Discrimination of geometrical epoxide isomers by ENDOR Spectroscopy and DFT calculations: The role of hydrogen bonds

被引:10
|
作者
Murphy, Damien M. [1 ]
Fallis, Ian A. [1 ]
Willock, David J. [1 ]
Landon, James [1 ]
Carter, Emma [1 ]
Vinck, Evi [2 ]
机构
[1] Cardiff Univ, Sch Chem, Cardiff CF10 3AT, S Glam, Wales
[2] Univ Instelling Antwerp, SIBAC Lab, Dept Phys, B-2610 Antwerp, Belgium
基金
英国工程与自然科学研究理事会;
关键词
chirality; density functional calculations; ENDOR spectroscopy; epoxides; EPR spectroscopy;
D O I
10.1002/anie.200703537
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(Chemical Equation Presented) EPR and ENDOR spectroscopies combined with DFT calculations have revealed the selective binding of a cis over a trans epoxide to a chiral vanadyl salen complex (see picture). Complementary DFT calculations identified a weak electrostatic interaction supplemented by multiple hydrogen-bonding contacts as the origins of this selectivity. These observations were experimentally confirmed in frozen solution by orientation selective ENDOR measurements. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:1414 / 1416
页数:3
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