1
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Le TV, Ramachandru GG, Daugulis O. Trifluoroethylation and Pentafluoropropylation of C(sp 3)-H Bonds. Chemistry 2024; 30:e202303190. [PMID: 38011542 DOI: 10.1002/chem.202303190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 11/29/2023]
Abstract
Polyfluorinated substituents often enhance effectiveness, improve the stability within metabolic processes, and boost the lipophilicity of biologically active compounds. However, methods for their introduction into aliphatic carbon chains remain very limited. A potentially general route to integrate the fluorinated scaffolds into organic molecules involves insertion of fluorine-containing carbenes into C(sp3)-H bonds. The electron-withdrawing characteristics of perfluoroalkyl groups enhances the reactivity of these carbenes which should enable the functionalization of unactivated C(sp3)-H bonds. Curiously, it appears that use of perfluoroalkyl-containing carbenes in alkane C-H functionalization is exceedingly rare. This concept describes photolysis, enzymatic catalysis, and transition metal catalysis as three primary approaches to C(sp3)-H functionalization by trifluoromethylcarbene and its homologues.
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Affiliation(s)
- Thanh V Le
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, USA
| | - Girish G Ramachandru
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, USA
| | - Olafs Daugulis
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, USA
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2
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Maekawa M, Hayashi T, Sugimoto K, Okubo T, Kuroda-Sowa T. Structural diversity of copper(I)-ethylene complexes with 2,4-bis(2-pyridyl)pyrimidine directed by anions. Dalton Trans 2023; 52:14941-14948. [PMID: 37800189 DOI: 10.1039/d3dt02618c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
The 3 : 1 reaction of [Cu(C2H4)n]ClO4 with 2,4-bis(2-pyridyl)pyrimidine (bpprd) in Me2CO under C2H4 afforded yellow prism crystals of the dinuclear Cu(I)-C2H4 complex [Cu2(bpprd)(η2-C2H4)2(ClO4)2] (1). The 3 : 1 reaction of [Cu(C2H4)n]NO3 with bpprd in Me2CO under C2H4 afforded yellow plate crystals of the tetranuclear Cu(I)-C2H4 complex [Cu4(bpprd)2(η2-C2H4)4(μ-NO3)2](NO3)2 (2). The 10 : 1 reaction of [Cu(C2H4)n]BF4 with bpprd in Me2CO under C2H4 afforded yellow plate crystals of the dinuclear Cu(I)-C2H4 complex [Cu2(bpprd)(η2-C2H4)2(BF4)]BF4 (3). The 3 : 1 reaction of [Cu(C2H4)n]BF4 with bpprd in Me2CO under C2H4 afforded red prism crystals of the polymeric Cu(I)-C2H4 complex {[Cu6(bpprd)4(η2-C2H4)2(μ-η2:η2-C2H4)(μ-BF4)2](BF4)4}n (4). The X-ray crystal structures of complexes 1-4 have been determined. The structural diversity of Cu(I)-C2H4 complexes bridged by bpprd with different anions was demonstrated. The 1D Cu(I)-bpprd/C2H4 coordination polymer 4 bridged by unusual μ-η2:η2-C2H4 and the μ-BF4- anion is of particular significance. Complex 1 exhibited relatively well-resolved 1H NMR signals of bpprd and C2H4 (δ = 4.97 ppm) in (CD3)2CO at 23 °C.
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Affiliation(s)
- Masahiko Maekawa
- Research Institute for Science and Technology, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Terumasa Hayashi
- Department of Chemistry, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kunihisa Sugimoto
- Department of Chemistry, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Takashi Okubo
- Department of Chemistry, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Takayoshi Kuroda-Sowa
- Department of Chemistry, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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3
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Muñoz-Castro A, Dias HVR. Bonding and 13 C-NMR properties of coinage metal tris(ethylene) and tris(norbornene) complexes: Evaluation of the role of relativistic effects from DFT calculations. J Comput Chem 2022; 43:1848-1855. [PMID: 36073752 DOI: 10.1002/jcc.26987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 07/28/2022] [Accepted: 08/02/2022] [Indexed: 11/10/2022]
Abstract
The π-complexes of cationic coinage metal ions (Cu(I), Ag(I), Au(I)) provide useful experimental support for understanding fundamental characteristics of bonding and 13 C-NMR patterns of the group 11 triad. Here, we account for the role of relativistic effects on olefin-coinage metal ion interaction for cationic, homoleptic tris-ethylene, and tris-norbornene complexes, [M(η2 -C2 H4 )3 ]+ and [M(η2 -C7 H10 )3 ]+ (M = Cu, Ag, Au), as representative case of studies. The M-(CC) bond strength in the cationic, tris-ethylene complexes is affected sizably for Au and to a lesser extent for Ag and Cu (48.6%, 16.7%, and 4.3%, respectively), owing to the influence on the different stabilizing terms accounting for the interaction energy in the formation of coinage metal cation-π complexes. The bonding elements provided by olefin → M σ-donation and olefin ← M π-backbonding are consequently affected, leading to a lesser covalent interaction going down in the triad if the relativistic effects are ignored. Analysis of the 13 C-NMR tensors provides further understanding of the observed experimental values, where the degree of backbonding charge donation to π2 *-olefin orbital is the main influence on the observed high-field shifts in comparison to the free olefin. This donation is larger for ethylene complexes and lower for norbornene counterparts. However, the bonding energy in the later complexes is slightly stabilized given by the enhancement in the electrostatic character of the interaction. Thus, the theoretical evaluation of metal-alkene bonds, and other metal-bonding situations, benefits from the incorporation of relativistic effects even in lighter counterparts, which have an increasing role going down in the group.
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Affiliation(s)
- Alvaro Muñoz-Castro
- Facultad de Ingeniería, Arquitectura y Diseño, Universidad San Sebastián, Santiago, Chile
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, USA
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4
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Klimovica K, Heidlas JX, Romero I, Le TV, Daugulis O. “Sandwich” Diimine‐Copper Catalysts for C−H Functionalization by Carbene Insertion. Angew Chem Int Ed Engl 2022; 61:e202200334. [PMID: 35594167 PMCID: PMC9329213 DOI: 10.1002/anie.202200334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Indexed: 11/12/2022]
Abstract
We report here "sandwich" diimine-copper(I) catalysts for C(sp3 )-H bond functionalization. Reactions of alkanes and ethers with trimethylsilyldiazomethane, ethyl diazoacetate, and trifluoromethyl-diazomethane have been demonstrated. We also report C(sp3 )-H bond methylation, benzylation, and diphenylmethylation by diazomethane, aryldiazomethanes, and diphenyldiazomethane. These reactions are rare examples of base-metal catalyzed, intermolecular C(sp3 )-H functionalizations by employing unactivated diazo compounds. Electrophilicity and unique steric environment of "sandwich"-copper catalysts are likely reasons for their catalytic efficiency.
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Affiliation(s)
- Kristine Klimovica
- Department of Chemistry University of Houston 3585 Cullen Blvd. Houston TX USA
| | - Julius X. Heidlas
- Department of Chemistry University of Houston 3585 Cullen Blvd. Houston TX USA
| | - Irvin Romero
- Department of Chemistry University of Houston 3585 Cullen Blvd. Houston TX USA
| | - Thanh V. Le
- Department of Chemistry University of Houston 3585 Cullen Blvd. Houston TX USA
| | - Olafs Daugulis
- Department of Chemistry University of Houston 3585 Cullen Blvd. Houston TX USA
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5
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Klimovica K, Heidlas JX, Romero I, Le TV, Daugulis O. “Sandwich” Diimine‐Copper Catalysts for C‐H Functionalization by Carbene Insertion. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | | | - Olafs Daugulis
- University of Houston Chemistry Fleming 112 77204-5003 Houston UNITED STATES
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6
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Peralta RA, Huxley MT, Albalad J, Sumby CJ, Doonan CJ. Single-Crystal-to-Single-Crystal Transformations of Metal-Organic-Framework-Supported, Site-Isolated Trigonal-Planar Cu(I) Complexes with Labile Ligands. Inorg Chem 2021; 60:11775-11783. [PMID: 34160208 DOI: 10.1021/acs.inorgchem.1c00849] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Transition-metal complexes bearing labile ligands can be difficult to isolate and study in solution because of unwanted dinucleation or ligand substitution reactions. Metal-organic frameworks (MOFs) provide a unique matrix that allows site isolation and stabilization of well-defined transition-metal complexes that may be of importance as moieties for gas adsorption or catalysis. Herein we report the development of an in situ anion metathesis strategy that facilitates the postsynthetic modification of Cu(I) complexes appended to a porous, crystalline MOF. By exchange of coordinated chloride for weakly coordinating anions in the presence of carbon monoxide (CO) or ethylene, a series of labile MOF-appended Cu(I) complexes featuring CO or ethylene ligands are prepared and structurally characterized using X-ray crystallography. These complexes have an uncommon trigonal planar geometry because of the absence of coordinating solvents. The porous host framework allows small and moderately sized molecules to access the isolated Cu(I) sites and displace the "place-holder" CO ligand, mirroring the ligand-exchange processes involved in Cu-centered catalysis.
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Affiliation(s)
- Ricardo A Peralta
- Centre for Advanced Nanomaterials and Department of Chemistry, The University of Adelaide, North Terrace, Adelaide, South Australia 5000, Australia
| | - Michael T Huxley
- Centre for Advanced Nanomaterials and Department of Chemistry, The University of Adelaide, North Terrace, Adelaide, South Australia 5000, Australia
| | - Jorge Albalad
- Centre for Advanced Nanomaterials and Department of Chemistry, The University of Adelaide, North Terrace, Adelaide, South Australia 5000, Australia
| | - Christopher J Sumby
- Centre for Advanced Nanomaterials and Department of Chemistry, The University of Adelaide, North Terrace, Adelaide, South Australia 5000, Australia
| | - Christian J Doonan
- Centre for Advanced Nanomaterials and Department of Chemistry, The University of Adelaide, North Terrace, Adelaide, South Australia 5000, Australia
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7
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O'Dea C, Ugarte Trejo O, Arras J, Ehnbom A, Bhuvanesh N, Stollenz M. Ethylene-Bridged Hexadentate Bis(amidines) and Bis(amidinates) with Variable Binding Sites. J Org Chem 2019; 84:14217-14226. [PMID: 31560534 DOI: 10.1021/acs.joc.9b01908] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Hexadentate bis(amidines) form versatile networks of hydrogen bonds both in solid state and solution, as revealed by X-ray crystallography, IR, and NMR spectroscopy. Moreover, the corresponding bis(amidinates) produce blue and green emissions in THF solution. Tethered tetradentate bis(amidines) have emerged in coordination chemistry, enantioselective catalysis, as building blocks for polyfunctional heterocycles, and in photoluminescent materials. The next generation of flexible bis(amidine)/bis(amidinate) platforms with up to six N-donor sites has now been established.
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Affiliation(s)
- Connor O'Dea
- Department of Chemistry and Biochemistry , Kennesaw State University , 370 Paulding Avenue NW , MD #1203, Kennesaw , Georgia 30144 , United States
| | - Omar Ugarte Trejo
- Department of Chemistry and Biochemistry , Kennesaw State University , 370 Paulding Avenue NW , MD #1203, Kennesaw , Georgia 30144 , United States
| | - Janet Arras
- Department of Chemistry and Biochemistry , Kennesaw State University , 370 Paulding Avenue NW , MD #1203, Kennesaw , Georgia 30144 , United States
| | - Andreas Ehnbom
- Department of Chemistry , Texas A&M University , 580 Ross Street , P.O. Box 30012, College Station , Texas 77842-3012 , United States
| | - Nattamai Bhuvanesh
- Department of Chemistry , Texas A&M University , 580 Ross Street , P.O. Box 30012, College Station , Texas 77842-3012 , United States
| | - Michael Stollenz
- Department of Chemistry and Biochemistry , Kennesaw State University , 370 Paulding Avenue NW , MD #1203, Kennesaw , Georgia 30144 , United States
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8
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Guifarro Calona CR, Filatov AS, Pedro B, Rybak-Akimova EV. Nickel Promoted Condensation of Acetamide and Benzonitrile for the Synthesis of an Imidoylamidine (N-NacNac) via Stable Imidoylamide Intermediate. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Brian Pedro
- Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
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9
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Guo Z, Liu F, Tong H, Chao J, Wang H, Zhou M. 1,3,5-Triazapentadienyltin(II) complexes and the additional reaction of phenylamine with N,N'-diisopropylcarbodiimide. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Ridlen SG, Kulkarni NV, Dias HVR. Monoanionic, Bis(pyrazolyl)methylborate [(Ph 3B)CH(3,5-(CH 3) 2Pz) 2)] - as a Supporting Ligand for Copper(I)-ethylene, cis-2-Butene, and Carbonyl Complexes. Inorg Chem 2017; 56:7237-7246. [PMID: 28541048 DOI: 10.1021/acs.inorgchem.7b00878] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The monoanionic bidentate ligand [(Ph3B)CH(3,5-(CH3)2Pz)2)]- has been prepared from lithium bis(pyrazolyl)methanide and triphenylborane. This useful new ligand is closely related to the well-established bis(pyrazolyl)borate and bis(pyrazolyl)methane ligands but has key differences to both analogues as well. The ethylene, cis-2-butene, and carbon monoxide adducts [(Ph3B)CH(3,5-(CH3)2Pz)2]Cu(L) (where L = C2H4, cis-CH3HC═CHCH3, and CO) have been prepared from [(Ph3B)CH(3,5-(CH3)2Pz)2)]Li(THF), copper(I) triflate, and the corresponding coligand. These complexes have been characterized by NMR spectroscopy and X-ray crystallography. In all cases the bis(pyrazolyl) moiety is bound in κ2N fashion with the BPh3 group rotated to sit over the metal center, sometimes coordinating to the metal via phenyl carbons as in [(Ph3B)CH(3,5-(CH3)2Pz)2)]Li(THF) and [(Ph3B)CH(3,5-(CH3)2Pz)2]Cu(CO) or simply hovering above the metal site as in [(Ph3B)CH(3,5-(CH3)2Pz)2)]Cu(C2H4) and [(Ph3B)CH(3,5-(CH3)2Pz)2)]Cu(cis-CH3HC═CHCH3). The 13C and 1H resonances of the ethylene carbon and protons of [(Ph3B)CH(3,5-(CH3)2Pz)2)]Cu(C2H4) appear at δ 81.0 and 3.71 ppm in CD2Cl2, respectively. The characteristic CO frequency for [(Ph3B)CH(3,5-(CH3)2Pz)2]Cu(CO) has been observed at υ̅ 2092 cm-1 by infrared spectroscopy and is lower than that of free CO suggesting moderate M → CO π-back-donation. A detailed analysis of these complexes has been presented herein.
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Affiliation(s)
- Shawn G Ridlen
- Department of Chemistry and Biochemistry, The University of Texas at Arlington , Arlington, Texas 76019, United States
| | - Naveen V Kulkarni
- Department of Chemistry and Biochemistry, The University of Texas at Arlington , Arlington, Texas 76019, United States
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington , Arlington, Texas 76019, United States
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11
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Singh S, Wang G, Mao JX, Flores JA, Kou X, Campana C, Kroll P, Dias HVR. Gold(I) Complexes [N{(C
3
F
7
)C(Dipp)N}
2
]AuL (L = Ethylene,
tert
‐Butyl Isocyanide, Tetrahydrothiophene, Triphenylphosphine) and Different Triazapentadienyl Ligand Coordination Modes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shreeyukta Singh
- Department of Chemistry and BiochemistryThe University of Texas at Arlington76019ArlingtonTexasUSA
| | - Guocang Wang
- Department of Chemistry and BiochemistryThe University of Texas at Arlington76019ArlingtonTexasUSA
| | - James X. Mao
- Department of Chemistry and BiochemistryThe University of Texas at Arlington76019ArlingtonTexasUSA
| | - Jaime A. Flores
- Department of Chemistry and BiochemistryThe University of Texas at Arlington76019ArlingtonTexasUSA
| | - Xiaodi Kou
- Department of Chemistry and BiochemistryThe University of Texas at Arlington76019ArlingtonTexasUSA
| | - Charles Campana
- Single Crystal DiffractionBruker AXS Inc.53711MadisonWisconsinUSA
| | - Peter Kroll
- Department of Chemistry and BiochemistryThe University of Texas at Arlington76019ArlingtonTexasUSA
| | - H. V. Rasika Dias
- Department of Chemistry and BiochemistryThe University of Texas at Arlington76019ArlingtonTexasUSA
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12
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Ramakrishna K, Sivasankar C. Synthesis of Aminobenzoic Acid Derivatives via Chemoselective Carbene Insertion into the -NH Bond Catalyzed by Cu(I) Complex. J Org Chem 2016; 81:6609-16. [PMID: 27392207 DOI: 10.1021/acs.joc.6b01249] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Phosphine ligand stabilized air-stable Cu(I) complexes have been successfully used to functionalize the aromatic aminobenzoic acids in a chemoselective manner without implementing protection and deprotection strategy under mild reaction conditions. This chemoselective carbene insertion into -NH bond over -COOH and -OH bonds leads to the wide range of carboxy and hydroxy functionalized α-amino esters (27 examples). All of the isolated new products have been fully characterized using standard analytical methods.
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Affiliation(s)
- Kankanala Ramakrishna
- Catalysis and Energy Laboratory, Department of Chemistry, Pondicherry University (A Central University) , Puducherry 605014, India
| | - Chinnappan Sivasankar
- Catalysis and Energy Laboratory, Department of Chemistry, Pondicherry University (A Central University) , Puducherry 605014, India
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13
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Kulkarni NV, Das A, Ridlen SG, Maxfield E, Adiraju VAK, Yousufuddin M, Dias HVR. Fluorinated triazapentadienyl ligand supported ethyl zinc(ii) complexes: reaction with dioxygen and catalytic applications in the Tishchenko reaction. Dalton Trans 2016; 45:4896-906. [PMID: 26875862 DOI: 10.1039/c6dt00257a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ethyl zinc complexes [N{(C3F7)C(Dipp)N}2]ZnEt, [N{(C3F7)C(Cy)N}2]ZnEt, [N{(CF3)C(2,4,6-Br3C6H2)N}2]ZnEt and [N{(C3F7)C(2,6-Cl2C6H3)N}2]ZnEt have been synthesized from the corresponding 1,3,5-triazapentadiene and diethyl zinc. X-ray data show that [N{(C3F7)C(Dipp)N}2]ZnEt has a distorted trigonal planar geometry at the zinc center. The triazapentadienyl ligand binds to zinc in a κ(2)-mode. The zinc-ethyl bonds of [N{(C3F7)C(Dipp)N}2]ZnEt, [N{(C3F7)C(Cy)N}2]ZnEt, [N{(CF3)C(2,4,6-Br3C6H2)N}2]ZnEt and [N{(C3F7)C(2,6-Cl2C6H3)N}2]ZnEt readily undergo oxygen insertion upon exposure to dry air to produce the corresponding zinc-ethoxy or zinc-ethylperoxy compounds. The ethoxy zinc adducts {[N{(CF3)C(2,4,6-Br3C6H2)N}2]ZnOEt}2 and {[N{(C3F7)C(2,6-Cl2C6H3)N}2]ZnOEt}2 as well as the ethylperoxy zinc adduct {[N{(C3F7)C(Cy)N}2]ZnOOEt}2 have been isolated and fully characterized by several methods including X-ray crystallography. They feature dinuclear structures with four-coordinate zinc sites and bridging-ethoxy or -ethylperoxy groups. The ethyl zinc complexes catalyze the Tishchenko reaction of benzaldehyde under solventless conditions affording benzyl benzoate. The reaction of ethyl zinc complexes with dioxygen and their catalytic behaviour in the Tishchenko reaction are affected by the electronic and steric factors of the triazapentadienyl ligand. {[N{(C3F7)C(Cy)N}2]ZnOOEt}2 is an excellent reagent for the epoxidation of trans-chalcone.
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Affiliation(s)
- Naveen V Kulkarni
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
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15
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Cao HJ, Zhao Q, Zhang QF, Li J, Hamilton EJM, Zhang J, Wang LS, Chen X. Catalyst design based on agostic interactions: synthesis, characterization, and catalytic activity of bis(pyrazolyl)borate copper complexes. Dalton Trans 2016; 45:10194-9. [DOI: 10.1039/c6dt01272h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The first example of designed catalysts based on the agostic-like weak interaction acts as a “switch” which will be turned “on” and “off” during the catalytic process.
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Affiliation(s)
- Hou-Ji Cao
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials
- Henan Normal University
- Xinxiang
- China
| | - Qianyi Zhao
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials
- Henan Normal University
- Xinxiang
- China
| | | | - Jiaxuan Li
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials
- Henan Normal University
- Xinxiang
- China
| | - Ewan J. M. Hamilton
- Department of Chemistry and Biochemistry
- The Ohio State University at Lima
- Lima
- USA
| | - Jie Zhang
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials
- Henan Normal University
- Xinxiang
- China
| | | | - Xuenian Chen
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials
- Henan Normal University
- Xinxiang
- China
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16
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Li F, Yan L, Tong H, Zhou M. Crystal structure of [1-(2,6-diiso-propyl-phen-yl)-2,4-bis-(di-methyl-amino)-5-tri-methyl-silyl-1,3,5-tri-aza-penta-dienyl-κ(2) N (1),N (5)](tri-phenyl-phosphane-κP)copper(I). Acta Crystallogr E Crystallogr Commun 2015; 71:m54. [PMID: 25844205 PMCID: PMC4350696 DOI: 10.1107/s2056989015002169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 02/02/2015] [Indexed: 11/25/2022]
Abstract
The title complex, [Cu(C21H38N5Si)(C18H15P)], was obtained from the one-pot reaction between (Dipp)N(Li)SiMe3 (Dipp = 2,6-diiso-propyl-phen-yl), Me2NCN, CuCl and PPh3. The Cu(I) atom has a distorted trigonal-planar coordination sphere. The tri-aza-penta-dienyl ligand acts as a κ(2)-donor. The N-Cu-N bond angle is 95.88 (14)°. In the tri-aza-penta-dienyl fragment, the C-N bond lengths are in the range 1.328 (5)-1.349 (5) Å, which indicates delocalization of the π-electrons in the NCNCN system.
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Affiliation(s)
- Feiguang Li
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi 030006, People’s Republic of China
| | - Lei Yan
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi 030006, People’s Republic of China
| | - Hongbo Tong
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi 030006, People’s Republic of China
| | - Meisu Zhou
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi 030006, People’s Republic of China
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17
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Chang MC, Roewen P, Travieso-Puente R, Lutz M, Otten E. Formazanate Ligands as Structurally Versatile, Redox-Active Analogues of β-Diketiminates in Zinc Chemistry. Inorg Chem 2014; 54:379-88. [DOI: 10.1021/ic5025873] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mu-Chieh Chang
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Peter Roewen
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Raquel Travieso-Puente
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Martin Lutz
- Bijvoet
Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Edwin Otten
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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18
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Xie Q, Tong H, Zhou M. Synthesis, structure, and magnetic properties of novel 1,3,5-triazapentadienyl copper(II) complexes [N(2,6-iPr2-C6H3)C(NMe2)NC(NMe2)N(SiMe3)]CuCl and [N(Ph)C(NMe2)NC(NMe2)N(SiMe3)]2Cu. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.02.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Maekawa M, Miyazaki T, Sugimoto K, Okubo T, Kuroda-Sowa T, Munakata M, Kitagawa S. Preparations and structural diversity of copper(I) ethylene adducts with related 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine ligands. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.10.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Das A, Dash C, Celik MA, Yousufuddin M, Frenking G, Dias HVR. Tris(alkyne) and Bis(alkyne) Complexes of Coinage Metals: Synthesis and Characterization of (cyclooctyne)3M+ (M = Cu, Ag) and (cyclooctyne)2Au+ and Coinage Metal (M = Cu, Ag, Au) Family Group Trends. Organometallics 2013. [DOI: 10.1021/om400073a] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Animesh Das
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Chandrakanta Dash
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Mehmet Ali Celik
- Fachbereich Chemie, Philipps-Universität Marburg,
D-35039 Marburg, Germany
| | - Muhammed Yousufuddin
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Gernot Frenking
- Fachbereich Chemie, Philipps-Universität Marburg,
D-35039 Marburg, Germany
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
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21
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Liu F, Qiao X, Wang M, Zhou M, Tong H, Guo D, Liu D. Syntheses, crystal structures and properties of four iron and cobalt complexes bearing 1,3,5-triazapentadienyl ligands. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.07.093] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Nebra N, Lescot C, Dauban P, Mallet-Ladeira S, Martin-Vaca B, Bourissou D. Intermolecular Alkene Aziridination: An Original and Efficient CuI···CuIDinuclear Catalyst Deriving from a Phospha-Amidinate Ligand. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201478] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Affiliation(s)
- Shengwen Liang
- Department of Chemistry
and Biochemistry, Ohio University, Athens, Ohio 45701, United States
| | - Michael P. Jensen
- Department of Chemistry
and Biochemistry, Ohio University, Athens, Ohio 45701, United States
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24
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Adiraju VA, Flores JA, Yousufuddin M, Dias HVR. Copper(I) Ethylene Complexes Supported by 1,3,5-Triazapentadienyl Ligands with Electron-Withdrawing Groups. Organometallics 2012. [DOI: 10.1021/om300567v] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Venkata A.K. Adiraju
- Department of Chemistry
and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Jaime A. Flores
- Department of Chemistry
and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Muhammed Yousufuddin
- Department of Chemistry
and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - H. V. Rasika Dias
- Department of Chemistry
and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
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25
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Ángeles Fuentes M, Álvarez E, Caballero A, Pérez PJ. [(PhBP3)Cu(PPh3)] as a Surrogate of TpxCuL in Homogeneous Catalysis (PhBP3 = PhB(CH2PPh2)3; Tpx = Hydrotrispyrazolylborate). Organometallics 2012. [DOI: 10.1021/om201016b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Ángeles Fuentes
- Laboratorio
de Catálisis
Homogénea, Departamento
de Química y Ciencia de los Materiales, Unidad
Asociada al CSIC, Centro de Investigación en Química
Sostenible (CIQSO), Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas, (CSIC-US), C/Americo Vespucio 49, 41092
Sevilla, Spain
| | - Ana Caballero
- Laboratorio
de Catálisis
Homogénea, Departamento
de Química y Ciencia de los Materiales, Unidad
Asociada al CSIC, Centro de Investigación en Química
Sostenible (CIQSO), Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
| | - Pedro J. Pérez
- Laboratorio
de Catálisis
Homogénea, Departamento
de Química y Ciencia de los Materiales, Unidad
Asociada al CSIC, Centro de Investigación en Química
Sostenible (CIQSO), Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
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26
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Maekawa M, Tominaga T, Sugimoto K, Okubo T, Kuroda-Sowa T, Munakata M, Kitagawa S. Framework dimensionality of copper(i) coordination polymers of 4,4′-bipyrimidine controlled by anions and solvents. CrystEngComm 2012. [DOI: 10.1039/c1ce06328f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Kopylovich MN, Karabach YY, Guedes da Silva MFC, Figiel PJ, Lasri J, Pombeiro AJL. Alkoxy-1,3,5-triazapentadien(e/ato) Copper(II) Complexes: Template Formation and Applications for the Preparation of Pyrimidines and as Catalysts for Oxidation of Alcohols to Carbonyl Products. Chemistry 2011; 18:899-914. [DOI: 10.1002/chem.201101688] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Revised: 09/08/2011] [Indexed: 01/13/2023]
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28
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Flores JA, Kobayashi Y, Dias HVR. Synthesis and characterization of silver(I) adducts supported solely by 1,3,5-triazapentadienyl ligands or by triazapentadienyl and other N-donors. Dalton Trans 2011; 40:10351-9. [PMID: 21442088 DOI: 10.1039/c1dt10199d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Halogenated 1,3,5-triazapentadienyl ligands [N{(C(3)F(7))C(C(6)F(5))N}(2)](-), [N{(CF(3))C(C(6)F(5))N}(2)](-) and [N{(C(3)F(7))C(2,6-Cl(2)C(6)H(3))N}(2)](-), alone or in combination with other N-donors like CH(3)CN, CH(3)(CH(2))(2)CN, and N(C(2)H(5))(3), have been used in the stabilization of thermally stable, two-, three- or four-coordinate silver(i) adducts. X-Ray crystallographic analyses of {[N{(C(3)F(7))C(C(6)F(5))N}(2)]Ag}(n), {[N{(C(3)F(7))C(C(6)F(5))N}(2)]Ag(NCCH(3))}(n), {[N{(C(3)F(7))C(2,6-Cl(2)C(6)H(3))N}(2)]Ag(NCCH(3))}(n), {[N{(CF(3))C(C(6)F(5))N}(2)]Ag(NCCH(3))(2)}(n) and {[N{(C(3)F(7))C(C(6)F(5))N}(2)]Ag(NCC(3)H(7))}(n) revealed the presence of bridging 1,3,5-triazapentadienyl ligands bonded to silver through terminal nitrogen atoms. These adducts are polymeric in the solid state. [N{(C(3)F(7))C(2,6-Cl(2)C(6)H(3))N}(2)]AgN(C(2)H(5))(3) is monomeric and features a 1,3,5-triazapentadienyl ligand bonded to Ag(I) in a κ(1)-fashion via only one of the terminal nitrogen atoms. The solid state structure of [N{(C(3)F(7))C(C(6)F(5))N}(2)]H has also been reported and it forms polymeric chains via inter-molecular N-H···N hydrogen-bonding.
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Affiliation(s)
- Jaime A Flores
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA
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29
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Schreiber DF, Ortin Y, Müller-Bunz H, Phillips AD. Application of Electron-Withdrawing Coordinatively Unsaturated η6-Arene β-Diketiminato–Ruthenium Complexes in Lewis Acid Catalyzed Diels–Alder Reactions. Organometallics 2011. [DOI: 10.1021/om200566a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dominique F. Schreiber
- School of Chemistry and Chemical Biology, University College Dublin, Belfield Dublin 4, Ireland
| | - Yannick Ortin
- School of Chemistry and Chemical Biology, University College Dublin, Belfield Dublin 4, Ireland
| | - Helge Müller-Bunz
- School of Chemistry and Chemical Biology, University College Dublin, Belfield Dublin 4, Ireland
| | - Andrew D. Phillips
- School of Chemistry and Chemical Biology, University College Dublin, Belfield Dublin 4, Ireland
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30
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Zhou M, Gong T, Qiao X, Tong H, Guo J, Liu D. Magnesium(II) Complexes of 2,4-N,N′-Disubstituted 1,3,5-Triazapentadienyl Ligands: Synthesis and Characterization of [N(Dipp)C(NMe2)NC(NMe2)N(SiMe3)MgBr]2 and [N(R)C(R′)NC(R′)N(SiMe3)]2Mg (Dipp = 2,6-iPr2−C6H3, R = Ph, SiMe3; R′ = NMe2, 1-piperidino). Inorg Chem 2011; 50:1926-30. [DOI: 10.1021/ic102401w] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Meisu Zhou
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, People’s Republic of China,
| | - Tao Gong
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, People’s Republic of China,
| | - Xiaoli Qiao
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, People’s Republic of China,
| | - Hongbo Tong
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, People’s Republic of China,
| | - Jianping Guo
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, People’s Republic of China,
| | - Diansheng Liu
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, People’s Republic of China,
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32
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Kopylovich MN, Kirillov AM, Tronova EA, Haukka M, Kukushkin VY, Pombeiro AJL. 1,3,5-Triazapentadiene Nickel(II) Complexes Derived from a Ketoxime-Mediated Single-Pot Transformation of Nitriles. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000019] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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