1
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Lv W, Cui HH, Chen L, Zhang YQ, Chen XT, Wang Z, Ouyang ZW, Xue ZL. Magnetic anisotropy of two tetrahedral Co(II)-halide complexes with triphenylphosphine ligands. Dalton Trans 2022; 51:7530-7538. [PMID: 35506535 DOI: 10.1039/d2dt00121g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recently, the choice of ligand and geometric control of mononuclear complexes, which can affect the relaxation pathways and blocking temperature, have received wide attention in the field of single-ion magnets (SIMs). To find out the influence of the coordination environment on SIMs, two four-coordinate mononuclear Co(II) complexes [NEt4][Co(PPh3)X3] (X = Cl-, 1; Br-, 2) have been synthesized and studied by X-ray single crystallography, magnetic measurements, high-frequency and -field EPR (HF-EPR) spectroscopy and theoretical calculations. Both complexes are in a cubic space group Pa3̄ (No. 205), containing a slightly distorted tetrahedral moiety with crystallographically imposed C3v symmetry through the [Co(PPh3)X3]- anion. The direct-current (dc) magnetic data and HF-EPR spectroscopy indicated the anisotropic S = 3/2 spin ground states of the Co(II) ions with the easy-plane anisotropy for 1 and 2. Ab initio calculations were performed to confirm the positive magnetic anisotropies of 1 and 2. Frequency- and temperature-dependent alternating-current (ac) magnetic susceptibility measurements revealed slow magnetic relaxation for 1 and 2 at an applied dc field. Finally, the magnetic properties of 1 and 2 were compared to those of other Co(II) complexes with a [CoAB3] moiety.
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Affiliation(s)
- Wei Lv
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Hui-Hui Cui
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Lei Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China
| | - Xue-Tai Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhong-Wen Ouyang
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zi-Ling Xue
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
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2
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Guo J, Zhang W, Liang T, Sun WH. Revisiting the 2-imino-1,10-phenanthrolylmetal precatalyst in ethylene oligomerization: Benzhydryl-modified cobalt(II) complexes and their dimerization of ethylene. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Duvvuri K, Dewese KR, Parsutkar MM, Jing SM, Mehta MM, Gallucci JC, RajanBabu TV. Cationic Co(I)-Intermediates for Hydrofunctionalization Reactions: Regio- and Enantioselective Cobalt-Catalyzed 1,2-Hydroboration of 1,3-Dienes. J Am Chem Soc 2019; 141:7365-7375. [PMID: 31020835 DOI: 10.1021/jacs.8b13812] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Much of the recent work on catalytic hydroboration of alkenes has focused on simple alkenes and styrene derivatives with few examples of reactions of 1,3-dienes, which have been reported to undergo mostly 1,4-additions to give allylic boronates. We find that reduced cobalt catalysts generated from 1,n- bis-diphenylphosphinoalkane complexes [Ph2P-(CH2) n-PPh2]CoX2; n = 1-5) or from (2-oxazolinyl)phenyldiarylphosphine complexes [(G-PHOX)CoX2] (G = 4-substituent on oxazoline ring) effect selective 1,2-, 1,4-, or 4,3-additions of pinacolborane (HBPin) to a variety of 1,3-dienes depending on the ligands chosen. Conditions have been found to optimize the 1,2-additions. The reactive catalysts can be generated from the cobalt(II)-complexes using trimethylaluminum, methyl aluminoxane, or activated zinc in the presence of sodium tetrakis[(3,5-trifluoromethyl)phenyl]borate (NaBARF). The complex, (dppp)CoCl2, gives the best results (ratio of 1,2- to 1,4-addition >95:5) for a variety of linear terminal 1,3-dienes and 2-substituted 1,3-dienes. The [(PHOX)CoX2] (X = Cl, Br) complexes give mostly 1,4-addition with linear unsubstituted 1,3-dienes, but, surprisingly, selective 1,2-additions with 2-substituted or 2,3-disubstituted 1,3-dienes. Isolated and fully characterized (X-ray crystallography) Co(I)-complexes, (dppp)3Co2Cl2 and [( S,S)-BDPP]3Co2Cl2, do not catalyze the reaction unless activated by a Lewis acid or NaBARF, suggesting a key role for a cationic Co(I) species in the catalytic cycle. Regio- and enantioselective 1,2-hydroborations of 2-substituted 1,3-dienes are best accomplished using a catalyst prepared via activation of a chiral phosphinooxazoline-cobalt(II) complex with zinc and NaBARF. A number of common functional groups, among them, -OBn, -OTBS, -OTs, N-phthalimido- groups, are tolerated, and er's > 95:5 are obtained for several dienes including 1-alkenylcycloalk-1-enes. This operationally simple reaction expands the realm of asymmetric hydroboration to provide direct access to a number of nearly enantiopure homoallylic boronates, which are not readily accessible by current methods. The resulting boronates have been converted into the corresponding alcohols, potassium trifluororoborate salts, N-BOC amines, and aryl derivatives by C-BPin to C-aryl transformation.
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Affiliation(s)
- Krishnaja Duvvuri
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States
| | - Kendra R Dewese
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States
| | - Mahesh M Parsutkar
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States
| | - Stanley M Jing
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States
| | - Milauni M Mehta
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States
| | - Judith C Gallucci
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States
| | - T V RajanBabu
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States
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4
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Gradiski MV, Tsui BTH, Lough AJ, Morris RH. PNN′ & P2NN′ ligands via reductive amination with phosphine aldehydes: synthesis and base-metal coordination chemistry. Dalton Trans 2019; 48:2150-2159. [DOI: 10.1039/c8dt04058c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Phosphorus-donor “arms” are readily added to amines in order to enable sturdy base metal coordination.
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Affiliation(s)
| | | | - Alan J. Lough
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
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5
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Syntheses, characterization and properties of silver, copper and palladium complexes from bis(oxazoline)-containing ligands. J SOLID STATE CHEM 2015. [DOI: 10.1016/j.jssc.2015.04.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Zhang S, Pattacini R, Braunstein P, De Cola L, Plummer E, Mauro M, Gourlaouen C, Daniel C. Synthesis, structure, and optical properties of Pt(II) and Pd(II) complexes with oxazolyl- and pyridyl-functionalized DPPM-type ligands: a combined experimental and theoretical study. Inorg Chem 2014; 53:12739-56. [PMID: 25420195 DOI: 10.1021/ic501566u] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
New square-planar complexes [Pt(1(-H))2] (2a) [1(-H) = (oxazolin-2-yl)bis(diphenylphosphino)methanide] and [Pd(1(-H))2] (2b), of general formula [M{(Ph2P)2C---C---NCH2CH2O}2] (M = Pt, 2a; M = Pd, 2b), result from deprotonation of 2-{bis(diphenylphosphino)methyl}oxazoline (1) at the PCHP site. The new, functionalized dppm-type ligand 4-{bis(diphenylphosphino)methyl}pyridine, (Ph2P)2CH(4-C5H4N) (4), was prepared by double lithiation and phosphorylation of 4-picoline. In the presence of NEt3, the reactions of 2 equiv of 4 with [PtCl2(NCPh)2] and [Pd(acac)2] (acac = acetylacetonate) afforded [Pt(4(-H))2] (5a) [4(-H) = bis(diphenylphosphino)(pyridin-4-yl)methanide] and [Pd(4(-H))2] (5b), of general formula [M{(Ph2P)2C(4-C5H4N)}2] (M = Pt, 5a; M = Pd, 5b), respectively. In the absence of base, the reactions of 2 equiv of 4 with [PtCl2(NCPh)2] and [PdCl2(NCPh)2] afforded (5a·2HCl) (6a) and (5b·2HCl) (6b), respectively, in which the PCHP proton of 4 has migrated from carbon to nitrogen to give a pyridinium derivative of general formula [M{(Ph2P)2C(4-C5H4NH)}2]Cl2 (M = Pt, 6a; M = Pd, 6b). The complexes 3a, 5a·2MeOH, and 6b·4CH2Cl2 have been structurally characterized by X-ray diffraction. The absorption/emission properties of the Pt(II) complexes 2a and 5a and the Pd(II) complexes 2b and 5b have been investigated by UV-vis spectroscopy and theoretical analysis based on density functional theory. The UV-vis absorption spectra of the neutral complexes recorded in dilute N,N'-dimethylformamide solutions are dominated by intense spin-allowed intraligand transitions in the region below 350 nm. The complexes exhibit charge-transfer bands between 350 and 500 nm. The experimental and theoretical absorption spectra agree qualitatively and point to two low-lying ligand-to-metal charge transfer states that contribute to the bands observed between 350 and 500 nm. The complexes are emissive in frozen solutions at 77 K, in the pure solid state, and when doped into films of poly(methyl methacrylate) but are nonemissive in solution. A red shift is observed when Pt(II) is replaced by Pd(II).
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Affiliation(s)
- Shuanming Zhang
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS/UdS), Université de Strasbourg , 4 rue Blaise Pascal, F-67081 Strasbourg, France
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7
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Chaubey B, Mobin SM, Balakrishna MS. P-Cl bond-induced lactamization of 2(2'-hydroxyl)phenyloxazoline to form a cyclic phosphinite, 3-(2-chloroethyl)-2-phenyl-2H-benzo[e][1,3,2]oxaza-phosphinin-4(3H)-one: synthesis, structural studies and transition metal complexes. Dalton Trans 2014; 43:584-91. [PMID: 24129746 DOI: 10.1039/c3dt52223g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The equimolar reaction between 2(2'-hydroxy)phenyloxazoline (1) and PPhCl2 in the presence of triethylamine afforded an unexpected cyclic product, phenyl-benzo-oxazaphosphininone (2), instead of a simple phosphinite derivative A. A similar reaction between 1 and PPhCl2 in 2 : 1 ratio also yielded the same product 2, but with one equivalent of 2(2'-hydroxy)phenyloxazoline (1) left unreacted. The formation of the cyclic product 2 is due to the P-Cl bond induced oxazoline ring opening followed by the formation of a six-membered γ-lactam type product, 3-(2-chloroethyl)-2-phenyl-2H-benzo[e][1,3,2]oxazaphosphinin-4(3H)-one (2 also referred to as L). The reactions of 2 with H2O2, elemental sulphur or elemental selenium yielded the corresponding chalcogenides, LE (3, E = O; 4, E = S; 5, E = Se) in quantitative yield. Treatment of 2 with [Ru(η(6)-Cymene)Cl2]2, [Pd(COD)Cl2] and [Pd(η(3)-C3H5)Cl]2 resulted in the formation of [RuCl2(η(6)-cymene)(L)] (6), [PdCl2{L}2] (7), and [Pd(η(3)-C3H5)Cl(L)] (8), respectively. The compound 2 obtained in the 2 : 1 reaction when treated with [Pd(η(3)-C3H5)Cl]2 gave the same palladium complex 8 (referred to as 9a), but co-crystallized with bis(oxazolyl)palladacycle (9b) as confirmed by single crystal X-ray analysis.
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Affiliation(s)
- Bimba Chaubey
- Phosphorus Laboratory, Department of Chemistry, Powai, Mumbai 400 076, India
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8
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Searles K, Das AK, Buell RW, Pink M, Chen CH, Pal K, Morgan DG, Mindiola DJ, Caulton KG. 2,2′-Pyridylpyrrolide Ligand Redistribution Following Reduction. Inorg Chem 2013; 52:5611-9. [DOI: 10.1021/ic400803e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keith Searles
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
| | - Atanu K. Das
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
| | - René W. Buell
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
| | - Maren Pink
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
| | - Chun-Hsing Chen
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
| | - Kuntal Pal
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
| | - David Gene Morgan
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
| | - Daniel J. Mindiola
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
| | - Kenneth G. Caulton
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United
States
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9
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Sandhya KS, Suresh CH. DFT study on the mechanism of water-assisted dihydrogen elimination in group 6 octahedral metal hydride complexes. Dalton Trans 2012; 41:11018-25. [DOI: 10.1039/c2dt31230a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Zhang S, Pattacini R, Jie S, Braunstein P. A phosphino-oxazolineligand as a P,N-bridge in palladium/cobalt or P,N-chelate in nickel complexes: catalytic ethylene oligomerization. Dalton Trans 2012; 41:379-86. [DOI: 10.1039/c1dt11352f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Pailloux S, Shirima CE, Duesler EN, Smith KA, Paine RT. Synthesis and lanthanide coordination chemistry of 2-[(phosphinoyl)methyl]-4,5-dihydrooxazole and 2-[(phosphinoyl)methyl]benzoxazole ligands. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.08.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Zhang S, Pattacini R, Braunstein P. Chelating or bridging Pd(ii) and Pt(ii) metalloligands from the functional phosphine ligand N-(diphenylphosphino)-1,3,4-thiadiazol-2-amine. New heterometallic Pd(ii)/Pt(ii) and Pt(ii)/Au(i) complexes. Dalton Trans 2011; 40:5711-9. [DOI: 10.1039/c0dt01782e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Zhang S, Pattacini R, Braunstein P. Reactions of a Phosphinoimino-thiazoline-Based Metalloligand with Organic and Inorganic Electrophiles and Metal-Induced Ligand Rearrangements. Organometallics 2010. [DOI: 10.1021/om100466n] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shuanming Zhang
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg, France
| | - Roberto Pattacini
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg, France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg, France
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14
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A new blue luminescent dichlorido-bridged dinuclear copper(II) complex with DNA binding and cytotoxic activities: Synthesis, structure and DFT studies. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.04.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Liu S, Peloso R, Braunstein P. Palladium and iridium complexes with a N,P,N-bis(pyridine)phenylphosphine ligand. Dalton Trans 2010; 39:2563-72. [DOI: 10.1039/b919679j] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Zhang J, Pattacini R, Braunstein P. Tridentate Assembling Ligands Based on Oxazoline and Phosphorus Donors in Dinuclear Pd(I)−Pd(I) Complexes. Inorg Chem 2009; 48:11954-62. [DOI: 10.1021/ic9018579] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Jing Zhang
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg Cedex, France
| | - Roberto Pattacini
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg Cedex, France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg Cedex, France
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17
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Rowley CN, Woo TK. Computational design of ruthenium hydride olefin-hydrogenation catalysts containing hemilabile ligands,. CAN J CHEM 2009. [DOI: 10.1139/v09-077] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Three ruthenium hydridocarbonyl complexes containing bidentate hemilabile ligands have been evaluated as possible catalysts for the H2 hydrogenation of olefins. Our previous investigations of the mainstay hydridoruthenium catalyst, RuHCl(CO)(PR3)2 (1), indicated that the rate-limiting olefin-insertion barrier was increased by the need for an H2 molecule to act as a stabilizing two-electron donor. Using density functional theory (DFT) calculations, we have determined that a P,N phosphane-oxazoline would be suitable for stabilizing the metal center of the complex RuHCl(CO)(PiPr3)(DZ), where DZ is a neutral bidentate hemilable ligand. In the reaction catalyzed by this complex, the olefin insertion occurs before the coordination of H2, avoiding the entropic penalty of coordinating H2. We predict that the phosphane-oxazoline containing catalyst will have higher activity than 1 and a different rate-law, zero-order in [H2]. The oxazoline increases the strength of coordination of the ethylene due to stronger back-donation from destabilized Ru d-orbitals to the ethylene π* molecular orbital.
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Affiliation(s)
- Christopher N. Rowley
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Tom K. Woo
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, ON K1N 6N5, Canada
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18
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Maggini S. Classification of P,N-binucleating ligands for hetero- and homobimetallic complexes. Coord Chem Rev 2009. [DOI: 10.1016/j.ccr.2009.01.030] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Rocha-Alonzo F, Aguirre G, Parra-Hake M. N-(2-Hydroxyethyl)-2-[3-( p-tolyl)triazen-1-yl]benzamide. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o990-1. [PMID: 21584027 PMCID: PMC2977684 DOI: 10.1107/s1600536809011908] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Accepted: 03/31/2009] [Indexed: 11/23/2022]
Abstract
In the solid state, the structure of the title compound, C16H18N4O2, is stabilized by intermolecular N—H⋯O and O—H⋯O hydrogen bonds. These hydrogen bonds arrange the molecules into a double-layer supramolecular structure. The molecular conformation is is consolidated by an intramolecular N—H⋯N hydrogen bond. The dihedral angle between the aromatic rings is 8.01 (10)°
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Gushchin PV, Kuznetsov ML, Haukka M, Wang MJ, Gribanov AV, Kukushkin VY. A Novel Reactivity Mode for Metal-Activated Dialkylcyanamide Species: Addition of N,N′-Diphenylguanidine to a cis-(R2NCN)2PtII Center Giving an Eight-Membered Chelated Platinaguanidine. Inorg Chem 2009; 48:2583-92. [DOI: 10.1021/ic802109d] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pavel V. Gushchin
- Department of Chemistry, St. Petersburg State University, 198504 Stary Petergof, Russian Federation, Department of Chemistry, Moscow Pedagogical State University, 119021 Moscow, Russian Federation, Department of Chemistry, University of Joensuu, P.O. Box 111, FI-80101 Joensuu, Finland, Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan, and Institute of Macromolecular Compounds, Russian Academy of Sciences, V. O
| | - Maxim L. Kuznetsov
- Department of Chemistry, St. Petersburg State University, 198504 Stary Petergof, Russian Federation, Department of Chemistry, Moscow Pedagogical State University, 119021 Moscow, Russian Federation, Department of Chemistry, University of Joensuu, P.O. Box 111, FI-80101 Joensuu, Finland, Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan, and Institute of Macromolecular Compounds, Russian Academy of Sciences, V. O
| | - Matti Haukka
- Department of Chemistry, St. Petersburg State University, 198504 Stary Petergof, Russian Federation, Department of Chemistry, Moscow Pedagogical State University, 119021 Moscow, Russian Federation, Department of Chemistry, University of Joensuu, P.O. Box 111, FI-80101 Joensuu, Finland, Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan, and Institute of Macromolecular Compounds, Russian Academy of Sciences, V. O
| | - Meng-Jiy Wang
- Department of Chemistry, St. Petersburg State University, 198504 Stary Petergof, Russian Federation, Department of Chemistry, Moscow Pedagogical State University, 119021 Moscow, Russian Federation, Department of Chemistry, University of Joensuu, P.O. Box 111, FI-80101 Joensuu, Finland, Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan, and Institute of Macromolecular Compounds, Russian Academy of Sciences, V. O
| | - Aleksander V. Gribanov
- Department of Chemistry, St. Petersburg State University, 198504 Stary Petergof, Russian Federation, Department of Chemistry, Moscow Pedagogical State University, 119021 Moscow, Russian Federation, Department of Chemistry, University of Joensuu, P.O. Box 111, FI-80101 Joensuu, Finland, Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan, and Institute of Macromolecular Compounds, Russian Academy of Sciences, V. O
| | - Vadim Yu. Kukushkin
- Department of Chemistry, St. Petersburg State University, 198504 Stary Petergof, Russian Federation, Department of Chemistry, Moscow Pedagogical State University, 119021 Moscow, Russian Federation, Department of Chemistry, University of Joensuu, P.O. Box 111, FI-80101 Joensuu, Finland, Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan, and Institute of Macromolecular Compounds, Russian Academy of Sciences, V. O
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Chavez P, Rios IG, Kermagoret A, Pattacini R, Meli A, Bianchini C, Giambastiani G, Braunstein P. Nickel Complexes with Phosphinito-Oxazoline Ligands: Temperature-Controlled Formation of Mono- or Dinuclear Complexes and Catalytic Oligomerization of Ethylene and Propylene. Organometallics 2009. [DOI: 10.1021/om8009848] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patricia Chavez
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France, and Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (Fi), Italy
| | - Itzel Guerrero Rios
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France, and Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (Fi), Italy
| | - Anthony Kermagoret
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France, and Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (Fi), Italy
| | - Roberto Pattacini
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France, and Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (Fi), Italy
| | - Andrea Meli
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France, and Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (Fi), Italy
| | - Claudio Bianchini
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France, and Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (Fi), Italy
| | - Giuliano Giambastiani
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France, and Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (Fi), Italy
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France, and Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (Fi), Italy
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Jie S, Pattacini R, Rogez G, Loose C, Kortus J, Braunstein P. Synthesis, structure, magnetic and catalytic properties of new dinuclear chromium(III) complexes with oxazoline alcoholate ligands. Dalton Trans 2009:97-105. [PMID: 19081976 DOI: 10.1039/b809814j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dinuclear chromium complexes [Cr(2)(N,O)(3)Cl(3)] (6) (N,O = 4,4-dimethyl-2-oxazolylmethanolate), [Cr(2)(N,O(Me2))(2)(EtOH)(2)Cl(4)] (7) and [Cr(2)(N,O(Me2))(2)(H(2)O)(2)Cl(4)] (8) (N,O(Me2) = 4,4-dimethyl-2-oxazolyldimethylmethanolate) have been prepared and characterized, including by single-crystal X-ray diffraction. Complex 6 is unsymmetrical, with two chloride ligands terminally bound to one Cr atom, whereas 7 and 8 (in 8 x C(4)H(8)O) which contain two molecules of coordinated ethanol or water, respectively, are centrosymmetric. These chromium complexes are paramagnetic, and the magnetic properties of 6 and 7 in the solid state correspond to antiferromagnetic behaviour, which was confirmed by DFT calculations of their electronic structures. Complexes 6-8 were evaluated in the catalytic oligomerization and/or polymerization of ethylene with different aluminium-based cocatalysts, and MMAO proved to be the most effective one. In the presence of MMAO, the influence of different reaction parameters, such as the Al/Cr molar ratio, reaction temperature and ethylene pressure, was investigated. Complex 7 showed the highest activity for ethylene polymerization at both 1 atm and 10 atm of ethylene pressure, up to 620 000 g mol(-1)(Cr) h(-1) in the latter case.
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Affiliation(s)
- Suyun Jie
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070, Strasbourg Cedex, France
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23
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Pattacini R, Jie S, Braunstein P. Facile dichloromethane activation and phosphine methylation. Isolation of unprecedented zwitterionic organozinc and organocobalt intermediates. Chem Commun (Camb) 2009:890-2. [DOI: 10.1039/b817728g] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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24
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Basu C, Biswas S, Chattopadhyay AP, Stoeckli-Evans H, Mukherjee S. Sulfate-Bridged Dimeric Copper(II) Complexes with Three-Dimensional Network: Synthesis, Structure and DFT Studies. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800512] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Pattacini R, Margraf G, Messaoudi A, Oberbeckmann-Winter N, Braunstein P. Formation of P−C Bonds under Unexpectedly Mild Conditions. Phosphoryl Migration and Metal Coordination of Diphenylphosphinomethyl-oxazolines and -thiazolines. Inorg Chem 2008; 47:9886-97. [DOI: 10.1021/ic800934h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roberto Pattacini
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cedex, France, Fax:
| | - Günter Margraf
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cedex, France, Fax:
| | - Abdelatif Messaoudi
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cedex, France, Fax:
| | - Nicola Oberbeckmann-Winter
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cedex, France, Fax:
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cedex, France, Fax:
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Zhang J, Braunstein P, Hor TSA. Highly Selective Chromium(III) Ethylene Trimerization Catalysts with [NON] and [NSN] Heteroscorpionate Ligands. Organometallics 2008. [DOI: 10.1021/om8005239] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun Zhang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Kent Ridge, Singapore, and Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France
| | - Pierre Braunstein
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Kent Ridge, Singapore, and Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France
| | - T. S. Andy Hor
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Kent Ridge, Singapore, and Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France
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