1
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Mandel MJ, Krieck S, Görls H, Westerhausen M. Bulky Hybrid
C‐
Scorpionate/Amidinate Complexes of Lithium and Zinc. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Miles J. Mandel
- Institute of Inorganic and Analytical Chemistry Chair of Inorganic Chemistry I Friedrich Schiller University Jena Humboldtstraße 8 07743 Jena Germany
| | - Sven Krieck
- Institute of Inorganic and Analytical Chemistry Chair of Inorganic Chemistry I Friedrich Schiller University Jena Humboldtstraße 8 07743 Jena Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry Chair of Inorganic Chemistry I Friedrich Schiller University Jena Humboldtstraße 8 07743 Jena Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry Chair of Inorganic Chemistry I Friedrich Schiller University Jena Humboldtstraße 8 07743 Jena Germany
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2
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Westerhausen M, Mandel MJ, Müller C, Görls H, Krieck S. Metalation of Aryl‐bis(3‐alkyl‐5‐methylpyrazol‐1‐yl)methane (Alkyl = Me, Ad; Aryl = Ph, C6H4‐2‐OH) with NaN(SiMe3)2, KN(SiMe3)2, and Ca{N(SiMe3)2}2. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Miles J. Mandel
- Friedrich-Schiller-Universität Jena: Friedrich-Schiller-Universitat Jena Institute of Inorganic and Analytical Chemistry GERMANY
| | - Christoph Müller
- Friedrich Schiller University Jena: Friedrich-Schiller-Universitat Jena Institute of Inorganic and Analytical Chemistry GERMANY
| | - Helmar Görls
- Friedrich Schiller University Jena: Friedrich-Schiller-Universitat Jena Institute of Inorganic and Analytical Chemistry GERMANY
| | - Sven Krieck
- Friedrich-Schiller-Universität Jena: Friedrich-Schiller-Universitat Jena Institute of Inorganic and Analytical Chemistry GERMANY
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3
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Fernández-Baeza J, Sánchez-Barba LF, Lara-Sánchez A, Sobrino S, Martínez-Ferrer J, Garcés A, Navarro M, Rodríguez AM. NNC-Scorpionate Zirconium-Based Bicomponent Systems for the Efficient CO 2 Fixation into a Variety of Cyclic Carbonates. Inorg Chem 2020; 59:12422-12430. [PMID: 32811145 DOI: 10.1021/acs.inorgchem.0c01532] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new derivatives of the bis(3,5-dimethylpyrazol-1-yl)methane modified by introduction of organosilyl groups on the central carbon atom, one of which bearing a chiral fragment, have been easily prepared. We verified the potential utility of these compounds through the reaction with [Zr(NMe2)4] for the preparation of novel zirconium complexes in which an ancillary bis(pyrazol-1-yl)methanide acts as a robust monoanionic tridentate scorpionate in a κ3-NNC chelating mode, forming strained four-membered heterometallacycles. These κ3-NNC-scorpionate zirconium amides were investigated as catalysts in combination with tetra-n-butylammonium bromide as cocatalyst for CO2 fixation into five-membered cyclic carbonate products. The study has led to the development of an efficient zirconium-based bicomponent system for the selective cycloaddition reaction of CO2 with epoxides. Kinetics investigations confirmed apparent first-order dependence on the catalyst and cocatalyst concentrations. In addition, this system displays very broad substrate scope, including mono- and disubstituted substrates, as well as the challenging biorenewable terpene derived limonene oxide, under mild and solvent-free conditions.
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Affiliation(s)
- Juan Fernández-Baeza
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Campus Universitario, 13071-Ciudad Real, Spain
| | - Luis F Sánchez-Barba
- Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles-28933-Madrid, Spain
| | - Agustín Lara-Sánchez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Campus Universitario, 13071-Ciudad Real, Spain
| | - Sonia Sobrino
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Campus Universitario, 13071-Ciudad Real, Spain
| | - Jaime Martínez-Ferrer
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Campus Universitario, 13071-Ciudad Real, Spain
| | - Andrés Garcés
- Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles-28933-Madrid, Spain
| | - Marta Navarro
- Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles-28933-Madrid, Spain
| | - Ana M Rodríguez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Campus Universitario, 13071-Ciudad Real, Spain
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4
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Wagner HE, Hohnstein S, Schußmann MG, Steppe LA, Breher F. Phosphine-functionalised tris(pyrazolyl)methane ligands and their mono- and heterobimetallic complexes. Dalton Trans 2019; 48:15397-15407. [PMID: 31180415 DOI: 10.1039/c9dt02057h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, characterisation and reactivity of new phosphine-functionalised tris(pyrazolyl)methane ligands (TpmPR2, 2a-c, with R = Ph, nBu, iPr) are presented. The reaction of 2a-c with [Rh(CO)2Cl]2 furnished N,P-heterochelate carbonyl complexes (3a-c), which were used to quantify the donor abilities of the ligands via IR spectroscopy. The coordination flexibility was demonstrated by treating representative members of this new ligand class with [CpRu(acn)3][PF6] (acn = acetonitrile), [(tht)AuCl] (tht = tetrahydrothiophene) and [Pd(allyl)Cl]2 providing either a N,N,P-heteroscorpionate complex (4) or the P-coordinated complexes (5,6) without any involvement of the pyrazolyl entities. With 2a and [Pd(cod)Cl2], another P,N-heterochelate complex (7) was obtained, which served as a precursor for a heterobimetallic complex containing palladium and copper (8). Detailed NMR spectroscopic and X-ray crystallographic investigations have been performed on all new complexes.
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Affiliation(s)
- Hanna E Wagner
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Silvia Hohnstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Max G Schußmann
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Lukas A Steppe
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Frank Breher
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
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5
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Roa AE, Salazar V, Mendoza-Espinosa D, Paneque M, Rodríguez-Diéguez A, Rodríguez AM, Tejeda J, Castro-Osma JA, Otero A, Lara-Sánchez A. Study of the Coordination Modes of Hybrid NNCp Cyclopentadienyl/Scorpionate Ligands in Ir Compounds. Inorg Chem 2019; 58:900-908. [DOI: 10.1021/acs.inorgchem.8b03030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arián E. Roa
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, 42039 Pachuca de Soto, Hidalgo, Mexico
- Centro de Investigación en Química Aplicada, Unidad Monterrey, Alianza Sur No. 204 Parque de Innovación e Investigación Tecnológica (PIIT), 66629 Apodaca, Nuevo León, Mexico
| | - Verónica Salazar
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, 42039 Pachuca de Soto, Hidalgo, Mexico
| | - Daniel Mendoza-Espinosa
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, 42039 Pachuca de Soto, Hidalgo, Mexico
| | - Margarita Paneque
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avenida de Fuentenueva s/n, 18071 Granada, Spain
| | - Ana M. Rodríguez
- Departamento de Química Inorgánica, Orgánica y Bioquímica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Juan Tejeda
- Departamento de Química Inorgánica, Orgánica y Bioquímica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - José A. Castro-Osma
- Departamento de Química Inorgánica, Orgánica y Bioquímica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Antonio Otero
- Departamento de Química Inorgánica, Orgánica y Bioquímica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Agustín Lara-Sánchez
- Departamento de Química Inorgánica, Orgánica y Bioquímica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
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6
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Flerlage H, Krieck S, Görls H, Westerhausen M. Complexes of Trimethylalane with Bis[bis(pyrazolyl)methyl]-Substituted Ligands. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hannah Flerlage
- 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
| | - Helmar Görls
- 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
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7
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Koch A, Dufrois Q, Wirgenings M, Görls H, Krieck S, Etienne M, Pohnert G, Westerhausen M. Direct Synthesis of Heavy Grignard Reagents: Challenges, Limitations, and Derivatization. Chemistry 2018; 24:16840-16850. [PMID: 30095189 DOI: 10.1002/chem.201803518] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Indexed: 01/14/2023]
Abstract
The direct synthesis of organocalcium compounds (heavy Grignard reagents) by the reduction of organyl halides with activated calcium powder succeeded in a straightforward manner for organic bromides and iodides that are bound at sp2 -hybridized carbon atoms. Extension of this strategy to alkyl halides was very limited, and only the reduction of trialkylsilylmethyl bromides and iodides with activated calcium allowed the isolation of the corresponding heavy Grignard reagents. Substitution of only one hydrogen atom of the methylene moiety by a phenyl or methyl group directed this reduction toward the Wurtz-type coupling and the formation of calcium halide and the corresponding C-C coupling product. The stability of the methylcalcium and benzylcalcium derivatives in ethereal solvents suggests an unexpected reaction behavior of the intermediate organyl halide radical anions. Quantum chemical calculations verify a dependency between the ease of preparative access to organocalcium complexes and the C-I bond lengths of the organyl iodides. The bulkiness of the trialkylsilyl group is of minor importance. Chloromethyltrimethylsilane did not react with activated calcium; however, halogen-exchange reactions allowed the isolation of [Ca(CH2 SiMe3 )(thf)3 (μ-Cl)]2 . Furthermore, the metathetical approach of reacting [Ca(CH2 SiMe3 )I(thf)4 ] with KN(SiMe3 )2 and the addition of N,N,N',N'',N''-pentamethyldiethylenetriamine (pmdeta) allowed the isolation of heteroleptic [CaCH2 SiMe3 {N(SiMe3 )2 }(pmdeta)]. In the reaction of this derivative with phenylsilane, the trimethylsilylmethyl group proved to be more reactive than the bis(trimethylsilyl)amido substituent.
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Affiliation(s)
- Alexander Koch
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstrasse 8, 07743, Jena, Germany
| | - Quentin Dufrois
- LCC, CNRS, UPS, Université de Toulouse, 31077, Toulouse, France
| | - Marino Wirgenings
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstrasse 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
| | - Michel Etienne
- LCC, CNRS, UPS, Université de Toulouse, 31077, Toulouse, France
| | - Georg Pohnert
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstrasse 8, 07743, Jena, Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstrasse 8, 07743, Jena, Germany
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8
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Forosenko NV, Basalov IV, Cherkasov AV, Fukin GK, Shubina ES, Trifonov AA. Amido Ca(ii) complexes supported by Schiff base ligands for catalytic cross-dehydrogenative coupling of amines with silanes. Dalton Trans 2018; 47:12570-12581. [DOI: 10.1039/c8dt01130c] [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
Heteroleptic Ca(ii) amides coordinated by multidentate phenolato ligands proved to be efficient catalysts for catalytic cross-dehydrogenative coupling of amines with silanes.
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Affiliation(s)
- Natalia V. Forosenko
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- GSP-445, Russia
| | - Ivan V. Basalov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- GSP-445, Russia
| | - Anton V. Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- GSP-445, Russia
| | - Georgy K. Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- GSP-445, Russia
| | - Elena S. Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences
- Moscow
- GSP-1, Russia
| | - Alexander A. Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- GSP-445, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences
- Moscow
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9
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Rajiv Singh A, Rawat NS, Sanjeeta Devi P, Lonibala R. Hydrothermal synthesis of a coordination polymer[Ca II (5-AIP)(DMA)] n and its application in epoxidation of various organic substrates. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Koch A, Wirgenings M, Krieck S, Görls H, Pohnert G, Westerhausen M. Hydrocarbon-Soluble Bis(trimethylsilylmethyl)calcium and Calcium–Iodine Exchange Reactions at sp2-Hybrized Carbon Atoms. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00592] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander Koch
- Institute of Inorganic and Analytical Chemistry and ‡Institute of Inorganic and Analytical
Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
| | - Marino Wirgenings
- Institute of Inorganic and Analytical Chemistry and ‡Institute of Inorganic and Analytical
Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
| | - Sven Krieck
- Institute of Inorganic and Analytical Chemistry and ‡Institute of Inorganic and Analytical
Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry and ‡Institute of Inorganic and Analytical
Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
| | - Georg Pohnert
- Institute of Inorganic and Analytical Chemistry and ‡Institute of Inorganic and Analytical
Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry and ‡Institute of Inorganic and Analytical
Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
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11
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Alkorta I, Claramunt RM, Díez-Barra E, Elguero J, de la Hoz A, López C. The organic chemistry of poly(1 H -pyrazol-1-yl)methanes. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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13
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Krieck S, Koch A, Hinze K, Müller C, Lange J, Görls H, Westerhausen M. s-Block Metal Complexes with Bis- and Tris(pyrazolyl)methane and -methanide Ligands. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501263] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Sven Krieck
- 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
| | - Kay Hinze
- Institute of Inorganic and Analytical Chemistry; Friedrich Schiller University Jena; Humboldtstrasse 8 07743 Jena Germany
| | - Christoph Müller
- Institute of Inorganic and Analytical Chemistry; Friedrich Schiller University Jena; Humboldtstrasse 8 07743 Jena Germany
| | - Juliane Lange
- 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
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry; Friedrich Schiller University Jena; Humboldtstrasse 8 07743 Jena Germany
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14
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Köhler M, Koch A, Görls H, Westerhausen M. Trimethylsilylmethylcalcium Iodide, an Easily Accessible Grignard-Type Reagent of a Heavy Alkaline Earth Metal. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00956] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mathias Köhler
- Institute of Inorganic and
Analytical Chemistry, Friedrich-Schiller-University Jena, Humboldtstraße
8, D-07743 Jena, Germany
| | - Alexander Koch
- 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
| | - Matthias Westerhausen
- Institute of Inorganic and
Analytical Chemistry, Friedrich-Schiller-University Jena, Humboldtstraße
8, D-07743 Jena, Germany
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