51
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Yang T, Andrada DM, Frenking G. Dative versus electron-sharing bonding in N-oxides and phosphane oxides R3EO and relative energies of the R2EOR isomers (E = N, P; R = H, F, Cl, Me, Ph). A theoretical study. Phys Chem Chem Phys 2018; 20:11856-11866. [DOI: 10.1039/c8cp00951a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Quantum chemical calculations using ab initio methods at the CCSD(T)/def2-TZVPP level and density functional theory using BP86 and M06-2X functionals in conjunction with def2-TZVPP basis sets have been carried out on the title molecules.
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Affiliation(s)
- Tao Yang
- Fachbereich Chemie
- Philipps-Universität Marburg
- Marburg 35032
- Germany
| | - Diego M. Andrada
- Fachbereich Chemie
- Philipps-Universität Marburg
- Marburg 35032
- Germany
| | - Gernot Frenking
- Fachbereich Chemie
- Philipps-Universität Marburg
- Marburg 35032
- Germany
- Institute of Advanced Synthesis
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52
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Synthesis, Structure, and Reactivity of Carbodiphosphoranes, Carbodicarbenes, and Related Species. STRUCTURE AND BONDING 2017. [DOI: 10.1007/430_2017_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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53
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54
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Barry BM, Soper RG, Hurmalainen J, Mansikkamäki A, Robertson KN, McClennan WL, Veinot AJ, Roemmele TL, Werner‐Zwanziger U, Boeré RT, Tuononen HM, Clyburne JAC, Masuda JD. Mono‐ and Bis(imidazolidinium ethynyl) Cations and Reduction of the Latter To Give an Extended Bis‐1,4‐([3]Cumulene)‐p‐carboquinoid System. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Brian M. Barry
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
- Department of ChemistryUniversity of Wisconsin-Platteville Platteville WI 5 3818-3099 USA
| | - R. Graeme Soper
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Juha Hurmalainen
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | - Akseli Mansikkamäki
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | | | - William L. McClennan
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Alex J. Veinot
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Tracey L. Roemmele
- Department of Chemistry and BiochemistryUniversity of Lethbridge Lethbridge Alberta T1K 3M4 Canada
| | | | - René T. Boeré
- Department of Chemistry and BiochemistryUniversity of Lethbridge Lethbridge Alberta T1K 3M4 Canada
| | - Heikki M. Tuononen
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | - Jason A. C. Clyburne
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Jason D. Masuda
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
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55
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Gruber M, Bauer W, Maid H, Schöll K, Tykwinski RR. Synthetic and NMR studies on hexaphenylcarbodiphosphorane (Ph3P C PPh3). Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.04.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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56
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Liberman-Martin AL, Grubbs RH. Ruthenium Olefin Metathesis Catalysts Featuring a Labile Carbodicarbene Ligand. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00615] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Allegra L. Liberman-Martin
- Arnold and Mabel Beckman
Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125, United States
| | - Robert H. Grubbs
- Arnold and Mabel Beckman
Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125, United States
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57
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Chen WC, Shih WC, Jurca T, Zhao L, Andrada DM, Peng CJ, Chang CC, Liu SK, Wang YP, Wen YS, Yap GPA, Hsu CP, Frenking G, Ong TG. Carbodicarbenes: Unexpected π-Accepting Ability during Reactivity with Small Molecules. J Am Chem Soc 2017; 139:12830-12836. [DOI: 10.1021/jacs.7b08031] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wen-Ching Chen
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
| | - Wei-Chih Shih
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
| | - Titel Jurca
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Lili Zhao
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Diego M. Andrada
- Fachbereich
Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35043 Marburg, Germany
| | - Chun-Jung Peng
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
| | - Chun-Chi Chang
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
| | - Shu-kai Liu
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
| | - Yi-Ping Wang
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
| | - Yuh-Sheng Wen
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
| | - Glenn P. A. Yap
- Department
of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Chao-Ping Hsu
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
| | - Gernot Frenking
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
- Fachbereich
Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35043 Marburg, Germany
| | - Tiow-Gan Ong
- Institute
of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan, R.O.C
- Department
of Applied Chemistry, National Chiao Tung University, No. 1001,
Ta Hsueh Road, Hsinchu 300, Taiwan, R.O.C
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58
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Scharf LT, Gessner VH. Metalated Ylides: A New Class of Strong Donor Ligands with Unique Electronic Properties. Inorg Chem 2017; 56:8599-8607. [PMID: 28240888 PMCID: PMC5549244 DOI: 10.1021/acs.inorgchem.7b00099] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Indexed: 11/29/2022]
Abstract
The development and design of new ligand systems with special donor properties has been essential for crucial advances made in main-group-element and transition-metal chemistry over the years. This Forum Article focuses on metalated ylides as novel ligand systems. These anionic congeners of bisylides possess likewise two lone pairs of electrons at the central carbon atom and can thus function as X,L-type ligands with strong donor abilities. This article highlights recent efforts in the isolation and application of metalated ylides with a focus on work from this laboratory. We summarize structural and electronic properties and their use in organic synthesis as well as main-group-element and transition-metal chemistry.
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Affiliation(s)
- Lennart T. Scharf
- Chair of Inorganic Chemistry II, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Viktoria H. Gessner
- Chair of Inorganic Chemistry II, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
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59
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Petz W, Andrada DM, Hermann M, Frenking G, Neumüller B. A C2Fragment as Four-Electron σ Donor. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700204] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wolfgang Petz
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35032 Marburg Germany
| | - Diego M. Andrada
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35032 Marburg Germany
| | - Markus Hermann
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35032 Marburg Germany
| | - Gernot Frenking
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35032 Marburg Germany
- Donostia International Physics Center (DIPC); P. K. 1072 20080 Donostia Euskadi Spain
| | - Bernhard Neumüller
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35032 Marburg Germany
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60
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61
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Morosaki T, Iijima R, Suzuki T, Wang WW, Nagase S, Fujii T. Synthesis, Electronic Structure, and Reactivities of Two-Sulfur-Stabilized Carbones Exhibiting Four-Electron Donor Ability. Chemistry 2017; 23:8694-8702. [PMID: 28337803 DOI: 10.1002/chem.201700863] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Indexed: 01/06/2023]
Abstract
Bis(sulfane)carbon(0) (BSC; Ph2 S→C←SPh2 (1)) is successfully synthesized by deprotonation of the corresponding protonated salt 1⋅HTfO. The diprotonated salt 1⋅(HTfO)2 as the starting material can be also easily accessed by the deimination of iminosulfane(sulfane)carbon(0) (iSSC)⋅HBF4 . Density functional theory calculations revealed the peculiar electronic structure of 1, which has two lone pairs of electrons at the central carbon atom. The largest proton affinities (PA(1): 297.5 kcal mol-1 ; PA(2): 183.7 kcal mol-1 ) and the highest energy levels of the HOMOs (HOMO: -4.89 eV; HOMO-1: -5.02 eV) for 1 among the two-sulfur-stabilized carbones clearly indicate the strong donor ability of carbon center stabilized by two SII ligands. The donating ability of these lone pairs of electrons is demonstrated by the C-diaurated and C-proton-aurated complexes, which provide the first experimental evidence for two-sulfurstabilized carbones behaving as four-electron donors. Furthermore, the syntheses and application of AgI carbone complexes as carbone transfer agents are also reported.
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Affiliation(s)
- Tomohito Morosaki
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Ryo Iijima
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Tsubasa Suzuki
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Wei-Wei Wang
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Takayoshi Fujii
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
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62
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Scharf LT, Andrada DM, Frenking G, Gessner VH. The Bonding Situation in Metalated Ylides. Chemistry 2017; 23:4422-4434. [PMID: 28121371 PMCID: PMC5396261 DOI: 10.1002/chem.201605997] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Indexed: 11/07/2022]
Abstract
Quantum chemical calculations have been carried out to study the electronic structure of metalated ylides particularly in comparison to their neutral analogues, the bisylides. A series of compounds of the general composition Ph3 P-C-L with L being either a neutral or an anionic ligand were analyzed and the impact of the nature of the substituent L and the total charge on the electronics and bonding situation was studied. The charge at the carbon atom as well as the dissociation energies, bond lengths, and Wiberg bond indices strongly depend on the nature of L. Here, not only the charge of the ligand but also the position of the charge within the ligand backbone plays an important role. Independent of the substitution pattern, the NBO analysis reveals the preference of unsymmetrical bonding situations (P=C-L or P-C=L) for almost all compounds. However, Lewis structures with two lone-pair orbitals at the central carbon atom are equally valid for the description of the bonding situation. This is confirmed by the pronounced lone-pair character of the frontier orbitals. Energy decomposition analysis mostly reveals the preference of several bonding situations, mostly with dative and ylidic electron-sharing bonds (e.g., P→C- -L). In general, the anionic systems show a higher preference of the ylidic bonding situations compared to the neutral analogues. However, in most of the cases different resonance structures have to be considered for the description of the "real" bonding situation.
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Affiliation(s)
- Lennart T. Scharf
- Lehrstuhl für Anorganische Chemie IIRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Diego M. Andrada
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse35032MarburgGermany
| | - Gernot Frenking
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse35032MarburgGermany
| | - Viktoria H. Gessner
- Lehrstuhl für Anorganische Chemie IIRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
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63
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Hermann M, Frenking G. Carbones as Ligands in Novel Main-Group Compounds E[C(NHC) 2 ] 2 (E=Be, B + , C 2+ , N 3+ , Mg, Al + , Si 2+ , P 3+ ): A Theoretical Study. Chemistry 2017; 23:3347-3356. [PMID: 28004870 DOI: 10.1002/chem.201604801] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/21/2016] [Indexed: 11/10/2022]
Abstract
Quantum chemical calculations of the main-group compounds E[C(NHCMe )2 ]2 (E=Be, B+ , C2+ , N3+ , Mg, Al+ , Si2+ , P3+ ) have been carried out using density functional theory at the BP86/def2-TZVPP and BP86-D3(BJ)/def2-TZVPP levels of theory. The geometry optimization at BP86/def2-TZVPP gives equilibrium structures with two-coordinated species E and bending angles C-E-C between 152.5° (E=Be) and 110.5° (E=Al). Inclusion of dispersion forces at BP86-D3(BJ)/def2-TZVPP yields a three-coordinated beryllium compound Be[C(NHCMe )2 ]2 as the only energy minimum form. Three-coordinated isomers are found besides the two-coordinated energy minima for the boron and carbon cations B[C(NHCMe )2 ]2+ and C[C(NHCMe )2 ]22+ . The three-coordinated form of the boron compound is energetically lower lying than the two-coordinated form, while the opposite trend is calculated for the carbon species. The theoretically predicted bond dissociation energies suggest that all compounds are viable species for experimental studies. The X-ray structure of the benzoannelated homologue of P[C(NHCMe )2 ]23+ that was recently reported by Dordevic et al. agrees quite well with the calculated geometry of the molecule. A detailed bonding analysis using charge and energy decomposition methods shows that the two-coordinated neutral compounds Be[C(NHCMe )2 ]2 and Mg[C(NHCMe )2 ]2 possess strongly positively charged atoms Be and Mg. The carbodicarbene groups C(NHCMe )2 serve as acceptor ligands in the compounds and may be sketched with dative bonds (NHCMe )2 C←E→C(NHCMe )2 (E=Be, Mg). Dative bonds in which the carbones C(NHCMe )2 are donor ligands are suggested for the cations (NHCMe )2 C→E←C(NHCMe )2 (E=B+ , Al+ ). The dications and trications possess electron-sharing bonds in which the bonding situation is best described with the formula [(NHCMe )2 C]+ -E-[C(NHCMe )2 ]+ (E=C, Si, N+ , P+ ).
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Affiliation(s)
- Markus Hermann
- Fachbereich Chemie der, Philipps-Universität, Hans-Meerwein-Strasse 4, 35032, Marburg, Germany
| | - Gernot Frenking
- Fachbereich Chemie der, Philipps-Universität, Hans-Meerwein-Strasse 4, 35032, Marburg, Germany.,Donostia International Physics Center (DIPC), P.K. 1072, 20080, Donostia, Euskadi, Spain
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64
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Georgiou DC, Zhao L, Wilson DJD, Frenking G, Dutton JL. NHC-Stabilised Acetylene-How Far Can the Analogy Be Pushed? Chemistry 2017; 23:2926-2934. [PMID: 27935139 DOI: 10.1002/chem.201605495] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Indexed: 12/18/2022]
Abstract
Experimental studies suggest that the compound (NHCbz )2 C2 H2 can be considered as a complex of a distorted acetylene fragment which is stabilised by benzoannelated N-heterocyclic carbene ligands (NHCbz )→(C2 H2 )←(NHCbz ). A quantum chemical analysis of the electronic structures shows that the description with dative bonds is more favourable than with electron-sharing double bonds (NHCbz )=(C2 H2 )=(NHCbz ).
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Affiliation(s)
- Dayne C Georgiou
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Lili Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China.,Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032, Marburg, Germany
| | - David J D Wilson
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Gernot Frenking
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China.,Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032, Marburg, Germany.,Donostia International Physics Center (DIPC), P.K. 1072, 20080, Donostia, Spain
| | - Jason L Dutton
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
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65
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Morosaki T, Fujii T. Recent Advances in Heteroatom-Stabilized Carbones and Their Metal Complexes. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2017. [DOI: 10.1016/bs.adomc.2017.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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66
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Chen Q, Liu X, Guo F, Chen Z. An unexpected rearrangement of pyrazolium halides based on N–N bond cleavage: synthesis of 1,2-dihydropyrimidines. Chem Commun (Camb) 2017; 53:6792-6795. [DOI: 10.1039/c7cc02525d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unexpected rearrangement of pyrazolium halides was observed, presenting an efficient approach for the synthesis of 1,2-dihydroquinazolines under mild conditions.
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Affiliation(s)
- Qian Chen
- State Key Laboratory of Urban Water Resource and Environment
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
| | - Xiaoshuang Liu
- State Key Laboratory of Urban Water Resource and Environment
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
| | - Fang Guo
- State Key Laboratory of Urban Water Resource and Environment
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
| | - Zhonglin Chen
- School of Municipal Environmental Engineering
- Harbin Institute of Technology
- Harbin
- China
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67
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Tripathi M, Regnier V, Lincheneau C, Martin D. Investigation of the full reversal of selectivity in the reaction of aniline with 1,3-dichloro-1,3-bis(dimethylamino)vinamidinium salts. NEW J CHEM 2017. [DOI: 10.1039/c7nj03442c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Changing the timing of the addition of triethylamine switches this reaction towards the formation of either a quinoline or a malonamidine.
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Affiliation(s)
- Monika Tripathi
- Université Grenoble-Alpes, CNRS, DCM (UMR 5250), CS 40700
- 38058 Grenoble Cedex 9
- France
| | - Vianney Regnier
- Université Grenoble-Alpes, CNRS, DCM (UMR 5250), CS 40700
- 38058 Grenoble Cedex 9
- France
| | - Christophe Lincheneau
- Université Grenoble-Alpes, CNRS, DCM (UMR 5250), CS 40700
- 38058 Grenoble Cedex 9
- France
| | - David Martin
- Université Grenoble-Alpes, CNRS, DCM (UMR 5250), CS 40700
- 38058 Grenoble Cedex 9
- France
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68
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Andrada DM, Holzmann N, Frenking G. Bonding analysis of ylidone complexes EL2 (E = C–Pb) with phosphine and carbene ligands L. CAN J CHEM 2016. [DOI: 10.1139/cjc-2016-0263] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Quantum chemical calculations using DFT and ab initio methods have been carried out of the compounds EL2 with atoms E = C–Pb and the ligands L = PPh3, N-heterocyclic carbene (NHC), bicyclic NHC, and cyclic alkyl-amino carbene (cAAC). The equilibrium structures are reported and the bonding situation was analyzed with a variety of charge- and energy decomposition methods. Some of the molecules are experimentally known, but most molecules have not yet been prepared. The bonding analysis suggests that all but one molecule should be considered as ylidones that possess dative bonds L→E←L. The sole exception is C(cAAC)2, which has a linear structure and classical double bonds (cAAC)=C=(cAAC). The ylidones EL2 have two lone-pair orbitals at atom E with σ and π symmetry. The π lone pair is somewhat delocalized due to L←E→L π-backdonation. The contribution of L←E→L π-backdonation relative to L→E←L σ-donation increases for the heavier elements. The compounds have rather large first and second proton affinities, which is a characteristic feature of ylidones. They are thus double Lewis bases that could be utilized in chemical reactions.
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Affiliation(s)
- Diego M. Andrada
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany
| | - Nicole Holzmann
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany
| | - Gernot Frenking
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany
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69
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Pranckevicius C, Iovan DA, Stephan DW. Three and four coordinate Fe carbodiphosphorane complexes. Dalton Trans 2016; 45:16820-16825. [PMID: 27711768 DOI: 10.1039/c6dt03453e] [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
Carbodiphosphoranes (CDPs) are a family of divalent carbon ligands that are known for their exceptional electron donor properties. Herein, the preparation and reactivity of a family of three and four co-ordinate Fe carbodiphosphorane complexes is described. Hexaphenylcarbodiphosphorane (HCDP) [1] is shown to react with FeCl2(PPh3)2 to form the three coordinate adduct Fe(HCDP)Cl2 [2], which is equilibrium with its four coordinate dimer. Reaction of [2] with two equivalents of benzyl Grignard yields the corresponding dialkyl complex (HCDP)FeBn2 [3]. Combination of [2] with LiHMDS results in salt metathesis and the formation of the monosilylated derivative Fe(HCDP)Cl(N(SiMe3)2) [4]. Subsequent anion exchange leads to the three coordinate Fe(HCDP)(OTf)(N(SiMe3)2) [5] which was characterized crystallographically and in solution.
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Affiliation(s)
- Conor Pranckevicius
- Department of Chemistry, University of Toronto, 80 St George St., Toronto, ON, Canada M5S3H6.
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70
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Kosnik SC, Macdonald CLB. A zwitterionic triphosphenium compound as a tunable multifunctional donor. Dalton Trans 2016; 45:6251-8. [PMID: 26647121 DOI: 10.1039/c5dt03915k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The preparation of a novel triphosphenium zwitterion featuring di-, tri-, and tetra-coordinate phosphorus centres derived from a 1,2,4-tris-(diphenylphoshinyl)cyclopentadienyl framework is described. The reactivity of this potentially multidentate donor with protons, elemental sulfur and gold(i) chloride is examined, and the preferential reactivity of the pendant phosphine group over the P(i) centre is rationalized on the basis of density functional theory investigations.
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Affiliation(s)
- Stephanie C Kosnik
- Department of Chemistry and Biochemistry, Windsor, Ontario, Canada N9B 3P4.
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71
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Pranckevicius C, Liu LL, Bertrand G, Stephan DW. Synthesis of a Carbodicyclopropenylidene: A Carbodicarbene based Solely on Carbon. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600765] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Liu Leo Liu
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0343 USA
| | - Guy Bertrand
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0343 USA
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72
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Pranckevicius C, Liu LL, Bertrand G, Stephan DW. Synthesis of a Carbodicyclopropenylidene: A Carbodicarbene based Solely on Carbon. Angew Chem Int Ed Engl 2016; 55:5536-40. [PMID: 27028936 DOI: 10.1002/anie.201600765] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Indexed: 11/11/2022]
Abstract
The first carbodicarbene stabilized by flanking cyclopropenylidenes is reported. Tetraphenylcarbodicyclopropenylidene (2) is accessed by deprotonation of the corresponding triafulvene cyclopropenium salt, and has been spectroscopically characterized in [D8 ]THF solution at -60 °C. Main-group and transition-metal complexes of 2 have been accessed, and have revealed the high sigma donating ability, and exclusive η(1) binding of this neutral all carbon ligand. Variable temperature NMR spectroscopy studies reveal varying degrees of free rotation in the flanking cyclopropenylidene groups of 2 in its coordination compounds.
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Affiliation(s)
- Conor Pranckevicius
- Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada
| | - Liu Leo Liu
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, 92093-0343, USA
| | - Guy Bertrand
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, 92093-0343, USA
| | - Douglas W Stephan
- Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada.
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73
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Lepetit C, Maraval V, Canac Y, Chauvin R. On the nature of the dative bond: Coordination to metals and beyond. The carbon case. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.07.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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74
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Nguyen TAN, Huynh TPL, Le TH, Pham VT, Dang TH. A Comparison of Donor-acceptor Interactions in Borane Complexes of Divalent Tetrylenes(II) and Divalent Tetrylones(0) using Energy Decomposition Analysis Method with Natural Orbital for Chemical Valence Theory. SMART SCIENCE 2016. [DOI: 10.1080/23080477.2016.1168634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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75
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76
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Frenking G, Hermann M, Andrada DM, Holzmann N. Donor–acceptor bonding in novel low-coordinated compounds of boron and group-14 atoms C–Sn. Chem Soc Rev 2016; 45:1129-44. [DOI: 10.1039/c5cs00815h] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Donor–acceptor complexes of one, two or three atoms E = B, Si–Sn which are stabilized by σ-donor ligands L are discussed.
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Affiliation(s)
- Gernot Frenking
- Fachbereich Chemie
- Philipps-Universität Marburg
- Hans-Meerwein-Strasse
- D-35032 Marburg
- Germany
| | - Markus Hermann
- Fachbereich Chemie
- Philipps-Universität Marburg
- Hans-Meerwein-Strasse
- D-35032 Marburg
- Germany
| | - Diego M. Andrada
- Fachbereich Chemie
- Philipps-Universität Marburg
- Hans-Meerwein-Strasse
- D-35032 Marburg
- Germany
| | - Nicole Holzmann
- Fachbereich Chemie
- Philipps-Universität Marburg
- Hans-Meerwein-Strasse
- D-35032 Marburg
- Germany
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77
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Đorđević N, Ganguly R, Petković M, Vidović D. Bis(carbodicarbene)phosphenium trication: the case against hypervalency. Chem Commun (Camb) 2016; 52:9789-92. [DOI: 10.1039/c6cc04161b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A phosphenium trication is stabilized by two carbone ligands. According to theoretical investigations the title compound contains polarized P–C bonds.
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Affiliation(s)
- Nemanja Đorđević
- SPMS-Department of Chemisquery try and Biological Chemistry
- Nanyang Technological University
- Singapore
| | - Rakesh Ganguly
- SPMS-Department of Chemisquery try and Biological Chemistry
- Nanyang Technological University
- Singapore
| | - Milena Petković
- Faculty of Physical Chemistry
- University of Belgrade
- 11000 Belgrade
- Republic of Serbia
| | - Dragoslav Vidović
- SPMS-Department of Chemisquery try and Biological Chemistry
- Nanyang Technological University
- Singapore
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78
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Bharatam PV, Arfeen M, Patel N, Jain P, Bhatia S, Chakraborti AK, Khullar S, Gupta V, Mandal SK. Design, Synthesis, and Structural Analysis of Divalent N(I) Compounds and Identification of a New Electron-Donating Ligand. Chemistry 2015; 22:1088-96. [PMID: 26615987 DOI: 10.1002/chem.201503618] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Indexed: 11/09/2022]
Abstract
The dative-bond representation (L→E) in compounds with main group elements (E) has triggered extensive debate in the recent past. The scope and limits of this nonclassical coordination bond warrant comprehensive exploration. Particularly compounds with (L→N←L')(+) arrangement are of special interest because of their therapeutic importance. This work reports the design and synthesis of novel chemical species with the general structural formula (L→N←L')(+) carrying the unusual ligand cyclohexa-2,5-diene-4-(diaminomethynyl)-1-ylidene. Four species belonging to the (L→N←L')(+) class carrying this unconventional ligand were synthesized. Quantum chemical and X-ray diffraction analyses showed that the electronic and geometric parameters are consistent with those of already reported divalent N(I) compounds. The molecular orbital analysis, geometric parameters, and spectral data clearly support the L→N and N←L' interactions in these species. The newly identified ligand has the properties of a reactive carbene and high nucleophilicity.
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Affiliation(s)
- Prasad V Bharatam
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -, 160 062, Punjab, India.
| | - Minhajul Arfeen
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -, 160 062, Punjab, India
| | - Neha Patel
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -, 160 062, Punjab, India
| | - Priyanka Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -, 160 062, Punjab, India
| | - Sonam Bhatia
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -, 160 062, Punjab, India
| | - Asit K Chakraborti
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -, 160 062, Punjab, India.
| | - Sadhika Khullar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Sector 81, S.A.S. Nagar -, 140 308, Punjab, India
| | - Vijay Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Sector 81, S.A.S. Nagar -, 140 308, Punjab, India
| | - Sanjay K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Sector 81, S.A.S. Nagar -, 140 308, Punjab, India.
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79
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Crocker RD, Nguyen TV. The Resurgence of the Highly Ylidic N-Heterocyclic Olefins as a New Class of Organocatalysts. Chemistry 2015; 22:2208-13. [DOI: 10.1002/chem.201503575] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Reece D. Crocker
- School of Chemistry; University of New South Wales; Sydney NSW 2052 Australia
| | - Thanh V. Nguyen
- School of Chemistry; University of New South Wales; Sydney NSW 2052 Australia
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80
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Chen WC, Shen JS, Jurca T, Peng CJ, Lin YH, Wang YP, Shih WC, Yap GPA, Ong TG. Expanding the Ligand Framework Diversity of Carbodicarbenes and Direct Detection of Boron Activation in the Methylation of Amines with CO2. Angew Chem Int Ed Engl 2015; 54:15207-12. [PMID: 26489967 DOI: 10.1002/anie.201507921] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Indexed: 01/06/2023]
Abstract
A simple and convergent synthetic strategy used to increase the diversity of the carbodicarbene ligand framework through incorporation of unsymmetrical pendant groups is reported. Structural analysis and spectroscopic studies of ligands and their Rh complexes are reported. Reactivity studies reveal carbodicarbenes as competent organocatalysts for amine methylation using CO2 as a synthon. A unique BH-activated boron-carbodicarbene complex was isolated as a reaction intermediate, providing mechanistic insight into the CO2 functionalization process.
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Affiliation(s)
- Wen-Ching Chen
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan (Republic of China)
| | - Jiun-Shian Shen
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan (Republic of China)
| | - Titel Jurca
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS (UK)
| | - Chun-Jung Peng
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan (Republic of China)
| | - Yen-Hsu Lin
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan (Republic of China)
| | - Yi-Ping Wang
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan (Republic of China)
| | - Wei-Chih Shih
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan (Republic of China)
| | - Glenn P A Yap
- Department of Chemistry and Biochemistry, University of Delaware (USA)
| | - Tiow-Gan Ong
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan (Republic of China). .,Department of Applied Chemistry, National Chiao Tung University, Taiwan (Republic of China).
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81
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Chen WC, Shen JS, Jurca T, Peng CJ, Lin YH, Wang YP, Shih WC, Yap GPA, Ong TG. Expanding the Ligand Framework Diversity of Carbodicarbenes and Direct Detection of Boron Activation in the Methylation of Amines with CO2. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507921] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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82
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Morosaki T, Wang WW, Nagase S, Fujii T. Synthesis, Structure, and Reactivities of Iminosulfane- and Phosphane-Stabilized Carbones Exhibiting Four-Electron Donor Ability. Chemistry 2015; 21:15405-11. [PMID: 26471447 DOI: 10.1002/chem.201502166] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Indexed: 11/09/2022]
Abstract
Iminosulfane(phosphane)carbon(0) derivatives (iSPCs; Ar3 P→C←SPh2 (NMe); Ar=Ph (1), 4-MeOC6 H4 (2), 4-(Me2 N)C6 H4 (3)) have been successfully synthesized and the molecular structure of 3 characterized. Carbone 3 is the first thermally and hydrolytically stable carbone stabilized by phosphorus and sulfur ligands. DFT calculations reveal the electronic structures of 1-3, which have two lone pairs of electrons at the carbon center. First and second proton affinity values are theoretically calculated to be in the range of 286.8-301.1 and 189.6-208.3 kcal mol(-1) , respectively. Cyclic voltammetry measurements reveal that the HOMO energy levels follow the order of 3>2>1 and the HOMO of 3 is at a higher energy than those of bis(chalcogenane)carbon(0) (BChCs). The reactivities of these lone pairs of electrons are demonstrated by the C-diaurated and C-proton-aurated complexes. These results are the first experimental evidence of phosphorus- and sulfur-stabilized carbones behaving as four-electron donors. In addition, the reaction of hydrochloric salts of the carbones with Ag2 O gives the corresponding Ag(I) complexes. The resulting silver(I) carbone complexes can be used as carbone transfer agents. This synthetic protocol can also be used for moisture-sensitive carbone species.
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Affiliation(s)
- Tomohito Morosaki
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba 275-8575 (Japan)
| | - Wei-Wei Wang
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103 (Japan)
| | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103 (Japan)
| | - Takayoshi Fujii
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba 275-8575 (Japan).
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83
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Bis-N-heterocyclic carbene in stabilized [bis-NHC(R)→EBr2H2] (E=Si to Pb) (R=H, F, Cl, Br, CH3, CF3) complexes: A theoretical study. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.04.032] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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84
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Guha AK, Borthakur B, Phukan AK. Spectroscopic Distinction of Different Carbon Bases: An Insight from Theory. J Org Chem 2015; 80:7301-4. [DOI: 10.1021/acs.joc.5b01056] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ankur Kanti Guha
- Department of Chemistry, Cotton College State University, Guwahati, Assam 781001, India
| | - Bitupon Borthakur
- Department of Chemical Sciences, Tezpur University, Napaam, Assam 784028, India
| | - Ashwini K. Phukan
- Department of Chemical Sciences, Tezpur University, Napaam, Assam 784028, India
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85
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Petz W. Addition compounds between carbones, CL2, and main group Lewis acids: A new glance at old and new compounds. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.01.007] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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86
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Pranckevicius C, Fan L, Stephan DW. Cyclic bent allene hydrido-carbonyl complexes of ruthenium: highly active catalysts for hydrogenation of olefins. J Am Chem Soc 2015; 137:5582-9. [PMID: 25855868 DOI: 10.1021/jacs.5b02203] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new family of ruthenium complexes bearing the carbodicarbene-type ligand "cyclic bent allene" (CBA) have been synthesized from the common precursor RuHCl(CO)(PPh3)3. Complexes were evaluated for catalytic activity in the room-temperature hydrogenation of unactivated olefins and were found to be significantly more active than known ruthenium hydrido-carbonyl phosphine or NHC complexes. In particular, RuH(OSO2CF3)(CO)(SIMes)(CBA) was found to be among the most active hydrogenation catalysts, achieving comparable activity to Crabtree's catalyst in the hydrogenation of unactivated trisubstituted olefins and superior activity in the hydrogenation of styrene derivatives in side-by-side catalytic runs. RuH(OSO2CF3)(CO)(SIMes)(CBA) was also found to be highly active in olefin selective hydrogenation in the presence of a variety of unsaturated functional groups, and can achieve exceptional diastereoselectivity in functional-group-directed hydrogenations at very low catalyst loadings.
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Affiliation(s)
- Conor Pranckevicius
- Department of Chemistry, University of Toronto. Toronto, Ontario M5S 3H6, Canada
| | - Louie Fan
- Department of Chemistry, University of Toronto. Toronto, Ontario M5S 3H6, Canada
| | - Douglas W Stephan
- Department of Chemistry, University of Toronto. Toronto, Ontario M5S 3H6, Canada
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87
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Kuriakose N, Vanka K. Can substituted allenes be highly efficient leaving groups in catalytic processes? A computational investigation. J Comput Chem 2015; 36:795-804. [DOI: 10.1002/jcc.23855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 01/19/2015] [Accepted: 01/23/2015] [Indexed: 02/05/2023]
Affiliation(s)
- Nishamol Kuriakose
- Physical Chemistry Division, National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune Maharashtra 411008 India
| | - Kumar Vanka
- Physical Chemistry Division, National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune Maharashtra 411008 India
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88
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Rezabal E, Frison G. Estimating π binding energy of N-Heterocyclic carbenes: The role of polarization. J Comput Chem 2015; 36:564-72. [DOI: 10.1002/jcc.23852] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 12/19/2014] [Accepted: 01/09/2015] [Indexed: 01/12/2023]
Affiliation(s)
- Elixabete Rezabal
- Laboratoire de Chimie Moleculaire, Department of Chemistry; Ecole Polytechnique and CNRS; 91128 Palaiseau Cedex France
| | - Gilles Frison
- Laboratoire de Chimie Moleculaire, Department of Chemistry; Ecole Polytechnique and CNRS; 91128 Palaiseau Cedex France
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89
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Abstract
An overview of the synthesis, structures and reaction chemistry of coordination complexes featuring an acceptor with at least one lone pair and at least one phosphine donor is presented. One or more examples of complexes have been structurally-characterized for the majority of p-block elements but few are known for most elements. The unusual condition of a p-block element centre accommodating a lone pair of electrons and offering a low energy LUMO gives the element centre the potential to behave as both a Lewis acid and a Lewis Base. The structural diversity and reactivity of the phosphine complexes highlights new directions in main group chemistry and by comparison with transition metal coordination chemistry, the featured complexes demonstrate significant configurational and stereochemical flexibility. Ligand exchange, oxidation and reduction chemistry at the lone pair bearing acceptor centre reveals unusual reactivity and an interesting class of ligands and inorganic reagents, with new possibilities for catalysis or small molecule activation.
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Affiliation(s)
- Saurabh S Chitnis
- Department of Chemistry, University of Victoria, Victoria BC V8W 3V6, Canada.
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90
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De Proft F, Broeckaert L, Turek J, Růžička A, Willem R. Reactivity of low-oxidation state tin compounds: an overview of the benefits of combining DFT Theory and experimental NMR spectroscopy. CAN J CHEM 2014. [DOI: 10.1139/cjc-2013-0521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The reactivity and complexation properties of dicoordinated Sn(II) and Sn(0) compounds are reviewed. The (dominant) electrophilicity of the stannylenes was confirmed and quantified through density functional theory (DFT) based reactivity indices. For these compounds, combining theoretical DFT calculations and experimental nuclear magnetic resonance (NMR) spectroscopic results has evidenced their potential to undergo π-complexation from aromatic π clouds in addition to significantly stronger σ-complexation. Moreover, their potential as Lewis bases was scrutinized in their interactions and reactions with iron and tungsten carbonyl Lewis acids. Finally, a prospective comparison of the reactivity of divalent stannylenes and stannylones, with a 0 oxidation state at the Sn atom, is presented.
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Affiliation(s)
- Frank De Proft
- Department of General Chemistry (ALGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium
| | - Lies Broeckaert
- Department of General Chemistry (ALGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium
| | - Jan Turek
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic
| | - Rudolph Willem
- Department of Materials and Chemistry (MACH), Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium
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91
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Frenking G. Dative Bindungen bei Hauptgruppenelementverbindungen: ein Plädoyer für mehr Pfeile. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311022] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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92
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Frenking G. Dative bonds in main-group compounds: a case for more arrows! Angew Chem Int Ed Engl 2014; 53:6040-6. [PMID: 24849466 DOI: 10.1002/anie.201311022] [Citation(s) in RCA: 216] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Gernot Frenking
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032 Marburg (Deutschland).
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93
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Goldfogel MJ, Roberts CC, Meek SJ. Intermolecular hydroamination of 1,3-dienes catalyzed by bis(phosphine)carbodicarbene-rhodium complexes. J Am Chem Soc 2014; 136:6227-30. [PMID: 24742315 DOI: 10.1021/ja502275w] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A carbodicarbene (CDC)-based pincer ligand scaffold is reported, along with its application to site-selective Rh(I)-catalyzed intermolecular hydroamination of 1,3-dienes with aryl and alkyl amines. To the best of our knowledge, this is the first example of the use of a well-defined CDC complex as an efficient catalyst. Transformations proceed in the presence of 1.0-5.0 mol % Rh complex at 35-120 °C; allylic amines are obtained in up to 97% yield and with >98:2 site selectivity.
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Affiliation(s)
- Matthew J Goldfogel
- Department of Chemistry, The University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
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94
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Soriano E, Fernández I. Allenes and computational chemistry: from bonding situations to reaction mechanisms. Chem Soc Rev 2014; 43:3041-105. [DOI: 10.1039/c3cs60457h] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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95
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Frenking G, Tonner R, Klein S, Takagi N, Shimizu T, Krapp A, Pandey KK, Parameswaran P. New bonding modes of carbon and heavier group 14 atoms Si–Pb. Chem Soc Rev 2014; 43:5106-39. [DOI: 10.1039/c4cs00073k] [Citation(s) in RCA: 196] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Molecules which possess chemical bonds where a bare group-14 atom C–Pb is bonded to σ-donor ligands L or to a transition metal fragment [TM] through donor–acceptor interactions are discussed together with an analysis of the bonding situation with modern quantum chemical methods.
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Affiliation(s)
- Gernot Frenking
- Fachbereich Chemie
- Philipps-Universität Marburg
- D-35032 Marburg, Germany
| | - Ralf Tonner
- Fachbereich Chemie
- Philipps-Universität Marburg
- D-35032 Marburg, Germany
| | - Susanne Klein
- Fachbereich Chemie
- Philipps-Universität Marburg
- D-35032 Marburg, Germany
| | - Nozomi Takagi
- Fukui Institute of Fundamental Chemistry
- Kyoto University
- Japan
| | - Takayazu Shimizu
- Fachbereich Chemie
- Philipps-Universität Marburg
- D-35032 Marburg, Germany
| | - Andreas Krapp
- Fachbereich Chemie
- Philipps-Universität Marburg
- D-35032 Marburg, Germany
| | - Krishna K. Pandey
- School of Chemical Sciences
- Devi Ahilya University Indore
- Indore-452017, India
| | - Pattiyil Parameswaran
- Department of Chemistry
- National Institute of Technology Calicut
- Calicut - 673 601, India
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96
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Flock J, Suljanovic A, Torvisco A, Schoefberger W, Gerke B, Pöttgen R, Fischer RC, Flock M. The Role of 2,6-Diaminopyridine Ligands in the Isolation of an Unprecedented, Low-Valent Tin Complex. Chemistry 2013; 19:15504-17. [DOI: 10.1002/chem.201301340] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Indexed: 11/10/2022]
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97
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Barua SR, Allen WD, Kraka E, Jerabek P, Sure R, Frenking G. Nearly Degenerate Isomers of C(BH)2: Cumulene, Carbene, or Carbone? Chemistry 2013; 19:15941-54. [DOI: 10.1002/chem.201302181] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Indexed: 11/07/2022]
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98
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Broeckaert L, Frenking G, Geerlings P, De Proft F. Reactivity of Dicoordinated Stannylones (Sn
0
) versus Stannylenes (Sn
II
): An Investigation Using DFT‐Based Reactivity Indices. Chemphyschem 2013; 14:3233-47. [DOI: 10.1002/cphc.201300596] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Lies Broeckaert
- Department of General Chemistry (ALGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels (Belgium)
| | - Gernot Frenking
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße, 35032 Marburg (Germany)
| | - Paul Geerlings
- Department of General Chemistry (ALGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels (Belgium)
| | - Frank De Proft
- Department of General Chemistry (ALGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels (Belgium)
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99
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Li Y, Mondal KC, Roesky HW, Zhu H, Stollberg P, Herbst-Irmer R, Stalke D, Andrada DM. Acyclic germylones: congeners of allenes with a central germanium atom. J Am Chem Soc 2013; 135:12422-8. [PMID: 23869553 DOI: 10.1021/ja406112u] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The cyclic alkyl(amino) carbene (cAAC:)-stabilized acyclic germylones (Me2-cAAC:)2Ge (1) and (Cy2-cAAC:)2Ge (2) were prepared utilizing a one-pot synthesis of GeCl2(dioxane), cAAC:, and KC8 in a 1:2:2.1 molar ratio. Dark green crystals of compounds 1 and 2 were produced in 75 and 70% yields, respectively. The reported methods for the preparation of the corresponding silicon compounds turned out to be not applicable in the case of germanium. The single-crystal X-ray structures of 1 and 2 feature the C-Ge-C bent backbone, which possesses a three-center two-electron π-bond system. Compounds 1 and 2 are the first acyclic germylones containing each one germanium atom and two cAAC: molecules. EPR measurements on compounds 1 and 2 confirmed the singlet spin ground state. DFT calculations on 1/2 revealed that the singlet ground state is more stable by ~16 to 18 kcal mol(-1) than that of the triplet state. First and second proton affinity values were theoretically calculated to be of 265.8 (1)/267.1 (2) and 180.4 (1)/183.8 (2) kcal mol(-1), respectively. Further calculations, which were performed at different levels suggest a singlet diradicaloid character of 1 and 2. The TD-DFT calculations exhibit an absorption band at ~655 nm in n-hexane solution that originates from the diradicaloid character of germylones 1 and 2.
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Affiliation(s)
- Yan Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China
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100
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Celik MA, Frenking G, Neumüller B, Petz W. Exploiting the Twofold Donor Ability of Carbodiphosphoranes: Theoretical Studies of [(PPh3)2C→EH2]q(Eq=Be, B+, C2+, N3+, O4+) and Synthesis of the Dication [(Ph3P)2CCH2]2+. Chempluschem 2013; 78:1024-1032. [DOI: 10.1002/cplu.201300169] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Indexed: 11/06/2022]
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