1
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Tkachenko P, Topchiyan P, Berdyugin S, Tkachev S, Maximovskiy E, Sheven D, Vasilchenko D. (Me 4N) 2[Pt(CO 3) 2(OH) 2]: The Isolated Pt IVO 6 Carbonato-Complex. Inorg Chem 2024; 63:12042-12053. [PMID: 38946343 DOI: 10.1021/acs.inorgchem.4c00909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
The first fully inorganic Pt(IV) carbonato-complex trans-[Pt(CO3)2(OH)2]2- with a {PtO6} coordination sphere was isolated as the (Me4N)2[Pt(CO3)2(OH)2] (1) salt. The compound 1 was characterized using single-crystal and powder X-ray diffraction, Raman spectroscopy, infrared spectroscopy (FTIR), electrospray ionization mass spectrometry (ESI-MS), nuclear magnetic resonance spectroscopy (NMR), and thermogravimetric analysis (TG). Density functional theory (DFT) calculations were also performed to analyze the spectral features of the complex. 1 crystallizes in the triclinic system (P-1) with a Z of 1. The trans-[Pt(CO3)2(OH)2]2- anion has axial hydroxo ligands and κ2-CO3 ligands, which form an equatorial plane. This anionic complex exhibits notable stability in aqueous solutions, while the axial hydroxo ligand can be readily modified, as exemplified by the acylation of the trans-[Pt(CO3)2(OH)2]2- into trans-[Pt(CO3)2(OAc)2]2- anion. Furthermore, it has been shown that rigid and glittering platinum coatings can be electrochemically deposited from an aqueous solution of 1 without the addition of surfactants.
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Affiliation(s)
- Pavel Tkachenko
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russia
| | - Polina Topchiyan
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russia
| | - Semen Berdyugin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russia
| | - Sergey Tkachev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russia
| | - Eugene Maximovskiy
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russia
| | - Dmitiy Sheven
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russia
| | - Danila Vasilchenko
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russia
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2
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Heterotridentate organophosphines in Pt(κ3–P1C1P2)(X), (X=H, OL, NL, CL, Cl, Br or I) and Pt(κ3–P1P2C1)(Cl) derivatives-structural aspects. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Huang JJ, Zhang XQ, Yang JJ, Gong JF, Song MP. Chiral (phosphine)-(imidazoline) PCN pincer palladium(II) complexes: synthesis and application in asymmetric hydrophosphination of 2-alkenoylpyridines with diphenylphosphine. Dalton Trans 2022; 51:8350-8367. [DOI: 10.1039/d2dt01078j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of new chiral PCN pincer Pd(II) complexes 3a−l with aryl-based (phosphine)-(imidazoline) ligands were conveniently synthesized from readily available starting materials with the key step being phosphination/C−H palladation reaction....
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4
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Takeuchi K, Chen MY, Yuan HY, Koizumi H, Matsumoto K, Fukaya N, Choe YK, Shigeyasu S, Matsumoto S, Hamura S, Choi JC. N-Aryl and N-Alkyl Carbamates from 1 Atmosphere of CO 2. Chemistry 2021; 27:18066-18073. [PMID: 34779056 DOI: 10.1002/chem.202103587] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Indexed: 11/09/2022]
Abstract
We have successfully isolated and characterized the zinc carbamate complex (phen)Zn(OAc)(OC(=O)NHPh) (1; phen=1,10-phenanthroline), formed as an intermediate during the Zn(OAc)2 /phen-catalyzed synthesis of organic carbamates from CO2 , amines, and the reusable reactant Si(OMe)4 . Density functional theory calculations revealed that the direct reaction of 1 with Si(OMe)4 proceeds via a five-coordinate silicon intermediate, forming organic carbamates. Based on these results, the catalytic system was improved by using Si(OMe)4 as the reaction solvent and additives like KOMe and KF, which promote the formation of the five-coordinated silicon species. This sustainable and effective method can be used to synthesize various N-aryl and N-alkyl carbamates, including industrially important polyurethane raw materials, starting from CO2 under atmospheric pressure.
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Affiliation(s)
- Katsuhiko Takeuchi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Ibaraki, Japan
| | - Ming-Yu Chen
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Ibaraki, Japan.,Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8573, Ibaraki, Japan
| | - Hao-Yu Yuan
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Ibaraki, Japan
| | - Hiroki Koizumi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Ibaraki, Japan
| | - Kazuhiro Matsumoto
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Ibaraki, Japan
| | - Norihisa Fukaya
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Ibaraki, Japan
| | - Yoong-Kee Choe
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Ibaraki, Japan
| | - Shinji Shigeyasu
- Polyurethane Research Laboratory Tosoh Corporation, 1-8 Kasumi, Yokkaichi, Mie, 510-8540, Japan
| | - Seiji Matsumoto
- Tosoh Corporation, 3-8-2 Shiba, Minato-ku, Tokyo, 105-8623, Japan
| | - Satoshi Hamura
- Tosoh Corporation, 3-8-2 Shiba, Minato-ku, Tokyo, 105-8623, Japan
| | - Jun-Chul Choi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Ibaraki, Japan.,Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8573, Ibaraki, Japan
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5
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Mousa AH, Polukeev AV, Hansson J, Wendt OF. Carboxylation of the Ni–Me Bond in an Electron-Rich Unsymmetrical PCN Pincer Nickel Complex. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00817] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Abdelrazek H. Mousa
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
| | - Alexey V. Polukeev
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
| | - Josefine Hansson
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
| | - Ola F. Wendt
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
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6
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Bailey WD, Phearman AS, Luconi L, Rossin A, Yakhvarov DG, D'Accolti L, Flowers SE, Kaminsky W, Kemp RA, Giambastiani G, Goldberg KI. Hydrogenolysis of Dinuclear PCN R Ligated Pd II μ-Hydroxides and Their Mononuclear Pd II Hydroxide Analogues. Chemistry 2019; 25:9920-9929. [PMID: 31090244 DOI: 10.1002/chem.201900507] [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: 02/01/2019] [Revised: 05/05/2019] [Indexed: 11/11/2022]
Abstract
The hydrogenolysis of mono- and dinuclear PdII hydroxides was investigated both experimentally and computationally. It was found that the dinuclear μ-hydroxide complexes {[(PCNR )Pd]2 (μ-OH)}(OTf) (PCNH =1-[3-[(di-tert-butylphosphino)methyl]phenyl]-1H-pyrazole; PCNMe =1-[3-[(di-tert-butylphosphino)methyl]phenyl]-5-methyl-1H-pyrazole) react with H2 to form the analogous dinuclear hydride species {[(PCNR )Pd]2 (μ-H)}(OTf). The dinuclear μ-hydride complexes were fully characterized, and are rare examples of structurally characterized unsupported singly bridged μ-H PdII dimers. The {[(PCNMe )Pd]2 (μ-OH)}(OTf) hydrogenolysis mechanism was investigated through experiments and computations. The hydrogenolysis of the mononuclear complex (PCNH )Pd-OH resulted in a mixed ligand dinuclear species [(PCNH )Pd](μ-H)[(PCC)Pd] (PCC=a dianionic version of PCNH bound through phosphorus P, aryl C, and pyrazole C atoms) generated from initial ligand "rollover" C-H activation. Further exposure to H2 yields the bisphosphine Pd0 complex Pd[(H)PCNH ]2 . When the ligand was protected at the pyrazole 5-position in the (PCNMe )Pd-OH complex, no hydride formed under the same conditions; the reaction proceeded directly to the bisphosphine Pd0 complex Pd[(H)PCNMe ]2 . Reaction mechanisms for the hydrogenolysis of the monomeric and dimeric hydroxides are proposed.
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Affiliation(s)
- Wilson D Bailey
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington, 98195-1700, USA
| | - Alexander S Phearman
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Lapo Luconi
- Institute of Chemistry of Organometallic Compounds, ICCOM-CNR and Consorzio INSTM, Via Madonna del Piano, 10-50019 Sesto Fiorentino, Florence, Italy
| | - Andrea Rossin
- Institute of Chemistry of Organometallic Compounds, ICCOM-CNR and Consorzio INSTM, Via Madonna del Piano, 10-50019 Sesto Fiorentino, Florence, Italy
| | - Dmitry G Yakhvarov
- Kazan Federal University, 420008, Kazan, Russian Federation.,Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 420008, Kazan, Russian Federation
| | - Lucia D'Accolti
- Università di Bari "A. Moro", Via Orabona 4, 70126, Bari, Italy
| | - Sarah E Flowers
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington, 98195-1700, USA
| | - Werner Kaminsky
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington, 98195-1700, USA
| | - Richard A Kemp
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico, 87131, USA.,Advanced Materials Laboratory, Sandia National Laboratories, Albuquerque, New Mexico, 87106, USA
| | - Giuliano Giambastiani
- Institute of Chemistry of Organometallic Compounds, ICCOM-CNR and Consorzio INSTM, Via Madonna del Piano, 10-50019 Sesto Fiorentino, Florence, Italy.,Kazan Federal University, 420008, Kazan, Russian Federation.,Institute of Chemistry and Processes for Energy, Environment and Health (ICPEES), UMR 7515 CNRS-University of Strasbourg (UdS), 25, rue Becquerel, 67087, Strasbourg Cedex 02, France
| | - Karen I Goldberg
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington, 98195-1700, USA.,Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
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7
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Koizumi H, Chiba H, Sugihara A, Iwamura M, Nozaki K, Ishitani O. CO 2 capture by Mn(i) and Re(i) complexes with a deprotonated triethanolamine ligand. Chem Sci 2019; 10:3080-3088. [PMID: 30996890 PMCID: PMC6429607 DOI: 10.1039/c8sc04389b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/16/2019] [Indexed: 11/21/2022] Open
Abstract
CO2 capture at low concentration by catalysts is potentially useful for developing photocatalytic and electrocatalytic CO2 reduction systems. We investigated the CO2-capturing abilities of two complexes, fac-Mn(X2bpy)(CO)3(OCH2CH2NR2) and fac-Re(X2bpy)(CO)3(OCH2CH2NR2) (X2bpy = 4,4'-X2-2,2-bipyridine and R = -CH2CH2OH), which work as efficient catalysts for CO2 reduction. Both complexes could efficiently capture CO2 even from Ar gas containing only low concentration of CO2 such as 1% to be converted into fac-M(X2bpy)(CO)3(OC(O)OCH2CH2NR2) (M = Mn and Re). These CO2-capturing reactions proceeded reversibly and their equilibrium constants were >1000. The substituents of X2bpy strongly affected the CO2-capturing abilities of both Mn and Re complexes. The density functional theory (DFT) calculation could be used to estimate the CO2-capturing abilities of the metal complexes in the presence of triethanolamine.
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Affiliation(s)
- Hiroki Koizumi
- Department of Chemistry , School of Science , Tokyo Institute of Technology , 2-12-1, NE-1 O-okayama, Meguro-ku , Tokyo 152-8550 , Japan .
| | - Hiroyuki Chiba
- Department of Chemistry , School of Science , Tokyo Institute of Technology , 2-12-1, NE-1 O-okayama, Meguro-ku , Tokyo 152-8550 , Japan .
| | - Ayumi Sugihara
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Munetaka Iwamura
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Koichi Nozaki
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Osamu Ishitani
- Department of Chemistry , School of Science , Tokyo Institute of Technology , 2-12-1, NE-1 O-okayama, Meguro-ku , Tokyo 152-8550 , Japan .
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8
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Synthesis and characterisation of POCsp3OP supported Ni(II) hydroxo, hydroxycarbonyl and carbonate complexes. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.09.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Hazari N, Heimann JE. Carbon Dioxide Insertion into Group 9 and 10 Metal–Element σ Bonds. Inorg Chem 2017; 56:13655-13678. [DOI: 10.1021/acs.inorgchem.7b02315] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nilay Hazari
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Jessica E. Heimann
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
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10
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Liu S, Tan JM, Gulec A, Crosby LA, Drake TL, Schweitzer NM, Delferro M, Marks LD, Marks TJ, Stair PC. Stabilizing Single-Atom and Small-Domain Platinum via Combining Organometallic Chemisorption and Atomic Layer Deposition. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00869] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shengsi Liu
- Department
of Chemistry and the Center for Catalysis and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - J. Miles Tan
- Department
of Chemistry and the Center for Catalysis and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ahmet Gulec
- Department
of Materials Science and Engineering and the Center for Catalysis
and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Lawrence A. Crosby
- Department
of Materials Science and Engineering and the Center for Catalysis
and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Tasha L. Drake
- Department
of Chemistry and the Center for Catalysis and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Neil M. Schweitzer
- Department
of Chemical and Biological Engineering and the Center for Catalysis
and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Massimiliano Delferro
- Department
of Chemistry and the Center for Catalysis and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Laurence D. Marks
- Department
of Materials Science and Engineering and the Center for Catalysis
and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Tobin J. Marks
- Department
of Chemistry and the Center for Catalysis and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Peter C. Stair
- Department
of Chemistry and the Center for Catalysis and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
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11
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Shih WC, Ozerov OV. One-Pot Synthesis of 1,3-Bis(phosphinomethyl)arene PCP/PNP Pincer Ligands and Their Nickel Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00671] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei-Chun Shih
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
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12
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Arikawa Y, Nakamura T, Ogushi S, Eguchi K, Umakoshi K. Fixation of atmospheric carbon dioxide by ruthenium complexes bearing an NHC-based pincer ligand: formation of a methylcarbonato complex and its methylation. Dalton Trans 2015; 44:5303-5. [PMID: 25711491 DOI: 10.1039/c5dt00476d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A methylcarbonato ruthenium complex was prepared by capture of CO2 from air using the (CNC)(bpy)Ru scaffold. The methylcarbonato complex was relatively inert to decarboxylation. Treatments with methylating reagents released dimethylcarbonate.
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Affiliation(s)
- Yasuhiro Arikawa
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan.
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13
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Kim YE, Oh S, Kim S, Kim O, Kim J, Han SW, Lee Y. Phosphinite-Ni(0) mediated formation of a phosphide-Ni(II)-OCOOMe species via uncommon metal-ligand cooperation. J Am Chem Soc 2015; 137:4280-3. [PMID: 25798737 DOI: 10.1021/ja513112r] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Reversible transformations are observed between a phosphide-nickel(II) alkoxide and a phosphinite-nickel(0) species via a P-O bond formation coupled with a 2-e(-) redox change at the nickel center. In the forward reaction, the nickel(0) dinitrogen species (PP(OMe)P)Ni(N2) (2) and {(PP(OMe)P)Ni}2(μ-N2) (3) were formed from the reaction of (PPP)NiCl (1) with a methoxy anion. In the backward reaction, a (PPP)Ni(II) moiety was regenerated from the CO2 reaction of 3 with the concomitant formation of a methyl carbonate ligand in (PPP)Ni(OCOOMe) (7). Thus, unanticipated metal-ligand cooperation involving a phosphide based ligand is reported.
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Affiliation(s)
- Yeong-Eun Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Seohee Oh
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Seji Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Onnuri Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Jin Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Sang Woo Han
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Yunho Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
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14
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Brink A, Truedsson I, Fleckhaus A, Johnson MT, Norrby PO, Roodt A, Wendt OF. Fast and reversible insertion of carbon dioxide into zirconocene-alkoxide bonds. A mechanistic study. Dalton Trans 2014; 43:8894-8. [PMID: 24796283 DOI: 10.1039/c3dt53566e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In two consecutive equilibria the compound (Cp*)2Zr(OMe)2 undergoes insertion of CO2 to form the mono- and bis-hemicarbonates. Both equilibria are exothermic but entropically disfavoured. Magnetisation transfer experiments gave kinetic data for the first equilibrium showing that the rate of insertion is overall second order with a rate constant of 3.20 ± 0.12 M(-1) s(-1), which is substantially higher than those reported for other early transition metal alkoxides, which are currently the best homogeneous catalysts for dimethyl carbonate formation from methanol and CO2. Activation parameters for the insertion reaction point to a highly ordered transition state and we interpret that as there being a substantial interaction between the CO2 and the metal during the C-O bond formation. This is supported by DFT calculations showing the lateral attack by CO2 to have the lowest energy transition state.
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Affiliation(s)
- Alice Brink
- Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa
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15
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Anderson BG, Spencer JL. The Coordination Chemistry of Pentafluorophenylphosphino Pincer Ligands to Platinum and Palladium. Chemistry 2014; 20:6421-32. [DOI: 10.1002/chem.201304398] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Revised: 03/04/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Bradley G. Anderson
- School of Chemical and Physical Science, Victoria University of Wellington, Wellington (New Zealand)
| | - John L. Spencer
- School of Chemical and Physical Science, Victoria University of Wellington, Wellington (New Zealand)
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16
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Hasanayn F, Baroudi A, Bengali AA, Goldman AS. Hydrogenation of Dimethyl Carbonate to Methanol by trans-[Ru(H)2(PNN)(CO)] Catalysts: DFT Evidence for Ion-Pair-Mediated Metathesis Paths for C–OMe Bond Cleavage. Organometallics 2013. [DOI: 10.1021/om4005127] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Faraj Hasanayn
- Department of Chemistry, The American University of Beirut, Beirut, Lebanon
| | - Abdulkader Baroudi
- Department of Chemistry, The American University of Beirut, Beirut, Lebanon
| | | | - Alan S. Goldman
- Department of Chemistry
and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
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17
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Martínez-Prieto LM, Real C, Ávila E, Álvarez E, Palma P, Cámpora J. Reversible Reactions of Ni and Pd Hydroxo Pincer Complexes [(iPrPCP)M-OH] with CO2: Solid-State Study of the Decarboxylation of the Monomeric Bicarbonate Complexes [(iPrPCP)M-OCOOH] (M = Ni, Pd). Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300995] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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