Hückel in 1937 from carbon tetrachloride and prepared again several times and the 3,5-dimethyl substituted 2 obtained serendipitously by Pombeiro in 2009. We have now extended this group to include four new derivatives 8, 9, 11 and 12 bearing methyl groups. The X-ray crystal structure of the four compounds has been determined. They have been studied by NMR both in solution (1H, 13C, 15N) and in the solid
四(1- ħ -
吡唑-1-基)
甲烷是其中只有两个是已知的非常罕见的化合物:未取代的1经典由休克尔在1937年从
四氯化碳获得并再次制备几次和3,5-二甲基取代的2获得偶然通过Pombeiro在2009年我们现在已经扩展这个组包括四个新的衍
生物8,9,11和12个的轴承甲基。已经确定了四种化合物的X射线晶体结构。已通过NMR在溶液(1 H,13 C,15 N)和固态(13 C和13 H )中对它们进行了研究。15 N)。六种化合物(几何形状,能量和绝对屏蔽)的DFT计算已用于讨论实验观察结果。