Separation of motional processes in a [2]catenane by combining synthetic, dual-frequency EPR and molecular modelling approaches

Godt A, Jeschke G (2005)
MAGNETIC RESONANCE IN CHEMISTRY 43(S1): S110-S118.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
Continuous-wave EPR of nitroxide spin labels at conventional (9.4 GHz) and high (94.2 GHz) frequencies is applied to characterize molecular dynamics in [2]catenanes composed of macrocycles with rigid phenyleneethynylene and flexible alkyl chain building blocks. By using a set of compounds with increasing complexity, which were all labelled at the centre of a rigid building block, it was possible to find regimes where spectral lineshapes were dominated by local motion of the spin label or those that contained information on tumbling of the building blocks. In chloroform, the macrocycles do not move as rigid objects, rather the rigid building block can reorient with some ease, with respect to the rest of the molecule. Furthermore, in that solvent the [2]catenane samples the co-conformational space on a timescale of microseconds or shorter. In a mechanical picture, chloroform can thus be considered as an effective lubricant that prevents the macrocycles from sticking together. Copyright (c) 2005 John Wiley & Sons, Ltd.
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MAGNETIC RESONANCE IN CHEMISTRY
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43
Zeitschriftennummer
S1
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S110-S118
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Godt A, Jeschke G. Separation of motional processes in a [2]catenane by combining synthetic, dual-frequency EPR and molecular modelling approaches. MAGNETIC RESONANCE IN CHEMISTRY. 2005;43(S1):S110-S118.
Godt, A., & Jeschke, G. (2005). Separation of motional processes in a [2]catenane by combining synthetic, dual-frequency EPR and molecular modelling approaches. MAGNETIC RESONANCE IN CHEMISTRY, 43(S1), S110-S118. doi:10.1002/mrc.1687
Godt, A., and Jeschke, G. (2005). Separation of motional processes in a [2]catenane by combining synthetic, dual-frequency EPR and molecular modelling approaches. MAGNETIC RESONANCE IN CHEMISTRY 43, S110-S118.
Godt, A., & Jeschke, G., 2005. Separation of motional processes in a [2]catenane by combining synthetic, dual-frequency EPR and molecular modelling approaches. MAGNETIC RESONANCE IN CHEMISTRY, 43(S1), p S110-S118.
A. Godt and G. Jeschke, “Separation of motional processes in a [2]catenane by combining synthetic, dual-frequency EPR and molecular modelling approaches”, MAGNETIC RESONANCE IN CHEMISTRY, vol. 43, 2005, pp. S110-S118.
Godt, A., Jeschke, G.: Separation of motional processes in a [2]catenane by combining synthetic, dual-frequency EPR and molecular modelling approaches. MAGNETIC RESONANCE IN CHEMISTRY. 43, S110-S118 (2005).
Godt, Adelheid, and Jeschke, G. “Separation of motional processes in a [2]catenane by combining synthetic, dual-frequency EPR and molecular modelling approaches”. MAGNETIC RESONANCE IN CHEMISTRY 43.S1 (2005): S110-S118.

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