(C6F5)4] via hydride abstraction, while catalytic amounts of B(p-HC6F4)3 effects catalytic phosphine dehydrocoupling with the liberation of H2.
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Affiliation(s)
| | | | - Douglas W. Stephan
- Department of Chemistry
- Toronto
- Canada
- Department of Chemistry
- Faculty of Science
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17
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Maaliki C, Lepetit C, Duhayon C, Canac Y, Chauvin R. Carbene-Stabilized Phosphenium Oxides and Sulfides. Chemistry 2012; 18:16153-60. [DOI: 10.1002/chem.201202279] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 09/02/2012] [Indexed: 11/07/2022]
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Holthausen MH, Weigand JJ. Preparation of Cationic [(R2N)P5Cl]+-Cage Compounds from [(R2N)PCl]+ and P4. Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201200123] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Petuškova J, Bruns H, Alcarazo M. Cyclopropenylylidene-Stabilized Diaryl and Dialkyl Phosphenium Cations: Applications in Homogeneous Gold Catalysis. Angew Chem Int Ed Engl 2011; 50:3799-802. [DOI: 10.1002/anie.201100338] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Indexed: 11/06/2022]
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Petuškova J, Bruns H, Alcarazo M. Cyclopropenylyliden-stabilisierte Di(aryl/alkyl)phospheniumkationen: Anwendungen in der homogenen Gold-Katalyse. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100338] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Itazaki M, Shigesato Y, Nakazawa H. Platinum complexes with diamino-substituted phosphorus ligands: Synthesis, characterization, and their reactivity with a Lewis acid. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Dube JW, Farrar GJ, Norton EL, Szekely KLS, Cooper BFT, Macdonald CLB. A Convenient Method for the Preparation of N-Heterocyclic Bromophosphines: Excellent Precursors to the Corresponding N-Heterocyclic Phosphenium Salts. Organometallics 2009. [DOI: 10.1021/om900420g] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jonathan W. Dube
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - Gregory J. Farrar
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - Erin L. Norton
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - Kara L. S. Szekely
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - Benjamin F. T. Cooper
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - Charles L. B. Macdonald
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
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Itazaki M, Nakazawa H. Reactivity of Hydridomolybdenum Complex Having Diamino-Substituted Phosphite Ligand with Me 3SiOSO 2CF 3. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500902947724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Masumi Itazaki
- a Department of Chemistry, Graduate School of Science , Osaka City University , Osaka, Japan
| | - Hiroshi Nakazawa
- a Department of Chemistry, Graduate School of Science , Osaka City University , Osaka, Japan
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25
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Caputo CA, Jennings MC, Tuononen HM, Jones ND. Phospha-Fischer Carbenes: Synthesis, Structure, Bonding, and Reactions of Pd(0)− and Pt(0)−Phosphenium Complexes. Organometallics 2009. [DOI: 10.1021/om800973v] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christine A. Caputo
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7, and Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Michael C. Jennings
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7, and Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Heikki M. Tuononen
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7, and Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Nathan D. Jones
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7, and Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
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26
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Powell AB, Brown JR, Vasudevan KV, Cowley AH. Facile syntheses of thiophene-substituted 1,4-diazabutadiene (α-diimine) ligands and their conversion to phosphenium triiodide salts. Dalton Trans 2009:2521-7. [DOI: 10.1039/b820202h] [Citation(s) in RCA: 19] [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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Nakazawa H, Miyoshi K, Takano K. Transition Metal Complexes Containing Phosphenium and Phosphite Ligands: Formation and Theoretical Approach. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500701761581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Hiroshi Nakazawa
- a Department of Chemistry, Graduate School of Science , Osaka City University , Osaka, Japan
| | - Katsuhiko Miyoshi
- b Department of Chemistry, Graduate School of Science , Hiroshima University , Higashi-Hiroshima, Japan
| | - Keiko Takano
- c School of Integrated Science, Graduate School of Humanities and Science , Ochanomizu University , Tokyo, Japan
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Geometrical isomerization of fac/mer-Mo(CO)3(phosphite)3 and cis/trans-Mo(CO)4(phosphite)2 catalyzed by Me3SiOSO2CF3. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.02.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Caputo CA, Price JT, Jennings MC, McDonald R, Jones ND. N-Heterocyclic phosphenium cations: syntheses and cycloaddition reactions. Dalton Trans 2008:3461-9. [DOI: 10.1039/b801684d] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Slattery JM, Fish C, Green M, Hooper TN, Jeffery JC, Kilby RJ, Lynam JM, McGrady JE, Pantazis DA, Russell CA, Willans CE. Evidence for a SN2-Type Pathway for Phosphine Exchange in Phosphine–Phosphenium Cations, [R2PPR′3]+. Chemistry 2007; 13:6967-74. [PMID: 17541996 DOI: 10.1002/chem.200601742] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Abstraction of a Cl(-) ion from the P-chlorophospholes, R4C4PCl (R=Me, Et), produced the P--P bonded cations [R4C4P--P(Cl)C4R4]+, which reacted with PPh3 to afford X-ray crystallographically characterised phosphine-phosphenium cations [R4C4P(PPh3)]+ (R=Me, Et). Examination of the 31P-{1H} NMR spectrum of a solution (CH2Cl(2)) of [Et4C4P-(PPh3)]+ and PPh3 revealed broadening of the resonances due to both free and coordinated PPh3, and importantly it proved possible to measure the rate of exchange between PPh3 and [Et4C4P-(PPh3)]+ by line shape analysis (gNMR programmes). The results established second-order kinetics with DeltaS( not equal)=(-106.3+/-6.7) J mol(-1) K(-1), DeltaH( not equal)=(14.9+/-1.6) kJ mol(-1) and DeltaG( not equal) (298.15 K)=(46.6+/-2.6) kJ mol(-1), values consistent with a SN2-type pathway for the exchange process. This result contrasts with the dominant dissociative (S(N)1-type) pathway reported for the analogous exchange reactions of the [ArNCH2CH2N(Ar)P(PMe3)]+ ion, and to understand in more detail the factors controlling these two different reaction pathways, we have analysed the potential energy surfaces using density functional theory (DFT). The calculations reveal that, whilst phosphine exchange in [Et4C4P(PPh3)]+ and [ArNCH2CH2N(Ar)P(PMe3)](+) is superficially similar, the two cations differ significantly in both their electronic and steric requirements. The high electrophilicity of the phosphorus center in [Et4C4P]+, combined with strong pi-pi interactions between the ring and the incoming and outgoing phenyl groups of PPh3, favours the SN2-type over the SN1-type pathway in [Et4C4P(PPh3)]+. Effective pi-donation from the amide groups reduces the intrinsic electrophilicity of [ArNCH2CH2N(Ar)P]+, which, when combined with the steric bulk of the aryl groups, shifts the mechanism in favour of a dissociative SN1-type pathway.
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Affiliation(s)
- John M Slattery
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
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Organometallic Chemistry of Polypyridine Ligands I. ADVANCES IN HETEROCYCLIC CHEMISTRY 2007. [DOI: 10.1016/s0065-2725(06)93004-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Nakazawa H, Miyoshi Y, Katayama T, Mizuta T, Miyoshi K, Tsuchida N, Ono A, Takano K. Syntheses, Structures, and DFT Calculations of Phosphenium Phosphite Complexes of Molybdenum: Preference of Nonbridging Form to Bridging Form of a Donor Group. Organometallics 2006. [DOI: 10.1021/om060639x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroshi Nakazawa
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and School of Integrated Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Yasutaka Miyoshi
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and School of Integrated Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Takafumi Katayama
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and School of Integrated Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Tsutomu Mizuta
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and School of Integrated Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Katsuhiko Miyoshi
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and School of Integrated Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Noriko Tsuchida
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and School of Integrated Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Ayako Ono
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and School of Integrated Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Keiko Takano
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and School of Integrated Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan
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Dwyer CL, Kirk MM, Meyer WH, Janse van Rensburg W, Forman GS. Rotational Isomerism of a Phoban-Derived First-Generation Grubbs Catalyst. Organometallics 2006. [DOI: 10.1021/om051079p] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Catherine L. Dwyer
- Sasol Technology Research & Development, P.O. Box 1, Sasolburg 1947, South Africa, and Sasol Technology Research Laboratory, Sasol Technology (UK) Limited, St Andrews, Purdie Building, North Haugh, University of St Andrews, Fife, KY16 9ST, St Andrews, Scotland, United Kingdom
| | - Megan M. Kirk
- Sasol Technology Research & Development, P.O. Box 1, Sasolburg 1947, South Africa, and Sasol Technology Research Laboratory, Sasol Technology (UK) Limited, St Andrews, Purdie Building, North Haugh, University of St Andrews, Fife, KY16 9ST, St Andrews, Scotland, United Kingdom
| | - Wolfgang H. Meyer
- Sasol Technology Research & Development, P.O. Box 1, Sasolburg 1947, South Africa, and Sasol Technology Research Laboratory, Sasol Technology (UK) Limited, St Andrews, Purdie Building, North Haugh, University of St Andrews, Fife, KY16 9ST, St Andrews, Scotland, United Kingdom
| | - Werner Janse van Rensburg
- Sasol Technology Research & Development, P.O. Box 1, Sasolburg 1947, South Africa, and Sasol Technology Research Laboratory, Sasol Technology (UK) Limited, St Andrews, Purdie Building, North Haugh, University of St Andrews, Fife, KY16 9ST, St Andrews, Scotland, United Kingdom
| | - Grant S. Forman
- Sasol Technology Research & Development, P.O. Box 1, Sasolburg 1947, South Africa, and Sasol Technology Research Laboratory, Sasol Technology (UK) Limited, St Andrews, Purdie Building, North Haugh, University of St Andrews, Fife, KY16 9ST, St Andrews, Scotland, United Kingdom
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Ellis BD, Ragogna PJ, Macdonald CLB. Computational Insights into the Acceptor Chemistry of Phosphenium Cations. Inorg Chem 2004; 43:7857-67. [PMID: 15554651 DOI: 10.1021/ic0488738] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Phosphines are traditionally considered as Lewis bases or ligands in transition metal and main group complexes. Despite their electron-rich (lone pair-bearing) nature, an extensive coordination chemistry for Lewis acidic phosphorus centers is being developed; such chemistry provides a new synthetic approach for phosphorus-element bond formation, leading to new types of structures and modes of bonding. Complexes of Ph2P+ with a variety of donor elements (P, N, C) give experimentally short donor-acceptor bond lengths, when compared to other cationic phosphorus Lewis acid complexes. We have calculated that the energy of the lowest unoccupied molecular orbital (LUMO) in Ph2P+ is lower than that of (Me2N)2P+, which partially explains the greater exothermicity of reactions of donors with the diaryl acceptor. Furthermore, the energies required to distort the diphenylphosphenium cation from its ground-state geometry are significantly smaller than those of the diamido cations and, thus, enhance the exothermicity of donor coordination. These computational data, in conjunction with evidence from experimental solid-state structures, indicate that Ph2P+ is a significantly better Lewis acid relative to the more common diaminophosphenium analogues (R2N)2P+ and are used to elucidate the nature of the bonding in donor-phosphenium complexes.
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Affiliation(s)
- Bobby D Ellis
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
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NAKAZAWA HIROSHI. Transition Metal Complexes Bearing a Phosphenium Ligand. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2004. [DOI: 10.1016/s0065-3055(03)50002-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Nakazawa H, Kawasaki T, Miyoshi K, Suresh CH, Koga N. C−C Bond Cleavage of Acetonitrile by a Carbonyl Iron Complex with a Silyl Ligand. Organometallics 2003. [DOI: 10.1021/om0208319] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroshi Nakazawa
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and Graduate School of Information Science and Venture Business Laboratory, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan
| | - Takafumi Kawasaki
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and Graduate School of Information Science and Venture Business Laboratory, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan
| | - Katsuhiko Miyoshi
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and Graduate School of Information Science and Venture Business Laboratory, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan
| | - Cherumuttathu H. Suresh
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and Graduate School of Information Science and Venture Business Laboratory, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan
| | - Nobuaki Koga
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan, and Graduate School of Information Science and Venture Business Laboratory, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan
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