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Koehne I, Graw N, Teuteberg T, Herbst-Irmer R, Stalke D. Introducing NacNac-Like Bis(4,6-isopropylbenzoxazol-2-yl)methanide in s-Block Metal Coordination. Inorg Chem 2017; 56:14968-14978. [DOI: 10.1021/acs.inorgchem.7b02276] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ingo Koehne
- Institut für
Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Nico Graw
- Institut für
Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Thorsten Teuteberg
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
| | - Regine Herbst-Irmer
- Institut für
Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Dietmar Stalke
- Institut für
Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
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2
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Koehne I, Bachmann S, Niklas T, Herbst-Irmer R, Stalke D. A Novel Bulky Heteroaromatic-Substituted Methanide Mimicking NacNac: Bis(4,6-tert-butylbenzoxazol-2-yl)methanide in s-Block Metal Coordination. Chemistry 2017; 23:13141-13149. [PMID: 28833616 DOI: 10.1002/chem.201702378] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Indexed: 11/07/2022]
Abstract
A novel bulky bis(4,6-tBu-benzoxazol-2-yl)methane ligand was synthesized in a straightforward three-step synthesis. The corresponding complexes [Li{(4,6-tBu-NCOC6 H2 )2 CH}THF], [K{η5 -(4,6-tBu-NCOC6 H2 )2 CH}]∞ , and [MgCl{(4,6-tBu-NCOC6 H2 )2 CH}(THF)2 ] were obtained upon metalation with alkaline or alkaline-earth-metal reagents. Reduction of [MgCl{(4,6-tBu-NCOC6 H2 )2 CH}(THF)2 ] with potassium metal or KC8 led to the formation of the homoleptic compound [Mg{(4,6-tBu-NCOC6 H2 )2 CH}2 ]. All compounds were fully characterized. Their solid-state structures as well as their behavior in solution, which was analyzed with the help of advanced NMR spectroscopic techniques, are discussed in detail.
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Affiliation(s)
- Ingo Koehne
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077, Göttingen, Germany
| | - Sebastian Bachmann
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077, Göttingen, Germany
| | - Thomas Niklas
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077, Göttingen, Germany
| | - Regine Herbst-Irmer
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077, Göttingen, Germany
| | - Dietmar Stalke
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077, Göttingen, Germany
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3
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Koehne I, Herbst‐Irmer R, Stalke D. Bis(4‐methylbenzoxazol‐2‐yl)methanide in s‐Block Metal Coordination. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700501] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ingo Koehne
- Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Tammannstr. 4 37077 Göttingen Germany
| | - Regine Herbst‐Irmer
- Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Tammannstr. 4 37077 Göttingen Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Tammannstr. 4 37077 Göttingen Germany
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4
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Dauer D, Koehne I, Herbst‐Irmer R, Stalke D. From Bis(imidazol‐2‐yl)methanes to Asymmetrically Substituted Bis(heterocyclo)methanides in Metal Coordination. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601470] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- David‐R. Dauer
- Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Tammannstraße 4 37077 Göttingen Germany
| | - Ingo Koehne
- Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Tammannstraße 4 37077 Göttingen Germany
| | - Regine Herbst‐Irmer
- Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Tammannstraße 4 37077 Göttingen Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Tammannstraße 4 37077 Göttingen Germany
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5
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Dauer DR, Flügge M, Herbst-Irmer R, Stalke D. Bis-(benzothiazol-2-yl)-amines and their metal amides: a structural comparison in the solid state. Dalton Trans 2016; 45:6136-48. [DOI: 10.1039/c5dt03911h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of functionalised bis-(benzothiazol-2-yl)-amine ligands and the related dimethylaluminium amides were synthesised and characterised. The solid state structural comparison reveals various coordination motifs, specific folding parameters and hydrogen bonding patterns in detail and guide the way to future Janus head ligand design.
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Affiliation(s)
- David-R. Dauer
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
| | - Melchior Flügge
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
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6
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Dauer DR, Stalke D. Heterocyclic substituted methanides as promising alternatives to the ubiquitous nacnac ligand. Dalton Trans 2014; 43:14432-9. [DOI: 10.1039/c4dt01008f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of group 13 complexes containing deprotonated bisheterocyclomethanes have been prepared as well as structurally and spectroscopically characterised.
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Affiliation(s)
- David-R. Dauer
- Institut für Anorganische Chemie der Georg-August-Universität Göttingen
- 37077 Göttingen, Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie der Georg-August-Universität Göttingen
- 37077 Göttingen, Germany
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7
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Armstrong DR, Garden JA, Kennedy AR, Mulvey RE, Robertson SD. Modifying alkylzinc reactivity with 2,2'-dipyridylamide: activation of tBu-Zn bonds for para-alkylation of benzophenone. Angew Chem Int Ed Engl 2013; 52:7190-3. [PMID: 23740807 PMCID: PMC4499259 DOI: 10.1002/anie.201302426] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Indexed: 11/30/2022]
Affiliation(s)
- David R Armstrong
- WestCHEM, Department of Pure and Applied Chemistry, University of StrathclydeGlasgow (UK)
| | - Jennifer A Garden
- WestCHEM, Department of Pure and Applied Chemistry, University of StrathclydeGlasgow (UK)
| | - Alan R Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of StrathclydeGlasgow (UK)
| | - Robert E Mulvey
- WestCHEM, Department of Pure and Applied Chemistry, University of StrathclydeGlasgow (UK)
| | - Stuart D Robertson
- WestCHEM, Department of Pure and Applied Chemistry, University of StrathclydeGlasgow (UK)
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8
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Armstrong DR, Garden JA, Kennedy AR, Mulvey RE, Robertson SD. Modifying Alkylzinc Reactivity with 2,2′-Dipyridylamide: Activation oftBuZn Bonds forpara-Alkylation of Benzophenone. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302426] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Shi Y, Blum SA. Gold and Rhodium Transmetalation: Mechanistic Insights and Dual-Metal Reactivity. Organometallics 2011. [DOI: 10.1021/om2001316] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yili Shi
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Suzanne A. Blum
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
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Merkel S, Stern D, Henn J, Stalke D. Solvent-Separated and Contact Ion Pairs of Parent Lithium Trimethyl Zincate. Angew Chem Int Ed Engl 2009; 48:6350-3. [DOI: 10.1002/anie.200901587] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Merkel S, Stern D, Henn J, Stalke D. Solvensgetrennte Ionenpaare und Kontaktionenpaare des Trimethylzinkat-Stammsystems. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901587] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Alexander JS, Allis DG, Teng W, Ruhlandt-Senge K. Alkali Metal Diphenylmethanides: Synthetic, Computational and Structural Studies. Chemistry 2007; 13:9899-911. [PMID: 17886847 DOI: 10.1002/chem.200700763] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In search of new synthetic precursors for the preparation of alkaline earth organometallic compounds, we investigated the application of a powerful desilylation reaction to cleanly afford a variety of contact and charge-separated alkali metal derivatives without the difficulties commonly encountered in other methods. The resulting diphenylmethanides display both contact molecules and separated ion pairs. Analysis of the structural data demonstrates that simple electrostatic models are insufficient for predicting and explaining the solid-state structures of these complexes. Detailed computational investigations were performed to probe the nature of the metal-anion and metal-donor interactions and determine the contributions of each to the observed solid-state structures.
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Affiliation(s)
- Jacob S Alexander
- Department of Chemistry, 1-014 Center for Science and Technology, Syracuse University, Syracuse, NY 13244-4100, USA
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13
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Niwa T, Yorimitsu H, Oshima K. Palladium-catalyzed direct arylation of aryl(azaaryl)methanes with aryl halides providing triarylmethanes. Org Lett 2007; 9:2373-5. [PMID: 17497870 DOI: 10.1021/ol0708119] [Citation(s) in RCA: 133] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Direct arylation of aryl(azaaryl)methanes with aryl halides takes place at the benzylic position in the presence of a hydroxide base under palladium catalysis to yield triarylmethanes.
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Affiliation(s)
- Takashi Niwa
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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14
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Stey T, Stalke D. The Di(benzothiazol-2-yl)-phosphanideJanus Head Ligand in Zinc and Cadmium Coordination. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200500293] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Murso A, Stalke D. Electronic response of a (P,N)-based ligand on metal coordination. Dalton Trans 2004:2563-9. [PMID: 15303173 DOI: 10.1039/b405680a] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of [(THF)Li(Ph(2)PC(H)Py)] with ZnCl(2) in the presence of ZnO yields the zinc complex [Zn(3)(Ph(2)PC(H)Py)(4)O] (1). Deprotonation of the phosphane Ph(2)P(CH(2)Py) with [Fe(N(SiMe(3))(2))2] gives the iron complexes [(Ph(2)P(CH(2)Py))Fe(Ph(2)PC(H)Py)2] (2) and [Fe(Ph(2)PC(H)Py)(N(SiMe(3))(2))]2 (3), depending on the ratio of phosphane. The solid state structures of the metal complexes illustrate the coordination flexibility of the [Ph(2)C(H)Py](-)-anion. Depending on the electronic requirements of the coordinated metal the anion acts as a (P,N)-chelating amide or C-coordinating carbanion with the P- and N-heteroatoms as donor bases.
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Affiliation(s)
- Alexander Murso
- Institut fur Anorganische Chemie, Universitat Wurzburg, Am Hubland, 97074 Wurzburg, Germany
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16
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Walfort B, Leedham AP, Russell CA, Stalke D. Triimidosulfonic acid and organometallic triimidosulfonates: S(+)-N(-) versus S=N bonding. Inorg Chem 2001; 40:5668-74. [PMID: 11599968 DOI: 10.1021/ic0105009] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Sulfonic acids RSO(2)OH and their metal salts MO(3)SR are versatile catalysts in large-scale industrial cyclization and polymerization processes. Isoelectronic replacement of the oxygen atoms by NR imido groups gives triimidosulfonic acid and triimidosulfonates. The salts form nonaggregated soluble molecules rather than infinite solid-state lattices such as their oxo analogues. In this paper, we present the synthesis and structure of the basic starting material MeS(N(t)Bu)(3)H (1), the metal complexes [Me(2)Al(N(t)Bu)(3)SMe] (2) and [Zn[(N(t)Bu)(3)SMe](2)] (3), and the mixed metal adduct [(thf)Li[(N(t)Bu)(3)SMe].ZnMe(2)] (4). The chelating coordination, rather than the tripodal coordination, cannot be attributed to steric effects of the S-bonded methyl group, as the less demanding Ph-C triple bond C-alkynyl substituent at sulfur in [(thf)(2)Li[(N(t)Bu)(3)SCCPh]] (5) causes the same conformation. S-N bond shortening to the pendant imido group has to be attributed to closed-shell electrostatic attraction rather than to S-N double bonding by valence expansion at the central sulfur atom. Coordination to an additional N-->Zn dative bond in 4 widens the bond length to values normally interpreted as S-N single bonds. We take this fact as experimental evidence that S-N bonding is predominantly governed by electrostatic interaction rather than by valence expansion employing d-orbitals. This was predicted by theoreticians more than a decade ago.
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Affiliation(s)
- B Walfort
- Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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17
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Wingerter S, Pfeiffer M, Murso A, Lustig C, Stey T, Chandrasekhar V, Stalke D. Phosphorus-Based Ambidentate Chelating Ligands: Pyridyl-N− and Imido-N−Metal Coordination in the Py2P(NSiMe3)2 Anion. J Am Chem Soc 2001. [DOI: 10.1021/ja0023736] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stefan Wingerter
- Contribution from the Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Indian Institute of Technology, Kanpur, Department of Chemistry, Kanpur-208 016, India
| | - Matthias Pfeiffer
- Contribution from the Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Indian Institute of Technology, Kanpur, Department of Chemistry, Kanpur-208 016, India
| | - Alexander Murso
- Contribution from the Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Indian Institute of Technology, Kanpur, Department of Chemistry, Kanpur-208 016, India
| | - Christian Lustig
- Contribution from the Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Indian Institute of Technology, Kanpur, Department of Chemistry, Kanpur-208 016, India
| | - Thomas Stey
- Contribution from the Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Indian Institute of Technology, Kanpur, Department of Chemistry, Kanpur-208 016, India
| | - Vadapalli Chandrasekhar
- Contribution from the Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Indian Institute of Technology, Kanpur, Department of Chemistry, Kanpur-208 016, India
| | - Dietmar Stalke
- Contribution from the Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Indian Institute of Technology, Kanpur, Department of Chemistry, Kanpur-208 016, India
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