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Hassan A, Mollah MMR, Jayashree R, Jain A, Das S, Das N. Ultrafast Removal of Thorium and Uranium from Radioactive Waste and Groundwater Using Highly Efficient and Radiation-Resistant Functionalized Triptycene-Based Porous Organic Polymers. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38687684 DOI: 10.1021/acsami.4c01397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Thorium (Th) and uranium (U) are important strategic resources in nuclear energy-based heavy industries such as energy and defense sectors that also generate significant radioactive waste in the process. The management of nuclear waste is therefore of paramount importance. Contamination of groundwater/surface water by Th/U is increasing at an alarming rate in certain geographical locations. This necessitates the development of strategic adsorbent materials with improved performance for capturing Th/U species from radioactive waste and groundwater. This report describes the design of a unique, robust, and radiation-resistant porous organic polymer (POP: TP-POP-SO3NH4), which demonstrates ultrafast removal of Th(IV) (<30 s)/U(VI) (<60 s) species present in simulated radioactive wastewater/groundwater samples. Thermal, chemical, and radiation stabilities of these POPs were studied in detail. The synthesized ammoniated POP revealed exceptional capture efficiency for trace-level Th (<4 ppb) and U (<3 ppb) metal ions through the cation-exchange mechanism. TP-POP-SO3NH4 shows a significant sorption capacity [Th (787 mg/g) and U (854 mg/g)] with an exceptionally high distribution coefficient (Kd) of 107 mL/g for Th. This work also demonstrates a facile protocol to convert a nonperforming POP, by simple chemical modifications, into a superfast adsorbent for efficient uptake/removal of U/Th.
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Affiliation(s)
- Atikur Hassan
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar 801106, India
| | - Md Mofizur Rahman Mollah
- Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
| | - Ravikumar Jayashree
- Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
| | - Ashish Jain
- Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
| | - Soumen Das
- Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
| | - Neeladri Das
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar 801106, India
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2
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Xu H, Lv ZJ, Chen X, Xi Z, Wei J. N-Aryloxide-Amidinate Thorium Complexes. Inorg Chem 2024; 63:5530-5540. [PMID: 38457482 DOI: 10.1021/acs.inorgchem.3c04505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Abstract
An N-aryloxide-amidine ligand (1), [ONNO] ligand, integrating phenoxide (PhO-) and amidine ligands through methylene linkers, was employed in actinide chemistry. Upon reaction of the deprotonated ligand with ThCl4(DME)2 in ether, the corresponding dimer complex 2 was obtained. Upon treatment of 2 with KCp* (Cp* = Cp(Me)5) in tetrahydrofuran, the corresponding {[ONNO]ThIVCp*(LiCl)}2 (4) was obtained. In complex 2, the two ArO- arms bonded from the same ligand to different ThIV centers. In contrast, both ArO- arms coordinated to the same metal center in 4. Notably, when a mixture of 2 and bipyridine was treated with one or two equiv of KC8, the [ONNO]ThIV-bipyridyl•̅ radical dimer complex (5) and [ONNO]ThIV-bipyridyl2- dianionic dimer species (6) were obtained, respectively.
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Affiliation(s)
- Hanhua Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Ze-Jie Lv
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Xiao Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Junnian Wei
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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3
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Ismaeel N, Zhuo Z, Imran S, Yuan D, Yao Y. Synthesis and characterization of rare earth/lithium complexes stabilized by ethylenediamine-bridged bis(phenolate) ligands and their activity in catalyzing amidation reactions. Dalton Trans 2022; 51:13892-13901. [PMID: 36040382 DOI: 10.1039/d2dt02642b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rare earth/lithium complexes stabilized by ethylenediamine-bridged bis(phenolate) ligands have been synthesized and characterized. In addition to five rare earth/lithium amides isolated as major complexes, two other rare earth/lithium complexes bearing two phenolate ligands were also isolated. The activities of rare earth/lithium amides in catalyzing the amidation of aldehydes and amines were studied, which revealed that the yttrium/lithium complex was highly active for a wide range of substrates, generating 58 examples of amides in 42-99% yields under mild conditions (i.e., room temperature, 3-hour reaction time, additive-free). More importantly, this is the first example of rare earth-based catalysts capable of catalyzing the amidation of primary aliphatic amines.
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Affiliation(s)
- Nadia Ismaeel
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People's Republic of China.
| | - Zhixing Zhuo
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People's Republic of China.
| | - Sajid Imran
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People's Republic of China.
| | - Dan Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People's Republic of China.
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People's Republic of China.
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4
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Feng H, Yang D, Mei T, Zhang Y, Wang B, Qu J. Synthesis and Structure of Thiolate‐Bridged Diiron and Dicobalt Complexes Supported by Modified β‐Diketiminate Ligand. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Huajin Feng
- Dalian University of Technology State Key Laboratory of Fine Chemicals CHINA
| | - Dawei Yang
- Dalian University of Technology State Key Laboratory of Fine Chemicals 2# Linggong Road 116024 Dalian CHINA
| | - Tao Mei
- Dalian University of Technology State Key Laboratory of Fine Chemicals CHINA
| | - Yahui Zhang
- Dalian University of Technology State Key Laboratory of Fine Chemicals CHINA
| | - Baomin Wang
- Dalian University of Technology State Key Laboratory of Fine Chemicals CHINA
| | - Jingping Qu
- Dalian University of Technology State Key Laboratory of Fine Chemicals CHINA
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5
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Li Y, Pan H, Lu Y, Luo Y, Dang Y, Wang Y, Xia S, Li Y, Xia Y. Lithium and magnesium complexes from the employment of pyridyl-pendanted unsymmetrical β-diketiminates: syntheses and utilization as catalysts for the hydroboration of carbonyl compounds. Dalton Trans 2022; 51:3616-3624. [DOI: 10.1039/d1dt03235f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The push for environmentally benign and sustainable chemical processes has reinforced the demand to displace transition metals with cheap, nontoxic and naturally abundant metals. To fulfil this requirement, we endeavored...
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6
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Wedal JC, Windorff CJ, Huh DN, Ryan AJ, Ziller JW, Evans WJ. Structural variations in cyclopentadienyl uranium(III) iodide complexes. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1856824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Justin C. Wedal
- Department of Chemistry, University of California, Irvine, CA, USA
| | - Cory J. Windorff
- Department of Chemistry, University of California, Irvine, CA, USA
| | - Daniel N. Huh
- Department of Chemistry, University of California, Irvine, CA, USA
| | - Austin J. Ryan
- Department of Chemistry, University of California, Irvine, CA, USA
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, CA, USA
| | - William J. Evans
- Department of Chemistry, University of California, Irvine, CA, USA
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7
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Casey KC, Appiah JK, Robinson JR. Low-Symmetry β-Diketimine Aryloxide Rare-Earth Complexes: Flexible, Reactive, and Selective. Inorg Chem 2020; 59:14827-14837. [PMID: 32986427 DOI: 10.1021/acs.inorgchem.0c02170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report the synthesis, characterization, and reactivity of a new low-symmetry β-diketimine featuring a pendant amino(methyl)phenol donor and its corresponding heteroleptic rare-earth (RE) complexes. This includes the first structurally characterized examples of alcoholysis and insertion from an isolated REIII amide in a β-diketimine framework. The flexible methylene linkage leads to REIII complexes with tunable dynamic solution behavior that defines their stoichiometric and catalytic reactivity. The addition of a strong neutral donor ligand, tricyclohexylphosphine oxide, suppresses a prevalent catalyst degradation pathway (base-promoted elimination) and dramatically enhances the catalyst performance in the stereospecific ring-opening polymerization of rac-β-butyrolactone. Our results further demonstrate the importance of ligand reorganization in the stoichiometric and catalytic activity of REIII ions.
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Affiliation(s)
- Kerry C Casey
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, United States
| | - Jude K Appiah
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, United States
| | - Jerome R Robinson
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, United States
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8
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Boreen MA, Gould CA, Booth CH, Hohloch S, Arnold J. Structure and magnetism of a tetrahedral uranium(iii) β-diketiminate complex. Dalton Trans 2020; 49:7938-7944. [PMID: 32495782 DOI: 10.1039/d0dt01599g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the functionalisation of the previously reported uranium(iii) β-diketiminate complex (BDI)UI2(THF)2 (1) with one and two equivalents of a sterically demanding 2,6-diisopropylphenolate ligand (ODipp) leading to the formation of two heteroleptic complexes: [(BDI)UI(ODipp)]2 (2) and (BDI)U(ODipp)2 (3). The latter is a rare example of a tetrahedral uranium(iii) complex, and it shows single-molecule magnet behaviour.
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Affiliation(s)
- Michael A Boreen
- Department of Chemistry, University of California, Berkeley, California 94720, USA.
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9
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Riedhammer J, Aguilar-Calderón JR, Miehlich M, Halter DP, Munz D, Heinemann FW, Fortier S, Meyer K, Mindiola DJ. Werner-Type Complexes of Uranium(III) and (IV). Inorg Chem 2020; 59:2443-2449. [DOI: 10.1021/acs.inorgchem.9b03229] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Judith Riedhammer
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen 91058, Germany
| | - J. Rolando Aguilar-Calderón
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Matthias Miehlich
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen 91058, Germany
| | - Dominik P. Halter
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen 91058, Germany
| | - Dominik Munz
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen 91058, Germany
| | - Frank W. Heinemann
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen 91058, Germany
| | - Skye Fortier
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Karsten Meyer
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen 91058, Germany
| | - Daniel J. Mindiola
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen 91058, Germany
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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10
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Kurogi T, Chu J, Chen Y, Mindiola DJ. Neutral and Anionic Monomeric Zirconium Imides Prepared via Selective C=N Bond Cleavage of a Multidentate and Sterically Demanding β‐Diketiminato Ligand. Chem Asian J 2019; 14:2629-2638. [DOI: 10.1002/asia.201900451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/13/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Takashi Kurogi
- Department of ChemistryUniversity of Pennsylvania 231 South 34th Street Philadelphia PA 19104 USA
| | - Jiaxiang Chu
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Yaofeng Chen
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Daniel J. Mindiola
- Department of ChemistryUniversity of Pennsylvania 231 South 34th Street Philadelphia PA 19104 USA
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11
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Rezaeivala M, Golbedaghi R, Khalili M, Ahmad M, Sayin K, Chalabian F. The Different Effects of Metal Ions on the Synthesis of Macroacyclic Compounds: X-ray Crystal Structure, Theoretical Studies, Antibacterial and Antifungal Activities. RUSS J COORD CHEM+ 2019. [DOI: 10.1134/s1070328419020064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Moreno da Costa D, Borja L, Verdugo C, Martinez J, Quintero C, Jaque P, Trofymchuk OS, Daniliuc CG, Cabrera AR, Rojas RS. Unexpected intramolecular N-arylcyano-β-diketiminate cyclization in new aminoquinoline derivative complexes of aluminium for CO2 fixation into cyclic carbonates. NEW J CHEM 2019. [DOI: 10.1039/c9nj02499a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
exo-Dig intramolecular cyclization of β-diketiminates allowed to obtain 4-amino-3-iminoquinolines ligands through a novel pathway. Al(III) complexes bearing these ligands where active towards the synthesis of cyclic carbonates from epoxides and CO2.
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Affiliation(s)
- David Moreno da Costa
- Departamento de Química Inorgánica
- Facultad de Química y de Farmacia
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Luis Borja
- Departamento de Química Inorgánica
- Facultad de Química y de Farmacia
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Camilo Verdugo
- Departamento de Química Inorgánica
- Facultad de Química y de Farmacia
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Javier Martinez
- Departamento de Química Inorgánica
- Facultad de Química y de Farmacia
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Celso Quintero
- Departamento de Química Inorgánica
- Facultad de Química y de Farmacia
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Pablo Jaque
- Departamento de Química Orgánica y Fisicoquímica
- Facultad de Ciencias Químicas y Farmacéuticas
- Universidad de Chile
- Santiago
- Chile
| | | | | | - Alan R. Cabrera
- Departamento de Química Inorgánica
- Facultad de Química y de Farmacia
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Rene S. Rojas
- Departamento de Química Inorgánica
- Facultad de Química y de Farmacia
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
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13
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Ringgold M, Rehe D, Hrobárik P, Kornienko AY, Emge TJ, Brennan JG. Thorium Cubanes–Synthesis, Solid-State and Solution Structures, Thermolysis, and Chalcogen Exchange Reactions. Inorg Chem 2018; 57:7129-7141. [DOI: 10.1021/acs.inorgchem.8b00836] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marissa Ringgold
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - David Rehe
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Peter Hrobárik
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, SK-84215 Bratislava, Slovakia
| | - Anna Y. Kornienko
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Thomas J. Emge
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - John G. Brennan
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
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14
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Chand K, Tsai C, Chen H, Ching W, Hsu S, Carey JR, Hsu SCN. Improved Synthesis of Unsymmetrical
N
‐Aryl‐
N′
‐alkylpyridyl ß‐Diketimines Using Molecular Sieves and their Lithium Complexes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kuldeep Chand
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University 807 Kaohsiung Taiwan
| | - Cheng‐Long Tsai
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University 807 Kaohsiung Taiwan
| | - Hsuan‐Ying Chen
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University 807 Kaohsiung Taiwan
| | - Wei‐Min Ching
- Instrumentation Center National Taiwan Normal University 11677 Department of Chemistry Taiwan
| | - Sung‐Po Hsu
- Department of Physiology School of Medicine College of Medicine Taipei Medical University 110 Taipei Taiwan
| | - James R. Carey
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University 807 Kaohsiung Taiwan
- Department of Applied Chemistry National University of Kaohsiung 804 Kaohsiung Taiwan
| | - Sodio C. N. Hsu
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University 807 Kaohsiung Taiwan
- Department of Medical Research Kaohsiung Medical University Hospital 807 Kaohsiung Taiwan
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15
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Hohloch S, Garner ME, Parker BF, Arnold J. New supporting ligands in actinide chemistry: tetramethyltetraazaannulene complexes with thorium and uranium. Dalton Trans 2018; 46:13768-13782. [PMID: 28959804 DOI: 10.1039/c7dt02682j] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report the synthesis, characterization, and preliminary reactivity of new heteroleptic thorium and uranium complexes supported by the macrocyclic TMTAA ligand (TMTAA = Tetramethyl-tetra-aza-annulene). The dihalide complexes Th(TMTAA)Cl2(THF)2 (1), [UCl2(TMTAA)]2 (2) and U(TMTAA)I2 (3) are further functionalized to the Cp* derivatives ThCp*(TMTAA)Cl (4), UCp*(TMTAA)Cl (5) and UCp*(TMTAA)I (6) (Cp* = pentamethylcyclopentadienide). Compounds 4-6 are also obtained through a one-pot reaction from standard thorium(iv) and uranium(iv) starting materials, Li2TMTAA and KCp*. Complexes 1-6 function as valuable starting materials for salt metathesis chemistry. Treatment of precursors 4 or 5 with trimethylsilylmethyllithium (LiCH2TMS) results in the new actinide TMTAA alkyl complexes ThCp*(TMTAA)(CH2TMS) (7) and UCp*(TMTAA)(CH2TMTS) (8), respectively. The TMTAA-derived alkyl complexes (7 and 8) show unexpected stability and are stable for several weeks at room temperature in solution and in the solid-state. Additionally, double substitution of the halide ligands in 1-3 shows a strong dependence on the nucleophile used. While weaker nucleophiles, such as amides, and more sterically demanding nucleophiles, such as Cp (Cp = cyclopenadienide), favour the formation of bis-TMTAA "sandwich" complexes [An(TMTAA)2] (An = Th (9) and An = U (10)), the use of oxygen-functionalized ligands like the ODipp anion (Dipp = diisopropylphenyl) results in the formation of the doubly substituted species Th(ODipp)2TMTAA (11) and U(ODipp)2TMTAA (12). We also describe the divergent reactivity of the TMTAA ligand towards uranium(iii). Unlike the syntheses of actinide(iv) TMTAA complexes, the synthesis of a uranium(iii) TMTAA was not successful and only uranium(iv) species could be obtained.
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Affiliation(s)
- Stephan Hohloch
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
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16
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Rare-earth metal complexes of β-diketiminato ligands bearing pendant nitrogen or oxygen donors. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.12.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Chen C, Bellows SM, Holland PL. Tuning steric and electronic effects in transition-metal β-diketiminate complexes. Dalton Trans 2015; 44:16654-70. [PMID: 26244489 DOI: 10.1039/c5dt02215k] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
β-Diketiminates are widely used supporting ligands for building a range of metal complexes with different oxidation states, structures, and reactivities. This Perspective summarizes the steric and electronic influences of ligand substituents on these complexes, with an eye toward informing the design of new complexes with optimized properties. The backbone and N-aryl substituents can give significant steric effects on structure, reactivity and selectivity of reactions. The electron density on the metal can be tuned by installation of electron withdrawing or donating groups on the β-diketiminate ligand as well. Examples are shown from throughout the transition metal series to demonstrate different types of effects attributable to systematic variation of β-diketiminate ligands.
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Affiliation(s)
- Chi Chen
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, USA.
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18
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Faraj FL, Khaledi H, Morimoto Y, Itoh S, Olmstead MM, Ali HM. A Tetradentate β‐Diiminato Ligand Containing Phenolate Substituents: Flexivalent Coordination to Mn
III
, Co
III
, Ni
II
, and Cu
II. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402745] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fadhil Lafta Faraj
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, http://www.kimia.um.edu.my
- Department of Chemistry, Faculty of Science, University of Diyala Diyala, Iraq
| | - Hamid Khaledi
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, http://www.kimia.um.edu.my
| | - Yuma Morimoto
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871, Japan
| | - Shinobu Itoh
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871, Japan
| | - Marilyn M. Olmstead
- Department of Chemistry, University of California, One Shields Avenue, Davis, CA 95616, USA
| | - Hapipah Mohd Ali
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, http://www.kimia.um.edu.my
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Monreal MJ, Thomson RK, Scott BL, Kiplinger JL. Enhancing the synthetic efficacy of thorium tetrachloride bis(1,2-dimethoxyethane) with added 1,2-dimethoxyethane: Preparation of metallocene thorium dichlorides. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.04.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Rajendran N, Reddy ND. Synthesis of a sulfonate substituted β-diketimine ligand and its complexes of Co(II), Ni(II), Zn(II) and Pd(II). Polyhedron 2014. [DOI: 10.1016/j.poly.2014.01.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Barbon SM, Staroverov VN, Boyle PD, Gilroy JB. Hydrogen-bond-supported dimeric boron complexes of potentially tetradentate β-diketiminate ligands. Dalton Trans 2014; 43:240-50. [DOI: 10.1039/c3dt52188e] [Citation(s) in RCA: 26] [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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El-Zoghbi I, Kebdani M, Whitehorne TJJ, Schaper F. Selective and Nonselective Aza-Michael Additions Catalyzed by a Chiral Zirconium Bis-Diketiminate Complex. Organometallics 2013. [DOI: 10.1021/om400544z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ibrahim El-Zoghbi
- Centre in
Green Chemistry and
Catalysis, Department of Chemistry, Université de Montréal, C. P. 6128 Succ.
Centre-Ville, Montréal, Québec H3T 3J7, Canada
| | - Myriam Kebdani
- Centre in
Green Chemistry and
Catalysis, Department of Chemistry, Université de Montréal, C. P. 6128 Succ.
Centre-Ville, Montréal, Québec H3T 3J7, Canada
| | - Todd J. J. Whitehorne
- Centre in
Green Chemistry and
Catalysis, Department of Chemistry, Université de Montréal, C. P. 6128 Succ.
Centre-Ville, Montréal, Québec H3T 3J7, Canada
| | - Frank Schaper
- Centre in
Green Chemistry and
Catalysis, Department of Chemistry, Université de Montréal, C. P. 6128 Succ.
Centre-Ville, Montréal, Québec H3T 3J7, Canada
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Chen HL, Chuang HJ, Huang BH, Lin CC. Ring-opening polymerization of ε-caprolactone, β-butyrolactone and lactides by β-ketiminate pyrazolonate zinc complexes: Preparation and characterization. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.06.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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