1
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Wang S, Heng Y, Li T, Wang D, Hou G, Zi G, Walter MD. Intrinsic reactivity of [η 5-1,3-(Me 3Si) 2C 5H 3] 2U(η 4-C 4Ph 2) in small molecule activation. Dalton Trans 2022; 51:11072-11085. [PMID: 35796202 DOI: 10.1039/d2dt01730j] [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 uranium metallacyclocumulene, [η5-1,3-(Me3Si)2C5H3]2U(η4-C4Ph2) (3) was isolated from the reaction mixture containing [η5-1,3-(Me3Si)2C5H3]2UCl2 (1), potassium graphite (KC8) and 1,4-diphenylbutadiyne (PhCC-CCPh) in good yield. The reactivity of 3 towards various small organic molecules was evaluated. For example, while complex 3 shows no reactivity towards alkynes and 2,2'-bipyridine, it may deliver the [η5-1,3-(Me3Si)2C5H3]2U(II) fragment in the presence of Ph2E2 (E = S, Se) and Ph3CN3, or react as a nucleophile in the presence of carbodiimides, isothiocyanates, aldehydes, ketones, and pyridine derivatives, forming five-, seven- or nine-membered heterometallacycles. On the contrary, addition of Ph2CS to 3 induces CS bond cleavage yielding the dithiolate complex [η5-1,3-(Me3Si)2C5H3]2U[S2(C12H5Ph5)] (14). In contrast, the closely related, but sterically more encumbered uranium metallacyclocumulene [η5-1,2,4-(Me3Si)3C5H2]2U(η4-C4Ph2) (4) features a more limited reactivity which is restricted to mono- and double insertions with small unsaturated organic molecules such as isothiocyanates, ketones and nitriles.
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Affiliation(s)
- Shichun Wang
- Department of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Yi Heng
- Department of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Tongyu Li
- Department of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Dongwei Wang
- Department of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Guohua Hou
- Department of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Guofu Zi
- Department of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Marc D Walter
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany.
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2
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Fang W, Carpentier A, Sun X, Zhao Y, Maron L, Zhu C. Redox-induced reversible P-P coupling in a uranium complex. Chem Commun (Camb) 2021; 57:12175-12178. [PMID: 34726673 DOI: 10.1039/d1cc04765e] [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
A synthesized redox-active multidentate N-P ligand reacted with UCl4 in the presence of KHMDS or nBuLi, where two novel U(IV) complexes with or without P-P coupling were formed, respectively. The reversible P-P coupling in these complexes was observed in redox-induced reactions.
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Affiliation(s)
- Wei Fang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Ambre Carpentier
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France.
| | - Xiong Sun
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France.
| | - Congqing Zhu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
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3
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Bae DY, Lee G, Lee E. Fixation of Dinitrogen at an Asymmetric Binuclear Titanium Complex. Inorg Chem 2021; 60:12813-12822. [PMID: 34492761 DOI: 10.1021/acs.inorgchem.1c01050] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A new type of dititanium dinitrogen complex supported by a triphenolamine (TPA) ligand is reported. Analysis by single-crystal X-ray diffraction and Raman and NMR spectroscopy reveals different coordination geometries for the two titanium centers. Hence, coordination of TPA and a nitrogen ligand results in trigonal-bipyramidal geometry, while an octahedral titanium center is obtained upon additional coordination of an ethoxide generated upon C-O bond cleavage in a diethyl ether solvent molecule. The titanium complex successfully generates ammonia in the presence of an excess amount of PCy3HI and KC8 in 154% yield (per titanium atom). A titanium complex with a bulkier TPA does not form a dinitrogen complex, and mononuclear titanium dinitrogen complexes were not accessible, presumably because of the high tendency of early transition metals to form binuclear dinitrogen complexes.
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Affiliation(s)
- Dae Young Bae
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Gunhee Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
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4
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Revathi S, Raja P, Saha S, Eisen MS, Ghatak T. Recent developments in highly basic N-heterocyclic iminato ligands in actinide chemistry. Chem Commun (Camb) 2021; 57:5483-5502. [PMID: 34008633 DOI: 10.1039/d1cc00933h] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the last decade, major conceptual advances in the chemistry of actinide molecules and materials have been made to demonstrate their distinct reactivity profiles as compared to lanthanide and transition metal compounds, but some difficult questions remain concerning the intriguing stability of low-valent actinide complexes, and the importance of the 5f-orbitals in reactivity and bonding. The imidazolin-2-iminato moiety has been extensively used in ligands for the advancement of actinide chemistry owing to its unique capability of stabilizing the reactive and highly electrophilic metal ions by virtue of its strong electron donation and steric tunability. The current review article describes recent developments in the chemistry of light actinide metal ions (thorium and uranium) bearing these N-heterocyclic iminato moieties as supporting ligands. In addition, the effect of ring expansion of the N-heterocycle on the catalytic aptitude of the organoactinides is also described herein. The synthesis and reactivity of actinide complexes bearing N-heterocyclic iminato ligands are presented, and promising apposite applications are also presented. The current review focuses on addressing the catalytic behavior of actinide complexes with oxygen-containing substrates such as in the Tishchenko reaction, hydroelementation processes, and polymerization reactions. Actinide complexes have also found new catalytic applications, as demonstrated by the potent chemoselective carbonyl hydroboration and tandem proton-transfer esterification (TPTE) reaction, featuring coupling between an aldehyde and alcohol.
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Affiliation(s)
- Shanmugam Revathi
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamil Nadu, India.
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5
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Wang D, Ding W, Hou G, Zi G, Walter MD. Uranium versus Thorium: Synthesis and Reactivity of [η 5 -1,2,4-(Me 3 C) 3 C 5 H 2 ] 2 U[η 2 -C 2 Ph 2 ]. Chemistry 2021; 27:6767-6782. [PMID: 33559922 PMCID: PMC8251885 DOI: 10.1002/chem.202100089] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Indexed: 01/09/2023]
Abstract
The synthesis, electronic structure, and reactivity of a uranium metallacyclopropene were comprehensively studied. Addition of diphenylacetylene (PhC≡CPh) to the uranium phosphinidene metallocene [η5‐1,2,4‐(Me3C)3C5H2]2U=P‐2,4,6‐tBu3C6H2 (1) yields the stable uranium metallacyclopropene, [η5‐1,2,4‐(Me3C)3C5H2]2U[η2‐C2Ph2] (2). Based on density functional theory (DFT) results the 5f orbital contributions to the bonding within the metallacyclopropene U‐(η2‐C=C) moiety increases significantly compared to the related ThIV compound [η5‐1,2,4‐(Me3C)3C5H2]2Th[η2‐C2Ph2], which also results in more covalent bonds between the [η5‐1,2,4‐(Me3C)3C5H2]2U2+ and [η2‐C2Ph2]2− fragments. Although the thorium and uranium complexes are structurally closely related, different reaction patterns are therefore observed. For example, 2 reacts as a masked synthon for the low‐valent uranium(II) metallocene [η5‐1,2,4‐(Me3C)3C5H2]2UII when reacted with Ph2E2 (E=S, Se), alkynes and a variety of hetero‐unsaturated molecules such as imines, ketazine, bipy, nitriles, organic azides, and azo derivatives. In contrast, five‐membered metallaheterocycles are accessible when 2 is treated with isothiocyanate, aldehydes, and ketones.
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Affiliation(s)
- Deqiang Wang
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Wanjian Ding
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Guohua Hou
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Guofu Zi
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Marc D Walter
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
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6
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Wang P, Douair I, Zhao Y, Wang S, Zhu J, Maron L, Zhu C. Facile Dinitrogen and Dioxygen Cleavage by a Uranium(III) Complex: Cooperativity Between the Non‐Innocent Ligand and the Uranium Center. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Penglong Wang
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Iskander Douair
- LPCNO, CNRS & INSA Université Paul Sabatier 135 Avenue de Rangueil 31077 Toulouse France
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Soochow University Suzhou China
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Laurent Maron
- LPCNO, CNRS & INSA Université Paul Sabatier 135 Avenue de Rangueil 31077 Toulouse France
| | - Congqing Zhu
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
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7
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Wang P, Douair I, Zhao Y, Wang S, Zhu J, Maron L, Zhu C. Facile Dinitrogen and Dioxygen Cleavage by a Uranium(III) Complex: Cooperativity Between the Non‐Innocent Ligand and the Uranium Center. Angew Chem Int Ed Engl 2020; 60:473-479. [DOI: 10.1002/anie.202012198] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Penglong Wang
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Iskander Douair
- LPCNO, CNRS & INSA Université Paul Sabatier 135 Avenue de Rangueil 31077 Toulouse France
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Soochow University Suzhou China
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Laurent Maron
- LPCNO, CNRS & INSA Université Paul Sabatier 135 Avenue de Rangueil 31077 Toulouse France
| | - Congqing Zhu
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
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8
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Ma W, Douair I, Maron L, Ye Q. Incorporation of Boron into Uranium Metallacycles: Synthesis, Structure, and Reactivity of Boron-Containing Uranacycles Derived from Bis(alkynyl)boranes. Chemistry 2020; 26:13573-13577. [PMID: 32761976 DOI: 10.1002/chem.202003611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Indexed: 11/08/2022]
Abstract
The reaction of uranacyclopropene complex (C5 Me5 )2 U[η2 -1,2-C2 (SiMe3 )2 ] with B-aryl bis(alkynyl)borane PhB(C≡CPh)2 led to the first six-membered uranium metallaboracycle, while the reaction with B-amino bis(alkynyl)borane (Me3 Si)2 NB(C≡CPh)2 afforded an unexpected uranaborabicyclo[2.2.0] complex via [2+2] cycloaddition. The reaction with CuCl revealed the non-innocent property of the rearranged bis(alkynyl)boron species towards oxidant. The reactions with isocyanide DippNC: (Dipp=2,6-iPr2 -C6 H3 ) and isocyanate tBuNCO afforded the novel uranaborabicyclo[3.2.0] complexes. All new complexes have been structurally characterized. DFT calculations were performed to provide more insights into the electronic structures and the reaction mechanism.
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Affiliation(s)
- Wangyang Ma
- Department of Chemistry, Southern University of Science and Technology, 518055, Shenzhen, China
| | - Iskander Douair
- LPCNO, CNRS & INSA, Université Paul Sabatier, Toulouse, France
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, Toulouse, France
| | - Qing Ye
- Department of Chemistry, Southern University of Science and Technology, 518055, Shenzhen, China
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9
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Sears JD, Sergentu D, Baker TM, Brennessel WW, Autschbach J, Neidig ML. The Exceptional Diversity of Homoleptic Uranium–Methyl Complexes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jeffrey D. Sears
- Department of Chemistry University of Rochester, B31 Hutchison Hall 120 Trustee Road Rochester NY 14627 USA
| | | | - Tessa M. Baker
- Department of Chemistry University of Rochester, B31 Hutchison Hall 120 Trustee Road Rochester NY 14627 USA
| | - William W. Brennessel
- Department of Chemistry University of Rochester, B31 Hutchison Hall 120 Trustee Road Rochester NY 14627 USA
| | - Jochen Autschbach
- Department of Chemistry University at Buffalo State University of New York Buffalo NY 14260 USA
| | - Michael L. Neidig
- Department of Chemistry University of Rochester, B31 Hutchison Hall 120 Trustee Road Rochester NY 14627 USA
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10
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Affiliation(s)
- Josef T. Boronski
- Department of Chemistry; The University of Manchester; Oxford Road M13 9PL Manchester UK
| | - Stephen T. Liddle
- Department of Chemistry; The University of Manchester; Oxford Road M13 9PL Manchester UK
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11
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Sears JD, Sergentu DC, Baker TM, Brennessel WW, Autschbach J, Neidig ML. The Exceptional Diversity of Homoleptic Uranium-Methyl Complexes. Angew Chem Int Ed Engl 2020; 59:13586-13590. [PMID: 32392392 DOI: 10.1002/anie.202005138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/07/2020] [Indexed: 11/11/2022]
Abstract
Homoleptic σ-bonded uranium-alkyl complexes have been a synthetic target since the Manhattan Project. The current study describes the synthesis and characterization of several unprecedented uranium-methyl complexes. Amongst these complexes, the first example of a homoleptic uranium-alkyl dimer, [Li(THF)4 ]2 [U2 (CH3 )10 ], as well as a seven-coordinate uranium-methyl monomer, {Li(OEt2 )Li(OEt2 )2 UMe7 Li}n were both crystallographically identified. The diversity of complexes reported herein provides critical insight into the structural diversity, electronic structure and bonding in uranium-alkyl chemistry.
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Affiliation(s)
- Jeffrey D Sears
- Department of Chemistry, University of Rochester, B31 Hutchison Hall, 120 Trustee Road, Rochester, NY, 14627, USA
| | - Dumitru-Claudiu Sergentu
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA
| | - Tessa M Baker
- Department of Chemistry, University of Rochester, B31 Hutchison Hall, 120 Trustee Road, Rochester, NY, 14627, USA
| | - William W Brennessel
- Department of Chemistry, University of Rochester, B31 Hutchison Hall, 120 Trustee Road, Rochester, NY, 14627, USA
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA
| | - Michael L Neidig
- Department of Chemistry, University of Rochester, B31 Hutchison Hall, 120 Trustee Road, Rochester, NY, 14627, USA
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12
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Tsoureas N, Maron L, Kilpatrick AFR, Layfield RA, Cloke FGN. Ethene Activation and Catalytic Hydrogenation by a Low-Valent Uranium Pentalene Complex. J Am Chem Soc 2019; 142:89-92. [DOI: 10.1021/jacs.9b11929] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Nikolaos Tsoureas
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
| | - Laurent Maron
- INSA, UPS, LPCNO (IRSAMC), Université de Toulouse, 135 avenue de Ranqueil, 31077 Toulouse, France
| | | | - Richard A. Layfield
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
| | - F. Geoffrey N. Cloke
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
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13
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Boronski JT, Doyle LR, Seed JA, Wooles AJ, Liddle ST. f-Element Half-Sandwich Complexes: A Tetrasilylcyclobutadienyl-Uranium(IV)-Tris(tetrahydroborate) Anion Pianostool Complex. Angew Chem Int Ed Engl 2019; 59:295-299. [PMID: 31724808 DOI: 10.1002/anie.201913640] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/11/2019] [Indexed: 12/26/2022]
Abstract
Despite there being numerous examples of f-element compounds supported by cyclopentadienyl, arene, cycloheptatrienyl, and cyclooctatetraenyl ligands (C5-8 ), cyclobutadienyl (C4 ) complexes remain exceedingly rare. Here, we report that reaction of [Li2 {C4 (SiMe3 )4 }(THF)2 ] (1) with [U(BH4 )3 (THF)2 ] (2) gives the pianostool complex [U{C4 (SiMe3 )4 }(BH4 )3 ][Li(THF)4 ] (3), where use of a borohydride and preformed C4 -unit circumvents difficulties in product isolation and closing a C4 -ring at uranium. Complex 3 is an unprecedented example of an f-element half-sandwich cyclobutadienyl complex, and it is only the second example of an actinide-cyclobutadienyl complex, the other being an inverse-sandwich. The U-C distances are short (av. 2.513 Å), reflecting the formal 2- charge of the C4 -unit, and the SiMe3 groups are displaced from the C4 -plane, which we propose maximises U-C4 orbital overlap. DFT calculations identify two quasi-degenerate U-C4 π-bonds utilising the ψ2 and ψ3 molecular orbitals of the C4 -unit, but the potential δ-bond using the ψ4 orbital is vacant.
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Affiliation(s)
- Josef T Boronski
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Laurence R Doyle
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - John A Seed
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Ashley J Wooles
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Stephen T Liddle
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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14
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Boronski JT, Doyle LR, Seed JA, Wooles AJ, Liddle ST. f‐Element Half‐Sandwich Complexes: A Tetrasilylcyclobutadienyl–Uranium(IV)–Tris(tetrahydroborate) Anion Pianostool Complex. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201913640] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Josef T. Boronski
- Department of Chemistry and Centre for Radiochemistry Research The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Laurence R. Doyle
- Department of Chemistry and Centre for Radiochemistry Research The University of Manchester Oxford Road Manchester M13 9PL UK
| | - John A. Seed
- Department of Chemistry and Centre for Radiochemistry Research The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Ashley J. Wooles
- Department of Chemistry and Centre for Radiochemistry Research The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Stephen T. Liddle
- Department of Chemistry and Centre for Radiochemistry Research The University of Manchester Oxford Road Manchester M13 9PL UK
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15
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Pagano JK, Scott BL, Morris DE, Kiplinger JL. Synthesis, characterization, and reactivity of the first uranium metallocene 1,2-bis(diphenylphosphino)acetylene complexes. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Abstract
All-carbon metallacycles of the d-transition metals have received widespread attention over the past three decades because of their exceptional intrinsic reactivity. However, in recent years, significant progress has also been made in the synthesis and characterization of actinide metallacyclopropenes, metallacyclopentadienes, and metallacyclocumulenes (metallacyclopentatrienes). Such actinide metallacycles are of interest because of their unique structural properties, their potential application in novel group transfer reactions and catalysis, as well as their ability to engage the 5f orbitals in metal-ligand bonding. This short review summarizes the latest developments in this area focusing on all-carbon actinide metallacycles, i.e., metallacyclopropenes, metallacyclopentadienes, and metallacyclocumulenes (metallacyclopentatrienes).
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Affiliation(s)
- Guofu Zi
- Department of Chemistry, Beijing Normal University, Beijing 100875, China.
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17
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Liu H, Khononov M, Eisen MS. Catalytic 1,2-Regioselective Dearomatization of N-Heteroaromatics via a Hydroboration. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00074] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heng Liu
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology. Haifa City 32000, Israel
| | - Maxim Khononov
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology. Haifa City 32000, Israel
| | - Moris S. Eisen
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology. Haifa City 32000, Israel
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18
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Ma W, Yu C, Chen T, Xu L, Zhang WX, Xi Z. Metallacyclopentadienes: synthesis, structure and reactivity. Chem Soc Rev 2018; 46:1160-1192. [PMID: 28119972 DOI: 10.1039/c6cs00525j] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Metallacyclopentadienes, which possess two M-C(sp2) bonds and feature the structure of M(C[upper bond 1 start]R1[double bond, length as m-dash]CR2-CR3[double bond, length as m-dash]C[upper bond 1 end]R4), are an important class of five-membered metallacycles. They are considered as both reactive intermediates in the stoichiometric and catalytic transformations of organic molecules and useful precursors to main group element compounds, and have received considerable attention in organometallic chemistry, coordination chemistry and synthetic organic chemistry over the past six decades because of their unique metallacyclic structure. This review comprehensively presents the synthesis, structure and reactivity of the s-, p-, d- and f-block metallacyclopentadienes distributed in the whole periodic table. In addition, their application in synthetic organic chemistry and polymer chemistry is summarized. This review aims to be beneficial for the design and synthesis of novel metallacyclopentadienes, and for promoting the rapid development of metallacyclic chemistry.
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Affiliation(s)
- Wangyang Ma
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Chao Yu
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Tianyang Chen
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Ling Xu
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China. and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
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19
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Synthesis, characterization and catalytic performances of benzimidazolin-2-iminato actinide (IV) complexes in the Tishchenko reactions for symmetrical and unsymmetrical esters. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2017.09.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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The role of uranium–arene bonding in H2O reduction catalysis. Nat Chem 2017; 10:259-267. [DOI: 10.1038/nchem.2899] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 10/25/2017] [Indexed: 11/08/2022]
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21
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Liu H, Fridman N, Tamm M, Eisen MS. Catalytic Addition of Alcohols to Carbodiimides Mediated by Benzimidazolin-2-iminato Actinide Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00432] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Heng Liu
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
| | - Natalia Fridman
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
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22
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Liu H, Fridman N, Tamm M, Eisen MS. Addition of E–H (E = N, P, C, O, S) Bonds to Heterocumulenes Catalyzed by Benzimidazolin-2-iminato Actinide Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00502] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Heng Liu
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
| | - Natalia Fridman
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
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23
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Zhang L, Fang B, Hou G, Zi G, Ding W, Walter MD. Experimental and Computational Studies of a Uranium Metallacyclocumulene. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00936] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Lei Zhang
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Bo Fang
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Guohua Hou
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Guofu Zi
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Wanjian Ding
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Marc D. Walter
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
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24
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Pagano JK, Erickson KA, Scott BL, Morris DE, Waterman R, Kiplinger JL. Synthesis and characterization of a new and electronically unusual uranium metallacyclocumulene, (C5Me5)2U(η4-1,2,3,4-PhC4Ph). J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.10.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Ghatak T, Drucker S, Fridman N, Eisen MS. Thorium complexes possessing expanded ring N-heterocyclic iminato ligands: synthesis and applications. Dalton Trans 2017; 46:12005-12009. [DOI: 10.1039/c7dt02126g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Novel thorium complexes containing six- and seven-membered rings iminato moieties are disclosed. The complexes are highly active for the Tishchenko and cross-Tishchenko reaction.
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Affiliation(s)
- Tapas Ghatak
- Schulich Faculty of Chemistry
- Technion − Israel Institute of Technology
- Technion Haifa
- Israel
| | - Shani Drucker
- Schulich Faculty of Chemistry
- Technion − Israel Institute of Technology
- Technion Haifa
- Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry
- Technion − Israel Institute of Technology
- Technion Haifa
- Israel
| | - Moris S. Eisen
- Schulich Faculty of Chemistry
- Technion − Israel Institute of Technology
- Technion Haifa
- Israel
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26
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Tsoureas N, Kilpatrick AFR, Inman CJ, Cloke FGN. Steric control of redox events in organo-uranium chemistry: synthesis and characterisation of U(v) oxo and nitrido complexes. Chem Sci 2016; 7:4624-4632. [PMID: 30155110 PMCID: PMC6013772 DOI: 10.1039/c6sc00632a] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 04/08/2016] [Indexed: 12/16/2022] Open
Abstract
Controlling the steric environment in U(η8-C8H6(1,4-SiR3)2)(η5-Cp*)] enables selective formation of either mononuclear U(v) or dinuclear U(iv) oxo and nitrido complexes.
The synthesis and molecular structures of a U(v) neutral terminal oxo complex and a U(v) sodium uranium nitride contact ion pair are described. The synthesis of the former is achieved by the use of tBuNCO as a mild oxygen transfer reagent, whilst that of the latter is via the reduction of NaN3. Both mono-uranium complexes are stabilised by the presence of bulky silyl substituents on the ligand framework that facilitate a 2e– oxidation of a single U(iii) centre. In contrast, when steric hindrance around the metal centre is reduced by the use of less bulky silyl groups, the products are di-uranium, U(iv) bridging oxo and (anionic) nitride complexes, resulting from 1e– oxidations of two U(iii) centres. SQUID magnetometry supports the formal oxidation states of the reported complexes. Electrochemical studies show that the U(v) terminal oxo complex can be reduced and the [U(iv)O]– anion was accessed via reduction with K/Hg, and structurally characterised. Both the nitride complexes display complex electrochemical behaviour but each exhibits a quasi-reversible oxidation at ca. –1.6 V vs. Fc+/0.
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Affiliation(s)
- Nikolaos Tsoureas
- School of Life Sciences , Division of Chemistry , University of Sussex , Falmer , Brighton , BN1 9QJ , UK .
| | - Alexander F R Kilpatrick
- Chemistry Research Laboratory , Department of Chemistry , University of Oxford , 12 Mansfield Road , OX1 3TA , Oxford , UK
| | - Christopher J Inman
- School of Life Sciences , Division of Chemistry , University of Sussex , Falmer , Brighton , BN1 9QJ , UK .
| | - F Geoffrey N Cloke
- School of Life Sciences , Division of Chemistry , University of Sussex , Falmer , Brighton , BN1 9QJ , UK .
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27
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On the Dehydrocoupling of Alkenylacetylenes Mediated by Various Samarocene Complexes: A Charming Story of Metal Cooperativity Revealing a Novel Dual Metal σ-Bond Metathesis Type of Mechanism (DM|σ-BM). INORGANICS 2015. [DOI: 10.3390/inorganics3040573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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28
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29
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Kefalidis CE, Perrin L, Burns CJ, Berg DJ, Maron L, Andersen RA. Can a pentamethylcyclopentadienyl ligand act as a proton-relay in f-element chemistry? Insights from a joint experimental/theoretical study. Dalton Trans 2015; 44:2575-87. [PMID: 25340677 DOI: 10.1039/c4dt02387k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Isomerisation of buta-1,2-diene to but-2-yne by (Me(5)C(5))(2)Yb is a thermodynamically favourable reaction, with the Δ(r)G° estimated from experimental data at 298 K to be -3.0 kcal mol(-1). It proceeds in hydrocarbon solvents with a pseudo first-order rate constant of 6.4 × 10(-6) s(-1) and 7.4 × 10(-5) s(-1) in C(6)D(12) and C(6)D(6), respectively, at 20 °C. This 1,3-hydrogen shift is formally forbidden by symmetry and has to occur by an alternative pathway. The proposed mechanism for buta-1,2-diene to but-2-yne isomerisation by (Me(5)C(5))(2)Yb involves coordination of methylallene (buta-1,2-diene) to (Me(5)C(5))(2)Yb, and deprotonation of methylallene by one of the Me(5)C(5) ligands followed by protonation of the terminal methylallenyl carbon to yield the known coordination compound (Me(5)C(5))(2)Yb(η(2)-MeC[triple bond, length as m-dash]CMe). Computationally, this mechanism is not initiated by a single electron transfer step, and the ytterbium retains its oxidation state (II) throughout the reactivity. Experimentally, the influence of the metal centre is discussed by comparison with the reaction of (Me(5)C(5))(2)Ca towards buta-1,2-diene, and (Me(5)C(5))(2)Yb with ethylene. The mechanism by which the Me(5)C(5) acts as a proton-relay within the coordination sphere of a metal also rationalises the reactivity of (i) (Me(5)C(5))(2)Eu(OEt(2)) with phenylacetylene, (ii) (Me(5)C(5))(2)Yb(OEt(2)) with phenylphosphine and (iii) (Me(5)C(5))(2)U(NPh)(2) with H(2) to yield (Me(5)C(5))(2)U(HNPh)(2). In the latter case, the computed mechanism is the heterolytic activation of H(2) by (Me(5)C(5))(2)U(NPh)(2) to yield (Me(5)C(5))(2)U(H)(HNPh)(NPh), followed by a hydrogen transfer from uranium back to the imido nitrogen atom using one Me(5)C(5) ligand as a proton-relay. The overall mechanism by which hydrogen shifts using a pentamethylcyclopentadienyl ligand as a proton-relay is named Carambole in reference to carom billiards.
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Affiliation(s)
- Christos E Kefalidis
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, Toulouse 31077, France.
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30
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Batrice RJ, McKinven J, Arnold PL, Eisen MS. Selective Oligomerization and [2 + 2 + 2] Cycloaddition of Terminal Alkynes from Simple Actinide Precatalysts. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00455] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rami J. Batrice
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, 32000, Haifa, Israel
| | - Jamie McKinven
- EaStCHEM
School of Chemistry, University of Edinburgh, Joseph Black Building, The King’s Building, Edinburgh EH9 3FJ, United Kingdom
| | - Polly L. Arnold
- EaStCHEM
School of Chemistry, University of Edinburgh, Joseph Black Building, The King’s Building, Edinburgh EH9 3FJ, United Kingdom
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, 32000, Haifa, Israel
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31
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Karmel ISR, Fridman N, Tamm M, Eisen MS. Mixed Imidazolin-2-iminato–Cp* Thorium(IV) Complexes: Synthesis and Reactivity Toward Oxygen-Containing Substrates. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00273] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Isabell S. R. Karmel
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, Haifa, 32000 Israel
| | - Natalia Fridman
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, Haifa, 32000 Israel
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, Haifa, 32000 Israel
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32
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Schmidt AC, Heinemann FW, Maron L, Meyer K. A Series of Uranium (IV, V, VI) Tritylimido Complexes, Their Molecular and Electronic Structures and Reactivity with CO2. Inorg Chem 2014; 53:13142-53. [DOI: 10.1021/ic5023517] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Anna-Corina Schmidt
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Laurent Maron
- LPCNO, Université de Toulouse, INSA Toulouse, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Karsten Meyer
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
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33
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Karmel ISR, Fridman N, Tamm M, Eisen MS. Mono(imidazolin-2-iminato) Actinide Complexes: Synthesis and Application in the Catalytic Dimerization of Aldehydes. J Am Chem Soc 2014; 136:17180-92. [DOI: 10.1021/ja5091436] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabell S. R. Karmel
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, 32000 Israel
| | - Natalia Fridman
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, 32000 Israel
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, 32000 Israel
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34
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Affiliation(s)
- Douglas R Kindra
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
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35
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Reductive assembly of cyclobutadienyl and diphosphacyclobutadienyl rings at uranium. Nat Commun 2014; 4:2323. [PMID: 23965752 DOI: 10.1038/ncomms3323] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 07/16/2013] [Indexed: 11/08/2022] Open
Abstract
Despite the abundance of f-block-cyclopentadienyl, arene, cycloheptatrienyl and cyclo-octatetraenide complexes, cyclobutadienyl derivatives are unknown in spite of their prevalence in the d-block. Here we report that reductive [2+2]-cycloaddition reactions of diphenylacetylene and (2,2-dimethylpropylidyne)phosphine with uranium(V)-inverted sandwich 10π-toluene tetra-anion complexes results in the isolation of inverted sandwich cyclobutadienyl and diphosphacyclobutadienyl dianion uranium(IV) complexes. Computational analysis suggests that the bonding is predominantly electrostatic. Although the ψ4 molecular orbital in the cyclobutadienyl and diphosphacyclobutadienyl ligands exhibits the correct symmetry for δ-bonding to uranium, the dominant covalent contributions arise from π-bonding involving ψ2 and ψ3 orbital combinations. This contrasts with uranium complexes of larger arenes and cyclo-octatetraenide, where δ-bonding dominates. This suggests that the angular requirements for uranium to bond to a small four-membered ring favours π-bonding, utilizing 5f- instead of 6d-orbitals, over δ-bonding that is favoured with larger ligands, where 6d-orbitals can become involved in the bonding.
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36
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La Pierre HS, Meyer K. Activation of Small Molecules by Molecular Uranium Complexes. PROGRESS IN INORGANIC CHEMISTRY 2014. [DOI: 10.1002/9781118792797.ch05] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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37
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Kefalidis CE, Essafi S, Perrin L, Maron L. Qualitative Estimation of the Single-Electron Transfer Step Energetics Mediated by Samarium(II) Complexes: A “SOMO–LUMO Gap” Approach. Inorg Chem 2014; 53:3427-33. [DOI: 10.1021/ic402837n] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Christos E. Kefalidis
- Université de Toulouse et CNRS, INSA, UPS, CNRS,
UMR 5215, LPCNO, 135 Avenue
de Rangueil, F-31077 Toulouse, France
| | - Stéphanie Essafi
- School of Chemistry and
Centre for Computational Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Lionel Perrin
- Université de Toulouse et CNRS, INSA, UPS, CNRS,
UMR 5215, LPCNO, 135 Avenue
de Rangueil, F-31077 Toulouse, France
| | - Laurent Maron
- Université de Toulouse et CNRS, INSA, UPS, CNRS,
UMR 5215, LPCNO, 135 Avenue
de Rangueil, F-31077 Toulouse, France
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38
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Edelmann FT. Lanthanides and actinides: Annual survey of their organometallic chemistry covering the year 2012. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.11.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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39
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Castro L, Kefalidis CE, McKay D, Essafi S, Perrin L, Maron L. Theoretical treatment of one electron redox transformation of a small molecule using f-element complexes. Dalton Trans 2014; 43:12124-34. [DOI: 10.1039/c4dt01002g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT calculations can provide useful insights into low-valent f-element single electron transfer reactivity.
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Affiliation(s)
| | | | - David McKay
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh, UK
| | - Stéphanie Essafi
- School of Chemistry and Centre for Computational Chemistry
- University of Bristol
- Bristol BS8 1TS, UK
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40
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Kefalidis CE, Frey ASP, Roe SM, Cloke FGN, Maron L. Formation of cyanates in low-valent uranium chemistry: a synergistic experimental/theoretical study. Dalton Trans 2014; 43:11202-8. [DOI: 10.1039/c4dt00618f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyanate formation appears to occur at a monometallic species but is also shown to induce possible formation of a mix-valence complex.
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Affiliation(s)
| | - Alistair S. P. Frey
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, UK
| | - S. Mark Roe
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, UK
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41
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Kefalidis CE, Perrin L, Maron L. Preliminary Theoretical Insights into SmI2-Mediated Reactions: Activation of Ketones in THF. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300288] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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