作者:F. Bernardi、L. Lunazzi、P. Zanirato、G. cerioni
DOI:10.1016/0040-4020(77)84082-9
日期:1977.1
parameters involved in the rotation of the partial C-N double bond in a series of 5-membered heteroaromatic N,N-dimethyl-carbamides and -thiocarbamides have been measured by total line shape (TLS) analysis of their NMR. Lanthanide induced shift (LIS) has been applied in two cases to determine the conformation of the CO moiety with respect to the heteroatom. The energy barriers of thiazolyl carbamides
已通过其NMR的总线形(TLS)分析测量了一系列5元杂芳族N,N-二甲基氨基甲酰胺和-硫代氨基甲酰胺中涉及部分CN双键旋转的热力学参数。在两种情况下已应用镧系元素诱导的位移(LIS)来确定CO部分相对于杂原子的构象。发现噻唑基尿素和硫代尿素的能垒比呋喃基和噻吩基类似物大,并通过微扰分子轨道分析进行了解释。