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Bhandari M, Kaur M, Rawat S, Singh S. Highly Electrophilic Mononuclear Cationic Aluminium Alkoxide Complexes: Syntheses, Reactivity and Catalytic Applications. Chemistry 2023; 29:e202301229. [PMID: 37294029 DOI: 10.1002/chem.202301229] [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: 04/19/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/10/2023]
Abstract
Herein, we report the synthesis of β-diketiminate-supported aluminium complexes bearing terminal alkoxide and mono-thiol functional groups: LAlOMe(Et) (2), LAlOtBu(Et) (3), and LAlSH(Et) (4), (L=[HC{C(Me)N-(2,6-iPr2 C6 H3 )}2 ]). Complexes 2 and 3 are further used as synthons to generate the fascinating cationic aluminium alkoxide complexes, [LAlOMe(μ-OMe)-Al(Et)L][EtB(C6 F5 )3 ] (5), [LAlOMe(OEt2 )][EtB(C6 F5 )3 ] (6), and [LAlOtBu(OEt2 )][EtB(C6 F5 )3 ] (8). These electrophilic cationic species are well characterized by spectroscopic and crystallographic techniques. The assessment of Lewis acidity by the Gutmann-Beckett method revealed superior Lewis acidity of the cations substituted with electron-demanding alkoxy groups in comparison to the known methyl analogue [LAlMe][B(C6 F5 )4 ]. This has been further endorsed by computational calculations to determine the NBO charges and hydride ion affinity for complexes 6 and 8. These complexes are also capable of activating triethylsilane in stoichiometric reactions. The applicability of these complexes has been realized in the hydrosilylation of ethers, carbonyls, and olefines. Additionally, the solid-state structure of a new THF stabilized aluminium halide cation [LAlCl(THF)][B(C6 F5 )4 ] (11) has also been reported.
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Affiliation(s)
- Mamta Bhandari
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar, Mohali, 140306, Punjab, India
| | - Mandeep Kaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar, Mohali, 140306, Punjab, India
| | - Sandeep Rawat
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar, Mohali, 140306, Punjab, India
| | - Sanjay Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar, Mohali, 140306, Punjab, India
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Bag P, Weetman C, Inoue S. Isolierung schwer fassbarer Komplexe mit einer Aluminium-Element-Mehrfachbindung: Am Horizont zeichnet sich eine neue Aluminiumchemie ab. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803900] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Prasenjit Bag
- Department Chemie; WACKER-Institute of Silicon Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstraße 4 85748 Garching bei München Deutschland
| | - Catherine Weetman
- Department Chemie; WACKER-Institute of Silicon Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstraße 4 85748 Garching bei München Deutschland
| | - Shigeyoshi Inoue
- Department Chemie; WACKER-Institute of Silicon Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstraße 4 85748 Garching bei München Deutschland
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Bag P, Weetman C, Inoue S. Experimental Realisation of Elusive Multiple-Bonded Aluminium Compounds: A New Horizon in Aluminium Chemistry. Angew Chem Int Ed Engl 2018; 57:14394-14413. [DOI: 10.1002/anie.201803900] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Prasenjit Bag
- Department of Chemistry; WACKER-Institute of Silicon Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Catherine Weetman
- Department of Chemistry; WACKER-Institute of Silicon Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Shigeyoshi Inoue
- Department of Chemistry; WACKER-Institute of Silicon Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstraße 4 85748 Garching bei München Germany
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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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Hülsmann M, Neumann B, Stammler H, Mitzel NW. Complex Formation of Calcium Bis(tetraethylaluminate) with N‐Donor Ligands. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200453] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Matthias Hülsmann
- Anorganische Chemie und Strukturchemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany, Fax: +49‐521‐106‐6182, http://www.uni‐bielefeld.de/chemie/ac3/ak‐mitzel/start.html
| | - Beate Neumann
- Anorganische Chemie und Strukturchemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany, Fax: +49‐521‐106‐6182, http://www.uni‐bielefeld.de/chemie/ac3/ak‐mitzel/start.html
| | - Hans‐Georg Stammler
- Anorganische Chemie und Strukturchemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany, Fax: +49‐521‐106‐6182, http://www.uni‐bielefeld.de/chemie/ac3/ak‐mitzel/start.html
| | - Norbert W. Mitzel
- Anorganische Chemie und Strukturchemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany, Fax: +49‐521‐106‐6182, http://www.uni‐bielefeld.de/chemie/ac3/ak‐mitzel/start.html
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7
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Successful extrapolation of an f-element synthetic method to the pseudo light lanthanoid, aluminium. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Marchetti F, Pampaloni G. Characterization and thermal activation of adducts of Group 4 tetrahalides with 1,2-dialkoxyalkanes. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.05.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Crimmin MR, Hill MS, Hitchcock PB, Mahon MF. Synthesis of β-diketiminato calcium silylamides and their reactions with triethylaluminium. NEW J CHEM 2010. [DOI: 10.1039/c0nj00042f] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Michel O, Meermann C, Törnroos KW, Anwander R. Alkaline-Earth Metal Alkylaluminate Chemistry Revisited. Organometallics 2009. [DOI: 10.1021/om900342h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olaf Michel
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
| | - Christian Meermann
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
| | - Karl W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
| | - Reiner Anwander
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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11
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Barrett AGM, Crimmin MR, Hill MS, Hitchcock PB, Lomas SL, Mahon MF, Procopiou PA, Suntharalingam K. β-Diketiminato Calcium Acetylides: Synthesis, Solution Dimerization, and Catalytic Carbon−Carbon Bond Formation. Organometallics 2008. [DOI: 10.1021/om800738r] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anthony G. M. Barrett
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K
| | - Mark R. Crimmin
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K
| | - Michael S. Hill
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K
| | - Peter B. Hitchcock
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K
| | - Sarah L. Lomas
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K
| | - Mary F. Mahon
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K
| | - Panayiotis A. Procopiou
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K
| | - Kogularamanan Suntharalingam
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K
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12
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Marchetti F, Pampaloni G, Zacchini S. Unusual room temperature activation of 1,2-dialkoxyalkanes by niobium and tantalum pentachlorides. Dalton Trans 2008:7026-35. [PMID: 19050789 DOI: 10.1039/b810210d] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The outcome of the reactions of MCl(5) (M = Nb, 1a; M = Ta, 1b) with 1,2-dialkoxyalkanes [i.e. MeO(CH(2))(2)OMe (dme), EtO(CH(2))(2)OEt, MeOCH(2)CH(Me)OMe, MeO(CH(2))(2)OCH(2)Cl, MeO(CH(2))(2)O(CH(2))(2)OMe (diglyme)] depends strictly on the stoichiometry. In the 1 : 1 molar ratio reactions, single C-O bond cleavage occurs, resulting in formation of alkyl chloride and of the complexes [upper bond 1 start]MCl(4)[O(R)CH(R')CH(2)O][upper bond 1 end] [M = Nb, R = Me, R' = H, 3a; M = Ta, R = Me, R' = H, 3b; M = Nb, R = Et, R' = H, 5; M = Nb, R = R' = Me, 6; M = Nb, R = CH(2)Cl, R' = H, 7; M = Nb, R = (CH(2))(2)O(Me)NbCl(5), R' = H, 8], which have been characterized spectroscopically. Moreover, minor amounts of the oxo-bridged adducts MOCl(3)(dme)MCl(5) (M = Nb, 4a; M = Ta, 4b) have been isolated in the reactions involving dme. On the other hand, compounds react with two (or more) equivalents of dme mainly via a multiple C-O bond cleavage process, affording MOCl(3)(dme) (M = Nb, 2a; M = Ta, 2b), 1,4-dioxane and methyl chloride. The oxychloride compounds MOCl(3) (M = Nb, 11a; M = Ta, 11b) have been efficiently obtained by addition of TiCl(4) to 2. Compound 2a is reduced in high yield to the Nb(III) species NbCl(3)(dme), 12, upon treatment with SnBu(3)H. The oxychloride NbOCl(3)(diglyme), 9, 1,4-dioxane, CH(3)Cl and the hexachloroniobate salt [MeOCH(2)CH(2)OCH(2)CH(2)O(H)Me][NbCl(6)], 10, have been identified as products of the reaction of 1a with two equivalents of diglyme. The 1 : 2 molar ratio reaction of 1a with MeOCH(2)CH(Me)OMe gives 2,5-dimethyl-1,4-dioxane. Compound 1a reacts with two equivalents of EtO(CH(2))(2)OEt or MeO(CH(2))(2)OCH(2)Cl yielding Cl(CH(2))(2)OCH(2)CH(3) or O(CH(2)Cl)(2) and diglyme, respectively, but not dioxane, suggesting that fragmentation pathways different from that found for dme are operating. The X-ray molecular structures of 4a, 4b and 10 have been determined.
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Affiliation(s)
- Fabio Marchetti
- Università di Pisa, Dipartimento di Chimica e Chimica Industriale, Pisa, Italy
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Krieck S, Görls H, Westerhausen M. Synthesis and molecular structure of hexakis(tetrahydrofuran)calcium bis[trimethyl-(diphenylamino)alanate]. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2008.04.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Fedushkin IL, Lukoyanov AN, Hummert M, Schumann H. C-O Bond Cleavage of Diethyl Ether and Tetrahydrofurane by [(dpp-BIAN)AlI(Et2O)] [dpp-BIAN = 1,2-bis[(2,6-di-iso-propylphenyl)-imino]acenaphthene]. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200700411] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Marchetti F, Pampaloni G, Zacchini S. From 1,2-dialkoxyalkanes to 1,4-dioxanes. A transformation mediated by NbCl5via multiple C–O bond cleavage at room temperature. Chem Commun (Camb) 2008:3651-3. [DOI: 10.1039/b804432e] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Westerhausen M. Recent developments in the field of organic heterobimetallic compounds of the alkaline-earth metals. Dalton Trans 2006:4755-68. [PMID: 17033700 DOI: 10.1039/b609040k] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterobimetallic compounds of the alkaline-earth metals show a wide structural variety with strongly differing reactivity patterns. The combination of magnesium and alkali metal amides yields cyclic molecules with an extreme high reactivity which often are considered as "inverse crowns" with the metal atoms as coordination sites for Lewis bases. In other metallates of the alkaline-earth metals an activation of alkyl groups succeeds. In alkaline-earth metal zincates an inverse coordination of the type M(2)[(mu-R)(2)ZnR](2) is observed and the alkyl groups are in bridging positions between zinc and the s-block metals thus forming a very reactive M-C-Zn three-center-two-electron bond. Furthermore, the metals of the carbon group form alkaline-earth metal-silicon, -germanium and -tin bonds or, in the presence of very strong Lewis bases, even solvent-separated ion pairs. For electronegative substituents at tin an inverse coordination mode such as M[(mu-R)(2)SnR](2) is observed.
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Affiliation(s)
- Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität Jena, August-Bebel-Str. 2, D-07743, Jena, Germany
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17
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Ahmed SA, Hill MS, Hitchcock PB. Synthesis and M−Cγ Hemilability of Group 2 Bis(phosphinimino)methanides. Organometallics 2005. [DOI: 10.1021/om050811h] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shabana A. Ahmed
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K
| | - Michael S. Hill
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K
| | - Peter B. Hitchcock
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K
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Avent AG, Crimmin MR, Hill MS, Hitchcock PB. Dimerization of β-Diketiminato Calcium Complexes through Dihapto-Acetylide Ligation. Organometallics 2005. [DOI: 10.1021/om0490334] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anthony G. Avent
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., and The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K
| | - Mark R. Crimmin
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., and The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K
| | - Michael S. Hill
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., and The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K
| | - Peter B. Hitchcock
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, U.K., and The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, U.K
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Izod K, Liddle ST, Clegg W. Alkyl complexes of strontium and barium: synthesis and structural characterization of [(Me3Si)2(MeOMe2Si)C]2Sr(THF) and [(Me3Si)2(MeOMe2Si)C]2Ba(MeOCH2CH2OMe). J Am Chem Soc 2003; 125:7534-5. [PMID: 12812491 DOI: 10.1021/ja0352404] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Metathesis between either SrI2 or BaI2 and 2 equiv of {(Me3Si)2(MeOMe2Si)C}K in THF yields the novel heavier alkali metal dialkyls {(Me3Si)2(MeOMe2Si)C}2M(L) [M(L) = Sr(THF) (2), Ba(DME) (3) (DME = 1,2-dimethoxyethane)] after recrystallization.
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Affiliation(s)
- Keith Izod
- Chemistry, School of Natural Sciences, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK.
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20
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Synthesis and structure of a gallate of strontium with Sr–C–Ga three-center two-electron bonds. INORG CHEM COMMUN 2003. [DOI: 10.1016/s1387-7003(02)00680-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Westerhausen M. 100 years after grignard: where does the organometallic chemistry of the heavy alkaline Earth metals stand today? Angew Chem Int Ed Engl 2002; 40:2975-7. [PMID: 12203621 DOI: 10.1002/1521-3773(20010817)40:16<2975::aid-anie2975>3.0.co;2-q] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Even a century after the discovery of the Grignard reagents, similar compounds of the heavy alkaline earth metals are still lacking. Owing to the industrial need for such compounds (in particular as anionic polymerization catalysts), the last few years have been marked by a rapid, extensive development which has culminated in the first structurally characterized alkylbarium derivatives such as the crown ether complex of bis(triphenylmethyl)barium (1). hmpt=hexamethylphosphoric acid triamide.
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Affiliation(s)
- M Westerhausen
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstrasse 9 (Haus D), 81377 München, Germany, Fax: (+49) 89-2180-7481.
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Pietrzykowski A, Skrok T, Pasynkiewicz S, Brzoska-Mizgalski M, Zachara J, Anulewicz-Ostrowska R, Suwińska K, Jerzykiewicz LB. Reactions of methyl- and ethylaluminium compounds with alkoxyalcohols. The influence of alkoxyalcohol substituents on the structure of the complexes formed. Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(02)00859-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Westerhausen M, Gückel C, Habereder T, Vogt M, Warchhold M, Nöth H. Synthesis of Strontium and Barium Bis{tris[(trimethylsilyl)methyl]zincates} via the Transmetalation of Bis[(trimethylsilyl)methyl]zinc. Organometallics 2001. [DOI: 10.1021/om0008272] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthias Westerhausen
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 9 (Haus D), D-81377 München, Germany
| | - Christian Gückel
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 9 (Haus D), D-81377 München, Germany
| | - Tassilo Habereder
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 9 (Haus D), D-81377 München, Germany
| | - Martin Vogt
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 9 (Haus D), D-81377 München, Germany
| | - Marcus Warchhold
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 9 (Haus D), D-81377 München, Germany
| | - Heinrich Nöth
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 9 (Haus D), D-81377 München, Germany
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