1
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Gunther SO, Lai Q, Senecal T, Huacuja R, Bremer S, Pearson DM, DeMott JC, Bhuvanesh N, Ozerov OV, Klosin J. Highly Efficient Carborane-Based Activators for Molecular Olefin Polymerization Catalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04228] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Olivia Gunther
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Qingheng Lai
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Todd Senecal
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Rafael Huacuja
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Sean Bremer
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - David M. Pearson
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Jessica C. DeMott
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
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2
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Ohta S, Takahashi S, Takenaka A, Akazawa Y, Miyamoto R, Okazaki M. Synthesis, Structures, and Solution Dynamics of Titanium and Zirconium Complexes Carrying a Bis(indolyl) and Two Diethylamido Ligands. Inorg Chem 2019; 58:15520-15528. [PMID: 31664824 DOI: 10.1021/acs.inorgchem.9b02566] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Indolyl is the anionic species obtained from the deprotonation of the N-H group of indole. Group 4 transition-metal complexes that carry indolyl-based polydentate ligands represent promising homogeneous catalysts for, e.g., olefin polymerization, hydroamination, and nitrogen-fixation reactions due to the weak π-donation and electron-withdrawing properties, as well as the low basicity of indolyl. In this study, we systematically investigated the synthesis and structures of titanium and zirconium complexes that carry deprotonated 2,2'-bis(indolyl)methane ligands (henceforth: bis(indolyl) ligands) and two diethylamido ligands. We found that the coordination geometry of the indolyl nitrogen atom in such bis(indolyl) ligands is affected by the steric impact of the substituents attached to the central aromatic ring. Moreover, we examined the dynamics of such bis(indolyl) ligands in solution for the corresponding zirconium complexes, and the mechanism was discussed in conjunction with DFT calculations. The results of this study suggest that bis(indolyl) ligands may also serve as coordinatively flexible ancillary ligands, and indicate the feasibility of an expansion from bis(indolyl) to bis(indolyl)-donor ligands.
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Affiliation(s)
- Shun Ohta
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Shiona Takahashi
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Amon Takenaka
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Yuta Akazawa
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Ryo Miyamoto
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Masaaki Okazaki
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
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3
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Zhang C, Pan H, Klosin J, Tu S, Jaganathan A, Fontaine PP. Synthetic Optimization and Scale-Up of Imino–Amido Hafnium and Zirconium Olefin Polymerization Catalysts. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chunming Zhang
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Heqi Pan
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Siyu Tu
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Arvind Jaganathan
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Philip P. Fontaine
- Performance Plastics R&D, The Dow Chemical Company, Freeport, Texas 77541, United States
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4
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β-diiminato titanium complexes with varying fluorine substitution patterns on the N-aryl moiety: probing the effect of ligand substitution on ethylene polymerization. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0631-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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5
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Filimon SA, Petrovic D, Volbeda J, Bannenberg T, Jones PG, Freiherr von Richthofen CG, Glaser T, Tamm M. 3d Metal Complexes Supported by a Bis(imidazolin-2-imino)pyridine Pincer Ligand - Synthesis, Structural Characterisation, and Magnetic Properties. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402804] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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6
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7
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Klosin J, Fontaine PP, Figueroa R, McCann SD, Mort D. Preparation of New Olefin Polymerization Precatalysts by Facile Derivatization of Imino–Enamido ZrMe3 and HfMe3 Complexes. Organometallics 2013. [DOI: 10.1021/om4008339] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Philip P. Fontaine
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Ruth Figueroa
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Scott D. McCann
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Darrek Mort
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
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8
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Hayatifar M, Pampaloni G, Bernazzani L, Capacchione C, Kissin YV, Raspolli Galletti AM. A new post-metallocene catalyst for alkene polymerization: copolymerization of ethylene and 1-hexene with titanium complexes bearing N,N
-dialkylcarbamato ligands. POLYM INT 2013. [DOI: 10.1002/pi.4558] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mohammad Hayatifar
- Department of Chemistry and Industrial Chemistry; University of Pisa; via Risorgimento 35 56126 Pisa Italy
| | - Guido Pampaloni
- Department of Chemistry and Industrial Chemistry; University of Pisa; via Risorgimento 35 56126 Pisa Italy
| | - Luca Bernazzani
- Department of Chemistry and Industrial Chemistry; University of Pisa; via Risorgimento 35 56126 Pisa Italy
| | - Carmine Capacchione
- Department of Chemistry; University of Salerno; via Ponte don Melillo, Fisciano 84084 Salerno Italy
| | - Yury V. Kissin
- Department of Chemistry and Chemical Biology, Rutgers; State University of New Jersey; 610 Taylor Rd Piscataway NJ 08854-8087 USA
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9
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Fontaine PP, Figueroa R, McCann SD, Mort D, Klosin J. Synthesis and Scale-up of Imino–Enamido Hafnium and Zirconium Olefin Polymerization Catalysts. Organometallics 2013. [DOI: 10.1021/om400189w] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Philip P. Fontaine
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Ruth Figueroa
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Scott D. McCann
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Darrek Mort
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
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10
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Campos JM, Lourenço JP, Cramail H, Ribeiro MR. Nanostructured silica materials in olefin polymerisation: From catalytic behaviour to polymer characteristics. Prog Polym Sci 2012. [DOI: 10.1016/j.progpolymsci.2012.02.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Caporaso L, Loria M, Mazzeo M, Michiue K, Nakano T, Fujita T, Cavallo L. Mechanism of Isotactic Styrene Polymerization with a C6F5-Substituted Bis(phenoxyimine) Titanium System. Macromolecules 2012. [DOI: 10.1021/ma301631b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lucia Caporaso
- Department of Chemistry and
Biology, University of Salerno, Via Ponte
Don Melillo, 84084 Fisciano, Salerno, Italy
| | - Marianna Loria
- Department of Chemistry and
Biology, University of Salerno, Via Ponte
Don Melillo, 84084 Fisciano, Salerno, Italy
| | - Mina Mazzeo
- Department of Chemistry and
Biology, University of Salerno, Via Ponte
Don Melillo, 84084 Fisciano, Salerno, Italy
| | - Kenji Michiue
- Catalysis Science Laboratory,
Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura-City Chiba 299-0265, Japan
| | - Takashi Nakano
- Material Science Laboratory, Research
Center, Mitsui Chemicals, Inc., 580-32
Nagaura, Sodegaura-City Chiba 299-0265, Japan
| | - Terunori Fujita
- Mitsui Chemicals Singapore R&D Center Pte. Ltd., 50 Science Park Road, #06-08 The Kendall, Singapore Science Park II Singapore 117406
| | - Luigi Cavallo
- King Abdullah University of
Science and Technology, Physical Sciences and Engineering, Kaust Catalysis Center, Thuwal 23955-6900, Saudi Arabia
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12
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Fontaine PP, Klosin J, McDougal NT. Hafnium Amidoquinoline Complexes: Highly Active Olefin Polymerization Catalysts with Ultrahigh Molecular Weight Capacity. Organometallics 2012. [DOI: 10.1021/om3005417] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Philip P. Fontaine
- Performance Plastics R&D, The Dow Chemical Company, Freeport, Texas 77541, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Nolan T. McDougal
- Corporate R&D, The Dow Chemical Company, Freeport, Texas 77541, United States
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13
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Hsu JW, Lin YC, Hsiao CS, Datta A, Lin CH, Huang JH, Tsai JC, Hsu WC. Zirconium complexes incorporated with asymmetrical tridentate pincer type mono- and di-anionic pyrrolyl ligands: mechanism and reactivity as catalytic precursors. Dalton Trans 2012; 41:7700-7. [PMID: 22622350 DOI: 10.1039/c2dt30417a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of Zr(NR(2))(4) (1, R = Me; 2, R = Et) with an asymmetrical tridentate pincer type pyrrole ligand precursor [C(4)H(2)NH(2-CH(2)NH(t)Bu)(5-CH(2)NMe(2))] and treatment of the derivatives with either PhNCS or PhNCO have been carried out and characterized. Reacting Zr(NR(2))(4) (1, R = Me; 2, R = Et) with [C(4)H(2)NH(2-CH(2)NH(t)Bu)(5-CH(2)NMe(2))] generates Zr[C(4)H(2)N(2-CH(2)N(t)Bu)(5-CH(2)NMe(2))](NR(2))(2) (3, R = Me; 4, R = Et) in high yield along with the elimination of 2 equiv of dimethylamine or diethylamine, respectively. Interestingly, while changing the solvent from Et(2)O to CH(2)Cl(2), the complex Zr[C(4)H(2)N(2-CH(2)N(t)Bu)(5-CH(2)NMe(2))][C(4)H(2)N(2-CH(2)NH(t)Bu)(5-CH(2)NMe(2))]Cl (5) is produced by undergoing C-Cl bond cleavage. Furthermore, reaction of either 3 or 4 with 1 or 2 equiv of PhNCS or PhNCO yields Zr[C(4)H(2)N(2-CH(2)N(t)Bu)(5-CH(2)NMe(2))](NMe(2))[PhNC(NMe(2))S] (6), Zr[C(4)H(2)N(2-CH(2)N(t)Bu)(5-CH(2)NMe(2))](NEt(2))[PhNC(NEt(2))O] (7) and Zr[C(4)H(2)N(2-CH(2)NH(t)Bu)(5-CH(2)NMe(2))][PhNC(NEt(2))O](3) (8), respectively. All the aforementioned complexes were characterized by (1)H and (13)C NMR spectrometry and the molecular structures of 5, 6, and 8 have been determined by single-crystal X-ray diffractometry. Complexes 4, 5, and 7 initiated the ethylene polymerization in the presence of MAO as the co-catalyst.
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Affiliation(s)
- Jia-Wei Hsu
- Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan
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14
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Badaj AC, Lavoie GG. Synthesis and Structural Characterization of Nickel(II) Complexes with Imino-N-heterocyclic Carbene Heteroditopic Ligands. Organometallics 2012. [DOI: 10.1021/om2011485] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anna C. Badaj
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3
| | - Gino G. Lavoie
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3
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15
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Kang X, Song Y, Luo Y, Li G, Hou Z, Qu J. Computational Studies on Isospecific Polymerization of 1-Hexene Catalyzed by Cationic Rare Earth Metal Alkyl Complex Bearing a C3iPr-trisox Ligand. Macromolecules 2012. [DOI: 10.1021/ma202414k] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaohui Kang
- State Key Laboratory of Fine Chemicals, School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yuming Song
- State Key Laboratory of Fine Chemicals, School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Gang Li
- School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhaomin Hou
- State Key Laboratory of Fine Chemicals, School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
- Organometallic Chemistry Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako,
Saitama 351-0198, Japan
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
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16
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Hayes CE, Leznoff DB. Paramagnetic metal complexes of diamido donor ligands. Dalton Trans 2012; 41:5743-53. [DOI: 10.1039/c1dt11559f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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So LC, Liu CC, Chan MCW, Lo JCY, Sze KH, Zhu N. Scalar coupling across [C-H···F-C] interactions in (σ-aryl)-chelating post-metallocenes. Chemistry 2011; 18:565-73. [PMID: 22161818 DOI: 10.1002/chem.201102439] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Indexed: 11/07/2022]
Abstract
The nature and importance of C-H···F-C interactions is a topical yet controversial issue, and the development of spectroscopic methods to probe such contacts is therefore warranted. A series of Group 4 bis(benzyl) complexes supported by (σ-aryl)-2-phenolate-6-pyridyl [O,C,N-R(1)] ligands bearing a fluorinated R(1) group (CF(3) or F) in the vicinity of the metal has been prepared. The X-ray crystal structure of the CF(3)-substituted Hf derivative features intramolecular C-H···F-C and Hf···F-C contacts. All complexes have been characterized by multinuclear NMR spectroscopy. The (1)H and (13)C NMR spectra of [M(O,C,N-CF(3))(CH(2)Ph)(2)] derivatives display coupling (assigned to (1h)J(HF) and (2h)J(CF) for Ti; (3)J(HF) and (2)J(CF) (through M···F) for Hf and Zr) between the benzyl CH(2) and CF(3) moieties. [(1)H,(19)F]-HMBC NMR experiments have been performed for the M-[O,C,N-R(1)] complexes and their [O,N,C] counterparts, revealing significant scalar coupling across the C-H···F-C interactions for Ti-[O,C,N] and [O,N,C] species.
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Affiliation(s)
- Loi-Chi So
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, PR China
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18
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Lee WY, Hsieh CC, Hsu JW, Datta A, Lin YC, Huang JH, Lee TY. Zirconium and hafnium amide, alkoxide, and pyrrolyl complexes manifesting with pyrrolyl-linked N-donor ligands: Syntheses, characterization, and ring opening polymerization of ε-caprolactone. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Szuromi E, Klosin J, Abboud KA. Aminotroponiminato Hafnium and Zirconium Complexes: Synthesis and Ethylene/1-Octene Copolymerization Study. Organometallics 2011. [DOI: 10.1021/om200362v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Endre Szuromi
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Khalil A. Abboud
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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20
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Iron(II) and cobalt(II) complexes bearing 8-(1-aryliminoethylidene) quinaldines: Synthesis, characterization and ethylene dimerization behavior. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.03.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Frazier KA, Froese RD, He Y, Klosin J, Theriault CN, Vosejpka PC, Zhou Z, Abboud KA. Pyridylamido Hafnium and Zirconium Complexes: Synthesis, Dynamic Behavior, and Ethylene/1-Octene and Propylene Polymerization Reactions. Organometallics 2011. [DOI: 10.1021/om200167h] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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22
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Appukuttan VK, Liu Y, Son BC, Ha CS, Suh H, Kim I. Iron and Cobalt Complexes of 2,3,7,8-Tetrahydroacridine-4,5(1H,6H)-diimine Sterically Modulated by Substituted Aryl Rings for the Selective Oligomerization to Polymerization of Ethylene. Organometallics 2011. [DOI: 10.1021/om2000629] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vinu Krishnan Appukuttan
- The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
| | - Yinshan Liu
- The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
| | - Bong Chul Son
- The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
| | - Chang-Sik Ha
- The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
| | - Hongsuk Suh
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Pusan 609-735, Korea
| | - Il Kim
- The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
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23
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Figueroa R, Froese RD, He Y, Klosin J, Theriault CN, Abboud KA. Synthesis of Imino-Enamido Hafnium and Zirconium Complexes: A New Family of Olefin Polymerization Catalysts with Ultrahigh-Molecular-Weight Capabilities. Organometallics 2011. [DOI: 10.1021/om101207a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ruth Figueroa
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Robert D. Froese
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Yiyong He
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Curt N. Theriault
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Khalil A. Abboud
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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24
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Krasuska A, Białek M, Czaja K. Ethylene polymerization with FI complexes having novel phenoxy-imine ligands: Effect of metal type and complex immobilization. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24589] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Larocque TG, Badaj AC, Dastgir S, Lavoie GG. New stable aryl-substituted acyclic imino-N-heterocyclic carbene: synthesis, characterisation and coordination to early transition metals. Dalton Trans 2011; 40:12705-12. [DOI: 10.1039/c1dt11565k] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Zhang L, Gao W, Tao X, Wu Q, Mu Y, Ye L. New Chromium(III) Complexes with Imine−Cyclopentadienyl Ligands: Synthesis, Characterization, and Catalytic Properties for Ethylene Polymerization. Organometallics 2010. [DOI: 10.1021/om1005935] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Lei Zhang
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Wei Gao
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Xin Tao
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Qiaolin Wu
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Ying Mu
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Ling Ye
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
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27
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Froese RDJ, Jazdzewski BA, Klosin J, Kuhlman RL, Theriault CN, Welsh DM, Abboud KA. Imino-Amido Hf and Zr Complexes: Synthesis, Isomerization, and Olefin Polymerization. Organometallics 2010. [DOI: 10.1021/om1008742] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Robert D. J. Froese
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Brian A. Jazdzewski
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Roger L. Kuhlman
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Curt N. Theriault
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Dean M. Welsh
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Khalil A. Abboud
- Department of Chemistry, University of Florida, Gainesville,
Florida 32611, United States
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28
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Takeuchi D. Recent progress in olefinpolymerization catalyzed by transition metal complexes: new catalysts and new reactions. Dalton Trans 2010:311-28. [DOI: 10.1039/b911992b] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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29
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Hu M, Wang M, Zhu H, Zhang L, Zhang H, Sun L. Preparation and structures of enantiomeric dinuclear zirconium and hafnium complexes containing two homochiral N atoms, and their catalytic property for polymerization of rac-lactide. Dalton Trans 2010; 39:4440-6. [DOI: 10.1039/c001148g] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Litlabø R, Lee HS, Niemeyer M, Törnroos KW, Anwander R. Rare-earth metal bis(tetramethylaluminate) complexes supported by a sterically crowded triazenido ligand. Dalton Trans 2010; 39:6815-25. [DOI: 10.1039/b925837j] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Lien YL, Chang YC, Chuang NT, Datta A, Chen SJ, Hu CH, Huang WY, Lin CH, Huang JH. A New Type of Asymmetric Tridentate Pyrrolyl-Linked Pincer Ligand and Its Aluminum Dihydride Complexes. Inorg Chem 2009; 49:136-43. [PMID: 19950963 DOI: 10.1021/ic9016189] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yu-Ling Lien
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 500
| | - Ya-Chi Chang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 500
| | - Nien-Tsu Chuang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 500
| | - Amitabha Datta
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 500
| | - Shau-Jiun Chen
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 500
| | - Ching-Han Hu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 500
| | - Wen-Yen Huang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 500
| | - Chia-Her Lin
- Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Tau Yan, Taiwan
| | - Jui-Hsien Huang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 500
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32
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33
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Lee JD, Kim TJ, Han WS, Han SJ, Lee C, Ko J, Kang SO. C2-Symmetric Group 4 Metal Complexes Adorned with Chiral N,O Chelates: Synthesis and Structural Characterization of Helical Hexacoordinate Metal Dichlorides Derived from 6-Isopropyl-3-methyl-2-(4-isopropyl-4,5-dihydrooxazol-2-yl)phenol Ligands. Z Anorg Allg Chem 2009. [DOI: 10.1002/zaac.200801385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Xiao L, Gao R, Zhang M, Li Y, Cao X, Sun WH. 2-(1H-2-Benzimidazolyl)-6-(1-(arylimino)ethyl)pyridyl Iron(II) and Cobalt(II) Dichlorides: Syntheses, Characterizations, and Catalytic Behaviors toward Ethylene Reactivity. Organometallics 2009. [DOI: 10.1021/om801141n] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liwei Xiao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China, and Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Rong Gao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China, and Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Min Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China, and Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Yan Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China, and Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Xiaoping Cao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China, and Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Wen-Hua Sun
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China, and Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
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35
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Ward BD, Lukešová L, Wadepohl H, Bellemin-Laponnaz S, Gade LH. Scandium-Catalyzed Polymerization of CH3(CH2)nCH=CH2(n= 0-4): Remarkable Activity and Tacticity Control. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200801106] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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37
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Huang C, Hsueh L, Kuo P, Lee HM, Uno C, Huang J, Tu C, Hu C, Lee G, Hung C. Aluminum Complexes Containing Cyclohexane‐1,2‐diyl Linked Bis(ketiminato) Ligands and Proton‐Promoted Demethylation. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Kim SK, Kim HK, Lee MH, Yoon SW, Do Y. Novel Synthetic Strategy for Developing an Isospecific Unbridged Metallocene System for Propylene Polymerization. Chemistry 2007; 13:9107-14. [PMID: 17676573 DOI: 10.1002/chem.200700512] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
New unbridged zirconocenes functionalized with a Lewis base, [{1-(E-C(6)H(4))-3,4-Me(2)C(5)H(2)}(2)ZrCl(2)] (E = p-NMe(2) (3); p-OMe (4); p-SMe (5)) were prepared and their propylene polymerization behavior was examined. Under methylaluminoxane (MAO) activation at atmospheric monomer pressure, these complexes afford mixtures of polymers exhibiting multimelting transition temperatures and broad molecular weight distribution, whereas they produce completely atactic polypropylenes under [Ph(3)C][B(C(6)F(5))(4)] activation. Stepwise solvent extraction of the polymer mixtures reveals that the polymers consist of amorphous, moderately isotactic, as well as, highly isotactic portions and the weight ratio of each portion is dependent upon reaction temperature. The generation of rigid rac-like cationic active species in situ by the interaction between basic sites of catalysts and acidic sites of the [Me-MAO](-) counter anion is considered to be the origin of the observed isospecificity. Further investigation of bulk polymerization in liquid propylene shows not only a considerable increase of the isotactic portion of the obtained polypropylenes but also apparent isospecificity of 4 and 5/MAO systems even at high temperature. Variation of the Lewis basic center leads to a dramatic change in stereoselectivity of the catalyst in the decreasing order of 3>4>>5, in spite of their structural similarity.
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Affiliation(s)
- Seong Kyun Kim
- Department of Chemistry, School of Molecular Science BK-21, Center for Molecular Design and Synthesis, Polyolefin Materials Research Center, College of Natural Science, Korea Advanced Institute of Science and Technology, Daejeon, Korea
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39
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De Waele P, Jazdzewski BA, Klosin J, Murray RE, Theriault CN, Vosejpka PC, Petersen JL. Synthesis of Hafnium and Zirconium Imino−Amido Complexes from Bis-imine Ligands. A New Family of Olefin Polymerization Catalysts. Organometallics 2007. [DOI: 10.1021/om7004723] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philip De Waele
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674
| | - Brian A. Jazdzewski
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674
| | - Rex E. Murray
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674
| | - Curt N. Theriault
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674
| | - Paul C. Vosejpka
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674
| | - Jeffrey L. Petersen
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506-6045
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40
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Wang L, Zhang C, Wang ZX. Synthesis and Characterization of Iron, Cobalt, and Nickel Complexes Bearing NovelN,N-Chelate Ligands and Their Catalytic Properties in Ethylene Oligomerization. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Gibson VC, Redshaw C, Solan GA. Bis(imino)pyridines: Surprisingly Reactive Ligands and a Gateway to New Families of Catalysts. Chem Rev 2007; 107:1745-76. [PMID: 17488059 DOI: 10.1021/cr068437y] [Citation(s) in RCA: 671] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vernon C Gibson
- Department of Chemistry, Imperial College, South Kensington Campus, London, SW7 2AZ, United Kingdom.
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42
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Synthesis, characterization, and ethylene polymerizations of various N–O chelated mono Cp∗ titanium complexes. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.12.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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Kim SK, Kim HK, Lee MH, Yoon SW, Han Y, Park S, Lee J, Do Y. Dinuclear Metallocenes with a Modulated Biphenylene Bridge for Olefin Polymerization. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200600833] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Seong Kyun Kim
- Department of Chemistry, School of Molecular Science BK‐21, Center for Molecular Design and Synthesis, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea, Fax: +82‐42‐869‐2810
| | - Hwa Kyu Kim
- Department of Chemistry, School of Molecular Science BK‐21, Center for Molecular Design and Synthesis, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea, Fax: +82‐42‐869‐2810
| | - Min Hyung Lee
- Department of Chemistry, School of Molecular Science BK‐21, Center for Molecular Design and Synthesis, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea, Fax: +82‐42‐869‐2810
- Current address: Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - Seung Woong Yoon
- Department of Chemistry, School of Molecular Science BK‐21, Center for Molecular Design and Synthesis, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea, Fax: +82‐42‐869‐2810
| | - Yonggyu Han
- Department of Chemistry, School of Molecular Science BK‐21, Center for Molecular Design and Synthesis, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea, Fax: +82‐42‐869‐2810
| | - Sungjin Park
- Department of Chemistry, School of Molecular Science BK‐21, Center for Molecular Design and Synthesis, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea, Fax: +82‐42‐869‐2810
| | - Junseong Lee
- Department of Chemistry, School of Molecular Science BK‐21, Center for Molecular Design and Synthesis, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea, Fax: +82‐42‐869‐2810
| | - Youngkyu Do
- Department of Chemistry, School of Molecular Science BK‐21, Center for Molecular Design and Synthesis, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea, Fax: +82‐42‐869‐2810
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44
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Tamm M, Kunst A, Stadler M, Herdtweck E. Efficient Direct Synthesis of Tropidinyl Titanium and Zirconium Complexes by Allylic CH-Activation of 8-Methyl-8-azabicyclo[3.2.1]oct-2-ene (Tropidine). Organometallics 2007. [DOI: 10.1021/om0609564] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, D-38106 Braunschweig, Germany, and Lehrstuhl für Anorganische Chemie, Department Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
| | - Andreas Kunst
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, D-38106 Braunschweig, Germany, and Lehrstuhl für Anorganische Chemie, Department Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
| | - Michael Stadler
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, D-38106 Braunschweig, Germany, and Lehrstuhl für Anorganische Chemie, Department Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
| | - Eberhardt Herdtweck
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, D-38106 Braunschweig, Germany, and Lehrstuhl für Anorganische Chemie, Department Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
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45
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Petrovic D, Bannenberg T, Randoll S, Jones PG, Tamm M. Synthesis and reactivity of copper(i) complexes containing a bis(imidazolin-2-imine) pincer ligand. Dalton Trans 2007:2812-22. [PMID: 17592598 DOI: 10.1039/b703183a] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The new pincer ligand 2,6-bis[(1,3-di-tert-butylimidazolin-2-imino)methyl]pyridine (TL(tBu)) has been prepared in high yield from 2,6-bis(hydroxymethyl)pyridine (1) and 1,3-di-tert-butylimidazolin-2-imine (3). Reaction of TL(tBu) with [Cu(MeCN)4]PF6 affords the highly reactive copper(I) complex [(TL(tBu))Cu]PF6, [5]PF6, which forms the stable copper(I) isocyanide complexes [6a]PF6 (nu(CN) = 2179 cm(-1)) and [6b]PF6 (nu(CN) = 2140 cm(-1)) upon addition of tert-butyl or 2,6-dimethylphenyl isocyanide, respectively. For the cations 6a and 6b, DFT calculations reveal ground-state electronic structures of the type [(TL(tBu)-kappaN(1):kappaN(2))Cu(CNR)] with tricoordinate geometries around the copper atoms. Exposure of [5]PF6 to the air readily leads to trapping of atmospheric CO2 to form the square-planar complex [(TL(tBu))Cu(HCO3-kappaO)]PF6, [7]PF6, with the bicarbonate ligand adopting a rarely observed monodentate coordination mode. In chlorinated solvents such as dichloromethane or chloroform, [5]PF(6) rapidly abstracts chloride by reductive dechlorination of the solvent to yield [(TL(tBu))CuCl]PF6, [8]PF6 quantitatively. Reaction of TL(tBu) with copper(I) bromide or chloride affords complexes 9a and 9b, respectively, for which X-ray diffraction analysis, low-temperature NMR experiments and DFT calculations reveal the presence of a kappa(2)-coordinated ligand of the type [(TL(tBu)-kappaN(1):kappaN(2))CuX]. In solution, complex 9b undergoes slow disproportionation forming the mixed-valence copper(II)/copper(I) system [(TL(tBu))CuCl][CuCl2], [8]CuCl2 with a linear dichlorocuprate(I) counterion.
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Affiliation(s)
- Dejan Petrovic
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina zu Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
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46
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Synthesis, structure and catalytic activity of phosphine-substituted zirconium salicylaldiminato complexes. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.10.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Pennington DA, Harrington RW, Clegg W, Bochmann M, Lancaster SJ. The synthesis, structure and ethene polymerization activity of octahedral heteroligated (salicylaldiminato)(β-enaminoketonato)titanium complexes: The X-ray crystal structure of {3-But-2-(O)C6H3CHN(Ph)}{(Ph)NC(Me)C(H)C(Me)O}TiCl2. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.03.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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48
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Bieller S, Bolte M, Lerner HW, Wagner M. Modular Approach to Tridentate N,O,N′ Ligands Using Pyrazolylborate Chemistry. Chemistry 2006; 12:4735-42. [PMID: 16710866 DOI: 10.1002/chem.200600142] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Two anionic tridentate N,O,N' chelators, [pz(Ph)B(mu-pz)(mu-O)B(Ph)pz](-) (3(-)) and [pz(Ph)(Ph)B(mu-pz)(mu-O)B(Ph)pz(Ph)](-) (4(-)), as well as the corresponding complexes [Fe(3)(py)Cl], [Fe(3)Cl(2)] and [Cu(3)Cl], have been synthesised and structurally characterised by X-ray crystallography (pz: pyrazolyl, pz(Ph): 3-phenylpyrazolyl, py: pyridine). Since our synthesis approach takes advantage of the highly modular pyrazolylborate chemistry, inexpensive and relatively resistant N,O,N' ligands of varying steric demand are readily accessible. The complexes [Fe(3)(py)Cl] and [Fe(3)Cl(2)] possess a distorted trigonal-bipyramidal configuration with the pyrazolyl rings occupying equatorial positions and the oxygen donor being located at an apical position. The complex [Cu(3)Cl] crystallises as chloro-bridged dimers featuring Cu(II) ions with ligand environments that are intermediate between a square-planar and a trigonal-bipyramidal geometry.
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Affiliation(s)
- Susanne Bieller
- Institut für Anorganische Chemie, Johann Wolfgang Goethe-Universität Frankfurt am Main, Max-von-Laue-Strasse 7, 60438 Frankfurt, Germany
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49
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Ethylene oligomerization, homopolymerization and copolymerization by iron and cobalt catalysts with 2,6-(bis-organylimino)pyridyl ligands. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2005.12.018] [Citation(s) in RCA: 317] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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50
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Vijayakrishna K, Sundararajan G. Titanium precatalysts bearing N-substituted β-amino alcohols for 1-hexene polymerization: The effect of steric crowding. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.03.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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