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Kaiser M, Winkler L, Hinz A. Complexes of 3d Metals with a Bulky Carbazolyl Ligand. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Michelle Kaiser
- Karlsruhe Institute of Technology (KIT) Institute of Inorganic Chemistry (AOC) Engesserstr.15, Geb. 30.45, 76131 Karlsruhe, Germany
| | - Lucas Winkler
- Karlsruhe Institute of Technology (KIT) Institute of Inorganic Chemistry (AOC) Engesserstr.15, Geb. 30.45, 76131 Karlsruhe, Germany
| | - Alexander Hinz
- Karlsruhe Institute of Technology (KIT) Institute of Inorganic Chemistry (AOC) Engesserstr.15, Geb. 30.45, 76131 Karlsruhe, Germany
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Selikhov AN, Pechenkina PV, Cherkasov AV, Nelyubina YV, Kovylina TA, Trifonov AA. π-Carbazolyl supported bis(alkyl) complexes of Sc, Y and La for α-olefin polymerization and hydrogenation. Dalton Trans 2022; 51:9127-9137. [PMID: 35642588 DOI: 10.1039/d2dt01188c] [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 series of new half-sandwich bis(alkyl) rare-earth metal complexes coordinated by a sterically demanding 1,3,6,8-tetra-tert-butyl-carbazol-9-yl ligand [tBu4Carb]La(CH2C6H5)2(THF) (1-La), [tBu4Carb]Ln(o-NMe2C6H4CH2)2 (Ln = Sc (2-Sc), Y (2-Y), La (2-La), [tBu4Carb]Ln(CH2SiMe3)2(THF) (Ln = Sc (3-Sc), Y (3-Y)), were synthesized. 1-La, 2-La, and 2-Y were prepared by an alkane elimination protocol, while 2-Sc, 3-Sc, and 3-Y became accessible only when salt metathesis reactions of tBu4CarbK with R2Ln(THF)n+[BPh4]- were employed. X-ray analysis revealed that in all complexes the carbazolyl ligand exhibits π-coordination with metal ions. 2-Sc and 3-Sc when activated with [Ph3C][B(C6F5)4] demonstrate excellent activity in α-olefin (octene-1, nonene-1, decene-1 and 1,1-diphenyl-but-1-ene) polymerization. When H2 was used as a chain transfer agent (1 bar, rt) in the presence of 3-Sc/[Ph3C][B(C6F5)4] or 2-Y, 2-La olefin hydrogenation occurred with quantitative conversion.
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Affiliation(s)
- Alexander N Selikhov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603137, 49 Tropinina str., Nizhny Novgorod, Russia GSP-445. .,A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova str., 119991, Moscow, GSP-1, Russia
| | - Polina V Pechenkina
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603137, 49 Tropinina str., Nizhny Novgorod, Russia GSP-445.
| | - Anton V Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603137, 49 Tropinina str., Nizhny Novgorod, Russia GSP-445.
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova str., 119991, Moscow, GSP-1, Russia
| | - Tatyana A Kovylina
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603137, 49 Tropinina str., Nizhny Novgorod, Russia GSP-445.
| | - Alexander A Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603137, 49 Tropinina str., Nizhny Novgorod, Russia GSP-445. .,A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova str., 119991, Moscow, GSP-1, Russia
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Nolla‐Saltiel R, Geer AM, Taylor LJ, Churchill O, Davies ES, Lewis W, Blake AJ, Kays DL. Hydrophosphination of Activated Alkenes by a Cobalt(I) Pincer Complex. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000514] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Ana M. Geer
- School of ChemistryUniversity of Nottingham University Park Nottingham NG7 2RD UK
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)CSIC Universidad de Zaragoza Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Laurence J. Taylor
- School of ChemistryUniversity of Nottingham University Park Nottingham NG7 2RD UK
| | - Olivia Churchill
- School of ChemistryUniversity of Nottingham University Park Nottingham NG7 2RD UK
| | - E. Stephen Davies
- School of ChemistryUniversity of Nottingham University Park Nottingham NG7 2RD UK
| | - William Lewis
- School of ChemistryThe University of Sydney F11, Eastern Ave Sydney NSW 2006 Australia
| | - Alexander J. Blake
- School of ChemistryUniversity of Nottingham University Park Nottingham NG7 2RD UK
| | - Deborah L. Kays
- School of ChemistryUniversity of Nottingham University Park Nottingham NG7 2RD UK
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Selikhov AN, Shavyrin AS, Cherkasov AV, Fukin GK, Trifonov AA. Thermally Stable Half-Sandwich Benzhydryl Ln(II) (Ln = Sm, Yb) Complexes Supported by Sterically Demanding Carbazolyl and Fluorenyl Ligands. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00624] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alexander N. Selikhov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., 603137 Nizhny Novgorod, GSP-445, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova str., 119991 Moscow, GSP-1, Russia
| | - Andrey S. Shavyrin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., 603137 Nizhny Novgorod, GSP-445, Russia
| | - Anton V. Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., 603137 Nizhny Novgorod, GSP-445, Russia
| | - Georgy K. Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., 603137 Nizhny Novgorod, GSP-445, Russia
| | - Alexander A. Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., 603137 Nizhny Novgorod, GSP-445, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova str., 119991 Moscow, GSP-1, Russia
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Nolla-Saltiel R, Geer AM, Lewis W, Blake AJ, Kays DL. Dehydrogenation of dimethylamine-borane mediated by Group 1 pincer complexes. Chem Commun (Camb) 2018; 54:1825-1828. [DOI: 10.1039/c7cc08385h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkali metal carbazolido complexes are precatalysts for the dehydrogenation of Me2NH·BH3, where the cation plays a vital role in the reaction outcome.
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Affiliation(s)
| | - Ana M. Geer
- School of Chemistry
- University of Nottingham
- Nottingham
- UK
| | - William Lewis
- School of Chemistry
- University of Nottingham
- Nottingham
- UK
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Abstract
The development of extremely sterically demanding, monodentate amide ligands facilitates the isolation of main group species with new and highly reactive coordination modes. An outstanding feature of these ligands is the ability to tune their steric demands. Reactivity investigations highlight the potential for small molecule activation chemistry and catalysis for these compounds.
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Ortu F, Moxey GJ, Blake AJ, Lewis W, Kays DL. Tuning coordination in s-block carbazol-9-yl complexes. Chemistry 2015; 21:6949-56. [PMID: 25783772 PMCID: PMC4641456 DOI: 10.1002/chem.201406490] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Indexed: 11/20/2022]
Abstract
1,3,6,8-Tetra-tert-butylcarbazol-9-yl and 1,8-diaryl-3,6-di(tert-butyl)carbazol-9-yl ligands have been utilized in the synthesis of potassium and magnesium complexes. The potassium complexes (1,3,6,8-tBu4carb)K(THF)4 (1; carb = C12H4N), [(1,8-Xyl2-3,6-tBu2carb)K(THF)]2 (2; Xyl = 3,5-Me2C6H3) and (1,8-Mes2-3,6-tBu2carb)K(THF)2 (3; Mes = 2,4,6-Me3C6H2) were reacted with MgI2 to give the Hauser bases 1,3,6,8-tBu4carbMgI(THF)2 (4) and 1,8-Ar2-3,6-tBu2carbMgI(THF) (Ar = Xyl 5, Ar = Mes 6). Structural investigations of the potassium and magnesium derivatives highlight significant differences in the coordination motifs, which depend on the nature of the 1- and 8-substituents: 1,8-di(tert-butyl)-substituted ligands gave π-type compounds (1 and 4), in which the carbazolyl ligand acts as a multi-hapto donor, with the metal cations positioned below the coordination plane in a half-sandwich conformation, whereas the use of 1,8-diaryl substituted ligands gave σ-type complexes (2 and 6). Space-filling diagrams and percent buried volume calculations indicated that aryl-substituted carbazolyl ligands offer a steric cleft better suited to stabilization of low-coordinate magnesium complexes.
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Affiliation(s)
- Fabrizio Ortu
- School of Chemistry, University of Nottingham, University ParkNottingham, NG7 2RD (UK), Fax: (+44) 115-9513555 E-mail:
- School of Chemistry, University of ManchesterManchester M13 9PL (UK)
| | - Graeme J Moxey
- School of Chemistry, University of Nottingham, University ParkNottingham, NG7 2RD (UK), Fax: (+44) 115-9513555 E-mail:
- Research School of Chemistry, Australian National UniversityCanberra, ACT 0200 (Australia)
| | - Alexander J Blake
- School of Chemistry, University of Nottingham, University ParkNottingham, NG7 2RD (UK), Fax: (+44) 115-9513555 E-mail:
| | - William Lewis
- School of Chemistry, University of Nottingham, University ParkNottingham, NG7 2RD (UK), Fax: (+44) 115-9513555 E-mail:
| | - Deborah L Kays
- School of Chemistry, University of Nottingham, University ParkNottingham, NG7 2RD (UK), Fax: (+44) 115-9513555 E-mail:
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Selikhov AN, Cherkasov AV, Fukin GK, Trifonov AA, del Rosal I, Maron L. Amido Analogues of Nonbent Lanthanide (II) and Calcium Metallocenes. Heterolytic Cleavage of π-Bond Ln–Carbazolyl Ligand Promoted by Lewis Base Coordination. Organometallics 2015. [DOI: 10.1021/om500572y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Alexander N. Selikhov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., GSP-445, 630950, Nizhny Novgorod, Russia
- Nizhny Novgorod State University, Gagarina 23, 603950, Nizhny Novgorod, Russia
| | - Anton V. Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., GSP-445, 630950, Nizhny Novgorod, Russia
- Nizhny Novgorod State University, Gagarina 23, 603950, Nizhny Novgorod, Russia
| | - Georgy K. Fukin
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., GSP-445, 630950, Nizhny Novgorod, Russia
- Nizhny Novgorod State University, Gagarina 23, 603950, Nizhny Novgorod, Russia
| | - Alexander A. Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., GSP-445, 630950, Nizhny Novgorod, Russia
- Nizhny Novgorod State University, Gagarina 23, 603950, Nizhny Novgorod, Russia
- Institute of Organoelement Compounds of Russian Academy of Scienes, Vavilova str. 28, 119334, Moscow, Russia
| | - Iker del Rosal
- Université de Toulouse, INSA, UPS, CNRS-UMR5215, LPCNO, Avenue de Rangueil 135, 31077 Toulouse, France
| | - Laurent Maron
- Université de Toulouse, INSA, UPS, CNRS-UMR5215, LPCNO, Avenue de Rangueil 135, 31077 Toulouse, France
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Basalov IV, Roşca SC, Lyubov DM, Selikhov AN, Fukin GK, Sarazin Y, Carpentier JF, Trifonov AA. Divalent heteroleptic ytterbium complexes--effective catalysts for intermolecular styrene hydrophosphination and hydroamination. Inorg Chem 2014; 53:1654-61. [PMID: 24422473 DOI: 10.1021/ic4027859] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New heteroleptic Yb(II)-amide species supported by amidinate and 1,3,6,8-tetra-tert-butylcarbazol-9-yl ligands [2-MeOC6H4NC(tBu)N(C6H3-iPr2-2,6)]YbN(SiMe3)2(THF) (6) and [1,3,6,8-tBu4C12H4N]Yb[N(SiMe3)2](THF)n (n = 1 (7), 2 (8)) were synthesized using the amine elimination approach. Complex 6 features an unusual κ(1)-N,κ(2)-O,η(6)-arene coordination mode of the amidinate ligand onto Yb(II). Complexes 7 and 8 represent the first examples of lanthanide complexes with π-coordination of carbazol-9-yl ligands. Complexes 6 and 7, as well as the amidinate-Yb(II)-amide [tBuC(NC6H3-iPr2-2,6)2]YbN(SiMe3)2(THF) (5), are efficient precatalysts for the intermolecular hydrophosphination and hydroamination of styrene with diphenylphosphine, phenylphosphine, and pyrrolidine to give exclusively the anti-Markovnikov monoaddition product. For both types of reaction, the best performances were observed with carbazol-9-yl complex 7 (TONs up to 92 and 48 mol/mol at 60 °C, respectively).
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Affiliation(s)
- Ivan V Basalov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences , Nizhny Novgorod, Russia
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Armstrong DR, Davidson MG, Garcia-Vivo D, Kennedy AR, Mulvey RE, Robertson SD. Monomerizing Alkali-Metal 3,5-Dimethylbenzyl Salts with Tris(N, N-dimethyl-2-aminoethyl)amine (Me6TREN): Structural and Bonding Implications. Inorg Chem 2013; 52:12023-32. [DOI: 10.1021/ic401777x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David R. Armstrong
- WestCHEM, Department of Pure and Applied
Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, U.K
| | | | | | - Alan R. Kennedy
- WestCHEM, Department of Pure and Applied
Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, U.K
| | - Robert E. Mulvey
- WestCHEM, Department of Pure and Applied
Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, U.K
| | - Stuart D. Robertson
- WestCHEM, Department of Pure and Applied
Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, U.K
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Structural Variations in Coordination Polymers of Sodium and Cesium Dicarboxylates. J Inorg Organomet Polym Mater 2013. [DOI: 10.1007/s10904-013-9963-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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