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Slyusarchuk VD, Kruger PE, Hawes CS. Cyclic Aliphatic Hydrocarbons as Linkers in Metal‐Organic Frameworks: New Frontiers for Ligand Design. Chempluschem 2020; 85:845-854. [DOI: 10.1002/cplu.202000206] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/15/2020] [Indexed: 12/14/2022]
Affiliation(s)
| | - Paul E. Kruger
- MacDiarmid Institute for Advanced Materials and NanotechnologySchool of Physical and Chemical SciencesUniversity of Canterbury Christchurch 8140 New Zealand
| | - Chris S. Hawes
- School of Chemical and Physical SciencesKeele University Keele ST5 5BG United Kingdom
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Wehle D, Scheuermann H, Fitjer L. Sterisch überladene Cyclohexane, 5. Synthese, Konformation und Dynamik von 4,4,5,5,6,6,7,7,8,8‐Decamethylspiro[2.5]octan und Dodecamethylcyclohexan. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19861191020] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Detlef Wehle
- Institut für Organische Chemie der Universität Göttingen, Tammannstr. 2, D‐3400 Göttingen
| | - Hans‐Jörg Scheuermann
- Institut für Organische Chemie der Universität Göttingen, Tammannstr. 2, D‐3400 Göttingen
| | - Lutz Fitjer
- Institut für Organische Chemie der Universität Göttingen, Tammannstr. 2, D‐3400 Göttingen
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del Fernández-Alonso MC, Cañada J, Jiménez-Barbero J, Cuevas G. Theoretical Study of Inversion and Topomerization Processes of Substituted Cyclohexanes: The Relevance of the Energy 3D Hypersurface. Chemphyschem 2005; 6:671-80. [PMID: 15881583 DOI: 10.1002/cphc.200400495] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Although the potential energy surface of highly symmetric cyclohexane has been extensively reviewed, no attention has been paid to the study of the effect of substitution of a methylene group by a heteroatom. The substitution may cause changes in molecular symmetry as well as the dipole moment, and the unshared electron pairs associated with the heteroatom may also introduce changes in molecular reactivity. However, these phenomena are not yet completely understood. To address these issues, a rigorous description of the inversion-topomerization process of methylcyclohexane and a revision of the conformational potential energy of oxane and thiane are presented. Moreover, the usefulness of providing a three-dimensional representation of these processes is discussed. In the case of methylcyclohexane, calculations show that three transition states are associated with inversion and four more with topomerization. In contrast, for oxane and thiane, only two transition states are involved with inversion and two with topomerization. Two fundamental conclusions can be drawn from this study. The first is that the inversion process occurs through elementary, stages that we have denoted "conformational elemental stages", which is an analogous term to that used for reaction mechanism description (minima-transition state-minima) where several elemental steps take place. The second conclusion is that two independent processes, inversion and topomerization, are connected by some common conformers. The inversion process controls the ring interchange, while topomerization allows exchange between skewed boats.
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Fitjer L, Steeneck C, Gaini-Rahimi S, Schröder U, Justus K, Puder P, Dittmer M, Hassler C, Weiser J, Noltemeyer M, Teichert M. A New Rotane Family: Synthesis, Structure, Conformation, and Dynamics of [3.4]-, [4.4]-, [5.4]-, and [6.4]Rotane1. J Am Chem Soc 1998. [DOI: 10.1021/ja973118x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lutz Fitjer
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Christoph Steeneck
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Said Gaini-Rahimi
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Ulrike Schröder
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Karl Justus
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Peter Puder
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Martin Dittmer
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Carla Hassler
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Jörg Weiser
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Mathias Noltemeyer
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Markus Teichert
- Contribution from the Institut für Organische Chemie der Universität Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany, and Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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