1
|
Tensi L, Moretti F, Amendola A, Froese RDJ, Macchioni A, Kuhlman RL, Pearson DM, Zuccaccia C. Solution Structure and Dynamics of Hf-Al and Hf-Zn Heterobimetallic Adducts Mimicking Relevant Intermediates in Chain Transfer Reactions. Inorg Chem 2024; 63:8222-8236. [PMID: 38666625 DOI: 10.1021/acs.inorgchem.4c00476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
Cationic cyclometalated hafnocenes [CpPrCpCH2CH2CH2Hf][B(C6F5)4] (4Pr) and [CpiBuCpCH2CH(Me)CH2Hf][B(C6F5)4] (4aiBu and 4biBu) were synthesized from the corresponding [(CpPr)2HfMe][B(C6F5)4] (1Pr) and [(CpiBu)2HfMe][B(C6F5)4] (1iBu) complexes via C-H activation. 4aiBu, 4biBu, and 4Pr, mimicking a propagating M-polymeryl species (M = transition metal) with or without a β-methyl branch on the metalated chains, serve to investigate whether and how the nature of the last inserted olefin molecules changes the structure, stability, and reactivity of the corresponding heterobimetallic complexes, formed in the presence of aluminum- or zinc-alkyl chain transfer agents (CTAs), which are considered relevant intermediates in coordinative chain transfer polymerization (CCTP) and chain shuttling polymerization (CSP) technologies. NMR and DFT data indicate no major structural difference between the resulting heterobridged complexes, all characterized by the presence of multiple α-agostic interactions. On the contrary, thermodynamic and kinetic investigations, concerning the reversible formation and breaking of heterobimetallic adducts, demonstrate that isomer 4aiBu, in which the β-Me is oriented away from the reactive coordination site on Hf, but not 4biBu, having the β-Me pointing in the opposite direction, is capable of reacting with CTAs. Quantification of kinetic rate constants highlights that the formation process is rate limiting and that the nature of the last inserted α-olefin unit modulates transalkylation kinetics. The reaction of 4aiBu, 4biBu, and 4Pr with diisobutylaluminum hydride (DiBAlH) allows the interception and characterization of new heterobinuclear and heterotrinuclear species, featuring both hydride and alkyl bridging moieties, which represent structural models of elusive intermediates in CCTP and CSP processes, capturing the instant when an alkyl chain has just transferred from a transition metal to a main group metal, while the two metals remain engaged in a single heterobimetallic intermediate.
Collapse
Affiliation(s)
- Leonardo Tensi
- Department of Pharmaceutical Sciences, University of Perugia and CIRCC, Via del Liceo 1, 06123 Perugia, Italy
| | - Francesca Moretti
- Department of Chemistry, Biology and Biotechnology and CIRCC, University of Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Alessandra Amendola
- Department of Chemistry, Biology and Biotechnology and CIRCC, University of Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Robert D J Froese
- Core R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Alceo Macchioni
- Department of Chemistry, Biology and Biotechnology and CIRCC, University of Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Roger L Kuhlman
- The Dow Chemical Company, 230 Abner Jackson Parkway Herbert H Dow Building #2B104, Lake Jackson, Texas 77566, United States
| | - David M Pearson
- The Dow Chemical Company, 230 Abner Jackson Parkway Herbert H Dow Building #2B104, Lake Jackson, Texas 77566, United States
| | - Cristiano Zuccaccia
- Department of Chemistry, Biology and Biotechnology and CIRCC, University of Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
| |
Collapse
|
2
|
Chemical Transformations in Heterobimetallic Complexes Facilitated by the Second Coordination Sphere. TOP ORGANOMETAL CHEM 2023. [DOI: 10.1007/3418_2022_79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
3
|
Transition Metal-(μ-Cl)-Aluminum Bonding in α-Olefin and Diene Chemistry. Molecules 2022; 27:molecules27217164. [PMID: 36363991 PMCID: PMC9654437 DOI: 10.3390/molecules27217164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Abstract
Olefin and diene transformations, catalyzed by organoaluminum-activated metal complexes, are widely used in synthetic organic chemistry and form the basis of major petrochemical processes. However, the role of M−(μ-Cl)−Al bonding, being proven for certain >C=C< functionalization reactions, remains unclear and debated for essentially more important industrial processes such as oligomerization and polymerization of α-olefins and conjugated dienes. Numerous publications indirectly point at the significance of M−(μ-Cl)−Al bonding in Ziegler−Natta and related transformations, but only a few studies contain experimental or at least theoretical evidence of the involvement of M−(μ-Cl)−Al species into catalytic cycles. In the present review, we have compiled data on the formation of M−(μ-Cl)−Al complexes (M = Ti, Zr, V, Cr, Ni), their molecular structure, and reactivity towards olefins and dienes. The possible role of similar complexes in the functionalization, oligomerization and polymerization of α-olefins and dienes is discussed in the present review through the prism of the further development of Ziegler−Natta processes and beyond.
Collapse
|
4
|
Charles RM, Brewster TP. H 2 and carbon-heteroatom bond activation mediated by polarized heterobimetallic complexes. Coord Chem Rev 2021; 433:213765. [PMID: 35418712 PMCID: PMC9004596 DOI: 10.1016/j.ccr.2020.213765] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The field of heterobimetallic chemistry has rapidly expanded over the last decade. In addition to their interesting structural features, heterobimetallic structures have been found to facilitate a range of stoichiometric bond activations and catalytic processes. The accompanying review summarizes advances in this area since January of 2010. The review encompasses well-characterized heterobimetallic complexes, with a particular focus on mechanistic details surrounding their reactivity applications.
Collapse
Affiliation(s)
- R Malcolm Charles
- Department of Chemistry, The University of Memphis, 3744 Walker Ave., Smith Chemistry Building, Memphis, TN 38152, United States
| | - Timothy P Brewster
- Department of Chemistry, The University of Memphis, 3744 Walker Ave., Smith Chemistry Building, Memphis, TN 38152, United States
| |
Collapse
|
5
|
Antonov AA, Bryliakov KP. Post-metallocene catalysts for the synthesis of ultrahigh molecular weight polyethylene: Recent advances. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110162] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
6
|
Tensi L, Froese RDJ, Kuhlman RL, Macchioni A, Zuccaccia C. Interception of Elusive Cationic Hf–Al and Hf–Zn Heterobimetallic Adducts with Mixed Alkyl Bridges Featuring Multiple Agostic Interactions. Chemistry 2020; 26:3758-3766. [DOI: 10.1002/chem.201905699] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/14/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Leonardo Tensi
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCCUniversità degli Studi di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| | | | | | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCCUniversità degli Studi di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCCUniversità degli Studi di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| |
Collapse
|
7
|
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.
Collapse
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
| |
Collapse
|
8
|
Sampson J, Choi G, Akhtar MN, Jaseer E, Theravalappil R, Garcia N, Agapie T. Early Metal Di(pyridyl) Pyrrolide Complexes with Second Coordination Sphere Arene-π Interactions: Ligand Binding and Ethylene Polymerization. ACS OMEGA 2019; 4:15879-15892. [PMID: 31592458 PMCID: PMC6776977 DOI: 10.1021/acsomega.9b01788] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 08/27/2019] [Indexed: 05/04/2023]
Abstract
Early metal complexes supported by hemilabile, monoanionic di(pyridyl) pyrrolide ligands substituted with mesityl and anthracenyl groups were synthesized to probe the possibility of second coordination sphere arene-π interactions with ligands with potential for allosteric control in coordination chemistry, substrate activation, and olefin polymerization. Yttrium alkyl, indolide, and amide complexes were prepared and structurally characterized; close contacts between the anthracenyl substituents and Y-bound ligands are observed in the solid state. Titanium, zirconium, and hafnium tris(dimethylamido) complexes were synthesized, and their ethylene polymerization activity was tested. In the solid state structure of one of the Ti tris(dimethylamido) complexes, coordination of Ti to only one of the pyridine donors is observed pointing to the hemilabile character of the di(pyridyl) pyrrolide ligands.
Collapse
Affiliation(s)
- Jessica Sampson
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E California Blvd., Pasadena, California 91125, United States
| | - Gyeongshin Choi
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E California Blvd., Pasadena, California 91125, United States
| | - Muhammed Naseem Akhtar
- Center
for Refining and Petrochemicals, King Fahd
University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - E.A. Jaseer
- Center
for Refining and Petrochemicals, King Fahd
University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Rajesh Theravalappil
- Center
for Refining and Petrochemicals, King Fahd
University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Nestor Garcia
- Center
for Refining and Petrochemicals, King Fahd
University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Theodor Agapie
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E California Blvd., Pasadena, California 91125, United States
- E-mail:
| |
Collapse
|
9
|
Haiduc I. ReviewInverse coordination. Organic nitrogen heterocycles as coordination centers. A survey of molecular topologies and systematization. Part 1. Five-membered and smaller rings. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1641702] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
| |
Collapse
|
10
|
Ohta S, Shimbayashi M, Miyamoto R, Okazaki M. Synthesis and Structure of a Bis(indolyl)-Coordinated Titanium Diamido Complex, and Its Catalytic Applications in the Intermolecular Hydroamination of Alkynes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180181] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shun Ohta
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
| | - Masaya Shimbayashi
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
| | - Ryo Miyamoto
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
| | - Masaaki Okazaki
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
| |
Collapse
|
11
|
Huang Y, Wei W, Meng X, Zhang L, Chen Y, Jiang T. Silane‐bridged diphosphine ligand for palladium‐catalyzed ethylene oligomerization. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- YongWang Huang
- Tianjin Marine Chemical Technology Engineering Center, Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| | - Wei Wei
- Tianjin Marine Chemical Technology Engineering Center, Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| | - XueJiao Meng
- Tianjin Marine Chemical Technology Engineering Center, Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| | - Le Zhang
- Tianjin Marine Chemical Technology Engineering Center, Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| | - YanHui Chen
- Tianjin Marine Chemical Technology Engineering Center, Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| | - Tao Jiang
- Tianjin Marine Chemical Technology Engineering Center, Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| |
Collapse
|
12
|
Guo L, Wang S, Wei Y, Zhou S, Zhu X, Mu X. Reactivity of 1,3-Disubstituted Indoles with Lithium Compounds: Substituents and Solvents Effects on Coordination and Reactivity of Resulting 1,3-Disubstituted-2-Indolyl Lithium Complexes. Inorg Chem 2017; 56:6197-6207. [PMID: 28474884 DOI: 10.1021/acs.inorgchem.7b00179] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reactivity of 1,3-disubstituted indolyl compounds with lithium reagents was studied to reveal the substituents and solvent effects on coordination modes and reactivities resulting in different indolyl lithium complexes. Treatment of 1-alkyl-3-imino functionalized compounds 1-R-3-(R'N═CH)C8H5N [R = Bn, R' = Dipp (HL1); R = Bn, R' = tBu (HL2); R = CH3OCH2, R' = Dipp (HL3); Dipp = iPr2C6H3] with Me3SiCH2Li or nBuLi in hydrocarbon solvents (toluene or n-hexane) produced 1,3-disubstituted-2-indolyl lithium complexes [η1:(μ2-η1:η1)-1-Bn-3-(DippN═CH)C8H4NLi]2 (1), {[η1:(μ3-η1:η1:η1)-1-Bn-3-(tBuN═CH)C8H4N][η2:η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4N][η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4N]Li3} (2), and [η1:η1:(μ2-η1:η1)-1-CH3OCH2-3-(DippN═CH)C8H4NLi]2 (3), respectively. The bonding modes of the indolyl ligand were kept in 1 by coordination with donor solvent, affording [η1:(μ2-η1:η1)-1-Bn-3-(DippN═CH)C8H4NLi(THF)]2 (4). The trinuclear complex 2 was converted to dinuclear form with a change of bonding modes of the indolyl ligand by treatment of 2 with donor solvent THF, producing [η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4NLi(THF)]2 (5). X-ray diffraction established that compounds 1, 3, 4, and 5 crystallized as dinuclear structures with the carbanionic sp2 carbon atoms of the indolyl ligands coordinated to lithium ions in a μ2-η1:η1 manner, while compound 2 crystallized as a trinuclear structure and the carbanionic atoms of the indolyl moieties coordinated to lithium ions in μ2-η1:η1 and μ3-η1:η1:η1 manners. When the lithiation reaction of HL1 with 1 equiv of nBuLi was carried out in THF, the monomeric lithium complex {η1:η1-1-Bn-3-(DippN═CH)-2-[1'-Bn-3'-(DippNCH)C8H5N]C8H4NLi(THF)} (6) having coupled indolyl moieties was obtained. The compound 6 can also be prepared by the reaction of 1 with 0.5 equiv of HL1 with a higher isolated yield. Accordingly, the lithium complexes [η1:η4-1-Bn-3-tBuN═CH-2-(1'-Bn-3'-tBuNCHC8H5N)C8H4NLi(L)] (L = THF, 7a; L = Et2O, 7b) with the coupled indolyl moieties in η4 mode were isolated by treatment of HL2 with 2 in THF or Et2O. All complexes were characterized by spectroscopic methods, and their structures were determined by X-ray diffraction study.
Collapse
Affiliation(s)
- Liping Guo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China.,Department of Applied Chemistry and Environmental Engineering, Bengbu College , Bengbu, Anhui 233030, China
| | - Shaowu Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , Shanghai 200032, China
| | - Yun Wei
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Shuangliu Zhou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Xiancui Zhu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Xiaolong Mu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| |
Collapse
|
13
|
Chen CT, Fischer ME, Windsor C, Vei IC, Calatayud DG, Green ML, Pascu SI. Investigations into the reactivity of lithium indenyl with alpha diimines with chlorinated backbones and formation of related functional ligands and metal complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.09.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
Wang T, Dong B, Chen YH, Mao GL, Jiang T. Nickel complexes incorporating pyrazole-based ligands for ethylene dimerization to 1-butylene. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.04.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
15
|
Roymuhury SK, Chakraborty D, Ramkumar V. Synthesis and characterization of group 4 metal alkoxide complexes containing imine based bis-bidentate ligands: effective catalysts for the ring opening polymerization of lactides, epoxides and polymerization of ethylene. Dalton Trans 2015; 44:10352-67. [DOI: 10.1039/c5dt01092f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A series of group 4 complexes containing imine based bis-bidentate ligands were synthesized and used as catalysts for various polymerizations.
Collapse
Affiliation(s)
- Sagnik K. Roymuhury
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna 800 013
- India
| | | | | |
Collapse
|
16
|
Roymuhury SK, Chakraborty D, Ramkumar V. Zwitterionic group 4 aminophenolate catalysts for the polymerization of lactides and ethylene. NEW J CHEM 2015. [DOI: 10.1039/c5nj00486a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of group 4 metal chloride complexes based on aminophenol ligands were synthesized and characterized by conventional spectroscopic techniques, elemental analysis and X-ray crystallography.
Collapse
Affiliation(s)
- Sagnik K. Roymuhury
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800 013
- India
| | | | | |
Collapse
|
17
|
Wang F, Wang S, Zhu X, Zhou S, Miao H, Gu X, Wei Y, Yuan Q. Novel Lanthanide Amides Incorporating Neutral Pyrrole Ligand in a Constrained Geometry Architecture: Synthesis, Characterization, Reaction, and Catalytic Activity. Organometallics 2013. [DOI: 10.1021/om400409x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Fenhua Wang
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.
R. China
- College of Biological and Chemical
Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, P.
R. China
| | - Shaowu Wang
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.
R. China
- State Key Laboratory
of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, Shanghai 200032, P. R. China
| | - Xiancui Zhu
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.
R. China
| | - Shuangliu Zhou
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.
R. China
| | - Hui Miao
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.
R. China
| | - Xiaoxia Gu
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.
R. China
| | - Yun Wei
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.
R. China
| | - Qingbing Yuan
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.
R. China
| |
Collapse
|
18
|
Wu J, Chen Y, Chen Z, Liu W, Li Y, Pei H, Liu Y, Gao Q, Li W. Synthesis, Structures and DFT Studies of Imido-bridged and (Bis)ligand-coordinated Titanium Complexes. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
19
|
Kreye M, Glöckner A, Daniliuc CG, Freytag M, Jones PG, Tamm M, Walter MD. Sterically encumbered pyrrolyl ligands and their incorporation into the cycloheptatrienyl zirconium coordination sphere. Dalton Trans 2013. [DOI: 10.1039/c2dt32433d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
20
|
|