Gernot Frenking
2014; Wiley; Volume: 53; Issue: 11 Linguagem: Norueguês
10.1002/anie.201309701
ISSN1521-3773
Tópico(s)Synthesis and Properties of Aromatic Compounds
ResumoAngewandte Chemie International EditionVolume 53, Issue 11 p. 2804-2805 Author Profile Gernot Frenking First published: 17 January 2014 https://doi.org/10.1002/anie.201309701Citations: 2Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Graphical Abstract “My greatest achievement has been exchanging the engine of a VW Beetle on a remote countryside road in Denmark, only equipped with a simple toolbox and the book Now I Help Myself. My worst nightmare is sitting in the Festspielhaus in Bayreuth and suffering a Wagner opera …︁” This and more about Gernot Frenking can be found on page 2804. References 1“Helium Chemistry: Theoretical Predictions and Experimental Challenge”: W. Koch, G. Frenking, J. Gauss, D. Cremer, J. R. Collins, J. Am. Chem. Soc. 1987, 109, 5917–5934. The light noble gases helium, neon, and argon are essentially terra incognita in chemistry. We used quantum chemical calculations to show that ion chemistry of helium features a broad spectrum of covalently bonded helium compounds. 10.1021/ja00254a005 CASWeb of Science®Google Scholar 2“Why do the Heavy-Atom Analogues of Acetylene E2H2 (E=Si–Pb) Exhibit Unusual Structures?”: M. Lein, A. Krapp, G. Frenking, J. Am. Chem. Soc. 2005, 127, 6290–6299. In the years 2000–2004, the first Group 14 homologues of alkynes REER (E=Si–Pb), which possess a trans-bent geometry were isolated. Much discussion in the following years focused on the questions if the molecules have a EE triple bond and why they are bent rather than linear. The debates ignored the fact that the parent compounds E2H2 possess completely different hydrogen-bridged equilibrium structures. The trans-bent geometries of REER come from the steric repulsion of the bulky substituents R. We gave an explanation for the unusual geometries and for the relative energies of all isomers, and we answered the question about the nature of the bonding and the bond orders in the molecules. 10.1021/ja042295c CASPubMedWeb of Science®Google Scholar 3“Orbital Overlap and Chemical Bonding”: A. Krapp, F. M. Bickelhaupt, G. Frenking, Chem. Eur. J. 2006, 12, 9196–9216. Covalent bonding is usually discussed in textbooks in terms of interactions of electrons in bonding orbitals where the strength and the bond length are determined by the orbital overlap. In this work, we show that the crucial factor for the equilibrium distance is the Pauli repulsion, which prevents maximum overlap of the orbitals, and that the bond strength depends on three factors: orbital interactions, Pauli repulsion, and Coulomb interactions. 10.1002/chem.200600564 CASPubMedWeb of Science®Google Scholar 4“Carbodiphosphoranes: The Chemistry of Divalent Carbon(0)”: R. Tonner, F. Öxler, B. Neumüller, W. Petz, G. Frenking, Angew. Chem. 2006, 118, 8206–8211; 10.1002/ange.200602552 Google ScholarAngew. Chem. Int. Ed. 2006, 45, 8038–8042. This publication is the actual birth of carbones CL2 , which are dicoordinated carbon(0) compounds with donor–acceptor bonds L→C←L and two lone pairs of electrons at carbon, presenting a new class of carbon compounds. They differ from carbenes CR2 , which have CR electron-sharing bonds and only one lone pair of electrons at carbon. The work was the starting point for systematic theoretical studies of carbones, which led to the prediction of stable carbodicarbenes C(NHC)2 (NHC=N-heterocyclic carbene), which in the meantime could become synthesized. Further theoretical studies were directed toward isoelectronic boron analogues (BH)L2 and the heavy Group 14 homologues EL2 (Si–Pb), which meanwhile were also synthesized. 10.1002/anie.200602552 CASPubMedWeb of Science®Google Scholar 5“Structures and Stabilities of Group 13 Adducts [(NHC)(EX3)] and [(NHC)2(E2Xn)] (E=B to In; X=H, Cl; n=4, 2, 0; NHC=N-Heterocyclic Carbene) and the Search for Hydrogen Storage Systems: A Theoretical Study”: N. Holzmann, A. Stasch, C. Jones, G. Frenking, Chem. Eur. J. 2011, 17, 13517–13525. The calculation of the Group 13 complexes E2(NHC)2 led to a boron compound with a linear arrangement and a boron–boron triple bond (NHC→BB←NHC), which has been isolated in the meantime. There is now a third class of compounds besides alkynes and N2 with a homoatomic classical triple bond that consists of one σ bond and two π bonds. 10.1002/chem.201101915 CASPubMedWeb of Science®Google Scholar Citing Literature Volume53, Issue11March 10, 2014Pages 2804-2805 ReferencesRelatedInformation
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