showed that changes in the phosphorus hyperfine coupling constant aP at position β in β-phosphorylated nitroxides can be dramatic. Such changes were applied to the titration of water in organic solvents and conversely of organic solvents in water. One of the molecules tested was a non-cyclic nitroxide meaning that a thorough investigation of the solvent effect on the EPR hyperfine coupling constant is
在最近的两篇文章(Org。Biomol。Chem。,2015和2016)中,我们表明,β-
磷酸化氮氧化物中β位置的
磷超细偶合常数a P的变化非常显着。此类更改适用于滴定有机溶剂中的
水,反之则适用于
水中有机溶剂的滴定。测试的分子之一是非环状氮氧化物,这意味着及时研究溶剂对EPR超细偶合常数的影响。在本文中,我们证明了持久性非环状β-
磷酸化氮氧化物的a P随归一化极性Reichardt常数E N T降低。的科佩尔-Palm和Kalmet-阿布德-塔夫脱关系施用于更深入地了解影响的影响一个Ñ和一个P:极性/极化性,氢键供体属性,以及群聚区域的结构性。