1
|
Lyubov DM, Zakaria H, Nelyubina YV, Aysin RR, Bukalov SS, Trifonov AA. Ca(II) and Yb(II) complexes featuring M(C≡C) 4 structural motif: enforced proximity or genuine η 2 -bonding? Chemistry 2024; 30:e202303533. [PMID: 38070175 DOI: 10.1002/chem.202303533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Indexed: 01/12/2024]
Abstract
Bis(carbazolide) complexes M[3,6-tBu2 -1,8-(RC≡C)2 Carb]2 (THF)n (R=SiMe3 , n=0, M=Ca, Yb; R=Ph, n=1, M=Ca, Yb; n=0, M=Yb) were synthesized through transamination reaction of M[N(SiMe3 )2 ]2 (THF)2 with two molar equivalents of carbazoles. The complexes feature M(η2 -C≡C)4 structural motif composed of M(II) ions encapsulated by four acetylene fragments due to atypical for alkaline- and rare-earth metals η2 -interactions with triple C≡C bond. This interaction is evidenced experimentally by X-ray diffraction, Raman spectroscopy in the solid state and by NMR-spectroscopy in the solution. According to QTAIM analysis there are 4 bond critical points (3;-1) between the metal atom and each of the triple bonds, which are connected by a strongly curved, almost T-shaped bond pathway.
Collapse
Affiliation(s)
- Dmitry M Lyubov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Russia, 49 Tropinina str., GSP-445, 603950, Nizhny Novgorod
| | - Hamza Zakaria
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Russia, 49 Tropinina str., GSP-445, 603950, Nizhny Novgorod
- N. I. Lobachevsky State University of Nizhny Novgorod, Gagarina Avenue 23, 603950, Nizhny Novgorod, Russia
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Gagarina Avenue 23, 603950, Nizhny Novgorod, Russia
- 28 Vavilova str., 119334, Moscow, Russia
| | - Rinat R Aysin
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Gagarina Avenue 23, 603950, Nizhny Novgorod, Russia
- 28 Vavilova str., 119334, Moscow, Russia
| | - Sergey S Bukalov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Gagarina Avenue 23, 603950, Nizhny Novgorod, Russia
- 28 Vavilova str., 119334, Moscow, Russia
| | - Alexander A Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Russia, 49 Tropinina str., GSP-445, 603950, Nizhny Novgorod
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Gagarina Avenue 23, 603950, Nizhny Novgorod, Russia
- 28 Vavilova str., 119334, Moscow, Russia
| |
Collapse
|
2
|
Shafi Z, Gibson JK. Organolanthanide Complexes Containing Ln-CH 3 σ-bonds: Unexpectedly Similar Hydrolysis Rates for Trivalent and Tetravalent Organocerium. Inorg Chem 2023; 62:18399-18413. [PMID: 37910232 DOI: 10.1021/acs.inorgchem.3c02287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
We report the gas-phase preparation, isolation, and reactivity of a series of organolanthanides featuring the Ln-CH3 bond. The complexes are formed by decarboxylating anionic lanthanide acetates to form trivalent [LnIII(CH3)(CH3CO2)3]- (Ln = La, Ce, Pr, Nd, Sm, Tb, Tm, Yb, Lu), divalent [EuII(CH3)(CH3CO2)2]-, and the first examples of tetravalent organocerium complexes featuring CeIV-Calkyl σ-bonds: [CeIV(O)(CH3)(CH3CO2)2]- and [CeIV(O)(CH3)(NO3)2]-. Attempts to isolate PrIV-CH3 and TbIV-CH3 were unsuccessful; however, fragmentation patterns reveal that the oxidation of LnIII to a LnIV-oxo-acetate complex is more favorable for Ln = Pr than for Ln = Tb. The rate of Ln-CH3 hydrolysis is a measure of bond stability, and it decreases from LaIII-CH3 to LuIII-CH3, with increasing steric crowding for smaller Ln stabilizing the harder Ln-CH3 bond against hydrolysis. [EuII(CH3)(CH3CO2)2]- engages in a much faster hydrolysis versus LnIII-CH3. The surprising observation of similar hydrolysis rates for CeIV-CH3 and CeIII-CH3 is discussed with respect to sterics, the oxo ligand, and bond covalency in σ-bonded organolanthanides.
Collapse
Affiliation(s)
- Ziad Shafi
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - John K Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| |
Collapse
|
3
|
Sengupta S, Schüler P, Liebing P, Westerhausen M. Synthesis of Sterically Encumbered Alkaline-Earth Metal Amides Applying the In Situ Grignard Reagent Formation. Chemistry 2023; 29:e202300035. [PMID: 36734181 DOI: 10.1002/chem.202300035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/04/2023]
Abstract
Magnesium and calcium are too inert to deprotonate amines directly. For the synthesis of bulky amides alternative strategies are required and in the past, N-bound trialkylsilyl groups have been used to ease metalation reactions. The in situ Grignard reagent formation in stirred suspensions of magnesium or calcium with hydryl halide and imine in THF allows the synthesis of a plethora of amides with bulky silyl-free substituents. Ball milling protocols partially favor competitive side reactions such as aza-pinacol coupling reactions. Calcium is the advantageous choice for the in situ Grignard reagent formation and subsequent addition onto the imines yielding bulky calcium bis(amides) whereas the stronger reducing heavier alkaline-earth metals strontium and barium are less selective and hence, the aza-pinacol coupling reaction becomes competitive. Exemplary, the solid-state molecular structures of [(Et2 O)Mg(N(Ph)(CHPh2 )2 ] and [(Et2 O)2 Ca(N(Ph)(CHPh2 )2 ] have been determined.
Collapse
Affiliation(s)
- Simon Sengupta
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Philipp Schüler
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Phil Liebing
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| |
Collapse
|
4
|
Mortis A, Maichle-Mössmer C, Anwander R. Distinct Reactivity of Trimethylytterbium toward AlMe 3 and GaMe 3 : Synthesis of Donor-Stabilized Dimethylytterbium. Chemistry 2023; 29:e202203824. [PMID: 36688627 DOI: 10.1002/chem.202203824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/13/2023] [Accepted: 01/23/2023] [Indexed: 01/24/2023]
Abstract
Me3 TACN (1,4,7-trimethyl-1,4,7-triazacyclononane)-stabilized trimethylytterbium was obtained via a salt-metathesis protocol employing [(Me3 TACN)YbCl3 ] and methyllithium. Complex [(Me3 TACN)YbMe3 ] seems not to engage in redox chemistry with potassium graphite and is thermally quite stable in the solid state. Treatment of trivalent [(Me3 TACN)YbMe3 ] with 3 equiv. of AlMe3 afforded divalent tetramethylaluminate complex [(Me3 TACN)Yb(AlMe4 )2 ]. The reaction of [(Me3 TACN)YbMe3 ] with GaMe3 in THF gave trivalent ion pair [(Me3 TACN)YbMe2 (thf)][GaMe4 ], which is susceptible to reduction with KC8 . The thermally very labile divalent [(Me3 TACN)YbMe(μ-Me)]2 is the first discrete donor adduct of a divalent dimethyl rare-earth-metal complex.
Collapse
Affiliation(s)
- Alexandros Mortis
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| |
Collapse
|
5
|
Taranenko GR, Selikhov AN, Nelyubina YV, Trifonov AA. Helicate tris(aryl)carbinolates bearing pendant NR2 donors – a new family of supporting ligands for the synthesis of Sc3+ alkyl complexes. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Schüler P, Sengupta S, Koch A, Görls H, Krieck S, Westerhausen M. In situ Grignard Metalation Method, Part II: Scope of the One-Pot Synthesis of Organocalcium Compounds. Chemistry 2022; 28:e202201897. [PMID: 35912418 PMCID: PMC9804548 DOI: 10.1002/chem.202201897] [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: 06/20/2022] [Indexed: 01/05/2023]
Abstract
The in situ Grignard Metalation Method (iGMM) is a straightforward one-pot strategy to synthesize alkaline-earth metal amides in multi-gram scale with high yields via addition of bromoethane to an ethereal suspension of a primary or secondary amine and magnesium (Part I) or calcium (Part II). This method is highly advantageous because no activation of calcium is required prior to the reaction. Contrary to the magnesium-based iGMM, there are some limitations, the most conspicuous one is the large influence of steric factors. The preparation of Ca(hmds)2 succeeds smoothly within a few hours with excellent yields opening the opportunity to prepare large amounts of this reagent. Side reactions and transfer of the iGMM to substituted anilines and N-heterocycles as well as other H-acidic substrates such as cyclopentadienes are studied. Bulky amidines cannot be converted directly to calcium amidinates via the iGMM but stoichiometric calciation with Ca(hmds)2 enables their preparation.
Collapse
Affiliation(s)
- Philipp Schüler
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Simon Sengupta
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Alexander Koch
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Sven Krieck
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| |
Collapse
|
7
|
Zhao L, Deng P, Gong X, Kang X, Cheng J. Regioselective C–H Alkylation of Aromatic Ethers with Alkenes by a Half-Sandwich Calcium Catalyst. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lanxiao Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625, Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Peng Deng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625, Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xun Gong
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625, Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaohui Kang
- College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Jianhua Cheng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625, Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230026, China
| |
Collapse
|
8
|
Schüler P, Krieck S, Görls H, Liebing P, Westerhausen M. Sterically shielded primary anilides of the alkaline-earth metals of the type (thf) nAe(NH-Ar*) 2 (Ae = Mg, Ca, Sr, and Ba; Ar* = bulky aryl). Dalton Trans 2022; 51:8461-8471. [PMID: 35603695 DOI: 10.1039/d2dt01121b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Metalation of 2,4,6-triphenylphenylamine (H2N-C6H2-2,4,6-Ph3, 1a) and 4-methyl-2,6-bis(diphenylmethyl)aniline (2,6-bis(diphenylmethyl)-p-toluidine, H2N-C6H2-4-Me-2,6-(CHPh2)2, 2a) with dibutylmagnesium and Ae[N(SiMe3)2]2 with a stoichiometric 1 : 2 ratio in THF at room temperature yields the corresponding primary anilides [(thf)nAe{N(H)-C6H2-2,4,6-Ph3}2] (Ae/n = Mg/2 (1b), Ca/2 (1c), Sr/3 (1d), and Ba/3 (1e)) and [(thf)nAe{N(H)-C6H2-4-Me-2,6-(CHPh2)2}2] (Ae/n = Mg/2 (2b), Ca/3 (2c) and Sr/2 (2d)), respectively. The 1 : 1 reaction of Mg(n/sBu)2 and MgPh2 with 2a leads to the formation of heteroleptic [(thf)2Mg(R){N(H)-C6H2-4-Me-2,6-(CHPh2)2}] (R = n/sBu (2bBu), Ph (2bPh)). At 50 °C, the strontium complex 2d liberates one equivalent of 2avia intramolecular deprotonation of the triarylmethyl functionality yielding dinuclear [(thf)2Sr{N(H)-C6H2-4-Me-2-(CPh2)-6-(CHPh2)2}]2 (2d'). The barium compound is significantly more reactive and regardless of applied stoichiometry the isotypic barium congener [(thf)2Ba{N(H)-C6H2-4-Me-2-(CPh2)-6-(CHPh2)2}]2 (2e') forms. The molecular structures of 1c, 2d, 2d', and 2e' are stabilized by metal-phenyl π-interactions.
Collapse
Affiliation(s)
- Philipp Schüler
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
| | - Sven Krieck
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
| | - Phil Liebing
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
| |
Collapse
|
9
|
Shephard ACG, Daniels DP, Deacon GB, Guo Z, Jaroschik F, Junk PC. Selective carbon-phosphorus bond cleavage: expanding the toolbox for accessing bulky divalent lanthanoid sandwich complexes. Chem Commun (Camb) 2022; 58:4344-4347. [PMID: 35293913 DOI: 10.1039/d2cc00698g] [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 synthesis of two new tetra- and penta-phenycyclopentadienyldiphenylphosphine pro-ligands which readily undergo selective C-P bond cleavage has allowed for the facile synthesis of bulky divalent octa- and deca-phenylmetallocenes of europium, ytterbium and samarium.
Collapse
Affiliation(s)
- Angus C G Shephard
- College of Science & Engineering, James Cook University, Townsville, QLD, 4811, Australia.
| | - Daisy P Daniels
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Glen B Deacon
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Zhifang Guo
- College of Science & Engineering, James Cook University, Townsville, QLD, 4811, Australia.
| | | | - Peter C Junk
- College of Science & Engineering, James Cook University, Townsville, QLD, 4811, Australia.
| |
Collapse
|
10
|
Denisenko YG, Sedykh AE, Oreshonkov AS, Molokeev MS, Azarapin NO, Sal'nikova EI, Chimitova OD, Andreev OV, Razumkova IA, Müller‐Buschbaum K. Europium (II) Sulfate EuSO
4
: Synthesis Methods, Crystal and Electronic Structure, Luminescence Properties. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuriy G. Denisenko
- Department of General and Special Chemistry Industrial University of Tyumen Tyumen 625000 Russia
- Institute of Inorganic and Analytical Chemistry Justus-Liebig-University of Giessen 35392 Giessen Germany
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
| | - Alexander E. Sedykh
- Institute of Inorganic and Analytical Chemistry Justus-Liebig-University of Giessen 35392 Giessen Germany
| | - Aleksandr S. Oreshonkov
- Laboratory of Molecular Spectroscopy Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk 660036 Russia
- School of Engineering and Construction Siberian Federal University Krasnoyarsk 660041 Russia
| | - Maxim S. Molokeev
- Institute of Engineering Physics and Radioelectronics Siberian Federal University Krasnoyarsk 660041 Russia
- Laboratory of Crystal Physics Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk 660036 Russia
- Research and Development Department Kemerovo State University Kemerovo 650000 Russia
| | - Nikita O. Azarapin
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
| | - Elena I. Sal'nikova
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
- Research Department Northern Trans-Ural Agricultural University Tyumen 625003 Russia
| | | | - Oleg V. Andreev
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
- Laboratory of the Chemistry of Rare Earth Compounds Institute of Solid State Chemistry, UB RAS Ekaterinburg 620137 Russia
| | - Illaria A. Razumkova
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
| | - Klaus Müller‐Buschbaum
- Institute of Inorganic and Analytical Chemistry Justus-Liebig-University of Giessen 35392 Giessen Germany
- Center for Materials Research (LaMa) Justus-Liebig-University of Giessen Heinrich-Buff-Ring 16 35392 Gießen Germany
| |
Collapse
|
11
|
Shi X, Rajeshkumar T, Maron L, Cheng J. CO, CO 2 and CS 2 activation by divalent ytterbium hydrido complexes. Chem Commun (Camb) 2022; 58:1362-1365. [PMID: 34989379 DOI: 10.1039/d1cc06449e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Treatment of a divalent ytterbium hydride complex [(TpAd,iPr)Yb(H)(THF)] (TpAd,iPr = hydrotris(3-adamantyl-5-isopropyl-pyrazolyl)borate) (1) with CO, CO2 and CS2 resulted in the formation of a divalent ytterbium ethenediolate complex [(TpAd,iPr)Yb]2(cis-OCHCHO) (2), a formate complex [(TpAd,iPr)Yb(κ2-O2CH)(THF)] (3), and a trivalent ytterbium ethenetetrathiolate complex [(TpAd,iPr)YbIII]2(C2S4) (4), respectively. DFT calculations were carried out to elucidate the reaction profiles of complexes 3 and 4.
Collapse
Affiliation(s)
- Xianghui Shi
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry, Chinese Academy of Sciences No. 5625, Renmin Street, Changchun 130022, China.
| | - Thayalan Rajeshkumar
- LPCNO, CNRS & INSA, UPS, Université de Toulouse 135 Avenue de Rangueil, Toulouse 31077, France.
| | - Laurent Maron
- LPCNO, CNRS & INSA, UPS, Université de Toulouse 135 Avenue de Rangueil, Toulouse 31077, France.
| | - Jianhua Cheng
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry, Chinese Academy of Sciences No. 5625, Renmin Street, Changchun 130022, China. .,University of Science and Technology of China Hefei, Anhui 230026, China
| |
Collapse
|
12
|
Khristolyubov DO, Lyubov DM, Cherkasov AV, Fukin GK, Trifonov AA. Reactions of alkali metal diphenylmethanides [(3,5-Bu2t-2-MeO-C6H2)2CH]M (M = Li, K) with LnCl3. The synthesis and structure of the complex [(3,5-Bu2t-2-MeO-C6H2)2CH]2ScCl. Russ Chem Bull 2022. [DOI: 10.1007/s11172-021-3322-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
13
|
Shi X, Deng P, Rajeshkumar T, Zhao L, Maron L, Cheng J. A mononuclear divalent ytterbium hydrido complex supported by a super-bulky scorpionate ligand. Chem Commun (Camb) 2021; 57:10047-10050. [PMID: 34505601 DOI: 10.1039/d1cc04488e] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The first mononuclear divalent ytterbium hydride complex [(TpAd,iPr)Yb(H)(THF)] (TpAd,iPr = hydrotris(3-adamantyl-5-isopropyl-pyrazolyl)borate) (2) bearing a terminal hydrido ligand was obtained by hydrogenolysis of the benzyl precursor in hexane. Complex 2 exhibited two different reaction patterns towards allenes: Yb-H addition with cyclohexylallene and deprotonation of 1,1-dimethylallene.
Collapse
Affiliation(s)
- Xianghui Shi
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry, Chinese Academy of Sciences No. 5625, Renmin Street, Changchun 130022, China.
| | - Peng Deng
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry, Chinese Academy of Sciences No. 5625, Renmin Street, Changchun 130022, China. .,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Thayalan Rajeshkumar
- LPCNO, CNRS & INSA, UPS, Université de Toulouse 135 Avenue de Rangueil, 31077 Toulouse, France.
| | - Lanxiao Zhao
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry, Chinese Academy of Sciences No. 5625, Renmin Street, Changchun 130022, China. .,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Laurent Maron
- LPCNO, CNRS & INSA, UPS, Université de Toulouse 135 Avenue de Rangueil, 31077 Toulouse, France.
| | - Jianhua Cheng
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry, Chinese Academy of Sciences No. 5625, Renmin Street, Changchun 130022, China. .,University of Science and Technology of China, Hefei, Anhui 230026, China
| |
Collapse
|
14
|
Selikhov AN, Lapshin IV, Cherkasov AV, Fukin GK, Trifonov AA. Sandwich and Half-Sandwich Ln(II) (Ln = Sm, Yb) Complexes with Bulky Fluorenyl Ligands. Competitive Abstraction of H or SiMe3 from 2,7-tBu2-9-SiMe3-Fluorene by an Amido Anion. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Alexander N. Selikhov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 603950 Nizhny Novgorod, Russia
- Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova Street 28, 119334 Moscow, Russia
| | - Ivan V. Lapshin
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 603950 Nizhny Novgorod, Russia
| | - Anton V. Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 603950 Nizhny Novgorod, Russia
| | - Georgy K. Fukin
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 603950 Nizhny Novgorod, Russia
| | - Alexander A. Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 603950 Nizhny Novgorod, Russia
- Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova Street 28, 119334 Moscow, Russia
| |
Collapse
|
15
|
Selikhov AN, Cherkasov AV, Nelyubina YV, Trifonov AA. Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.04.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
16
|
Selikhov AN, Cherkasov AV, Nelyubina YV, Trifonov AA. Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|