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Updated: Jul 20, 2025

Spin Saturation Transfer Difference NMR SSTD NMR: A New Tool to Obtain Kinetic Parameters of Chemical Exchange Processes
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Spin Saturation Transfer Difference NMR SSTD NMR: A New Tool to Obtain Kinetic Parameters of Chemical Exchange Processes

Published on: November 12, 2016

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相对关系与交换竞争驱动非替代碳化合物的单元-三元激发状态反转

M E Sandoval-Salinas1,2, G Ricci3, A J Pérez-Jiménez1

  • 1Department of Physical Chemistry, University of Alicante, E-03080 Alicante, Spain. jc.sancho@ua.es.

Physical chemistry chemical physics : PCCP
|July 31, 2023
PubMed
概括

这项研究调查了为什么某些具有奇数环的分子可以违反亨德规则,导致反转的单元三元状态 (S1-T1). 了解这些电子和结构因素指导着寻找具有异常能量状态的新型分子的研究.

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UV–Vis Spectroscopy: Molecular Electronic Transitions

In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
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Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
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