Measurement of Silver-π Interactions in Solution Using Molecular Torsion Balances

被引:68
作者
Maier, Josef M. [1 ]
Li, Ping [1 ]
Hwang, Jungwun [1 ]
Smith, Mark D. [1 ]
Shimizu, Ken D. [1 ]
机构
[1] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA
基金
美国国家科学基金会;
关键词
POLYCYCLIC AROMATIC-HYDROCARBONS; SOLID-STATE; AG+-PI; RECOGNITION; CHEMISTRY; BINDING; COMPLEXATION; RECEPTOR; DESIGN; LIQUID;
D O I
10.1021/jacs.5b04554
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A new series of molecular torsion balances were designed to measure the strength of individual Ag-pi interactions in solution for an Ag(I) coordinated to a pyridine nitrogen. The formation of a well-defined intramolecular Ag-pi interaction in these model systems was verified by X-ray crystallography and H-1 NMR. The strength of the intramolecular Ag-pi interaction in solution was found to be stabilizing in nature and quantified to be -1.34 to -2.63 kcal/mol using a double mutant cycle analysis. The Ag-pi interaction was also found to be very sensitive to changes in geometry or solvent environment.
引用
收藏
页码:8014 / 8017
页数:4
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