论文部分内容阅读
使用精密氧弹量热计测定了下列物质的燃烧热△H(?)和生成热△H_f~O(1)马尿酸(c)-1008.30±0.22;(2)哌嗪(c)-707.79±0.27和-9.99±0.27及(3)氮七环(1)-987.03±0.39和-21.35±0.39kcal/mol。利用文献的或我们估计的相变潜热值,得到两个环状化合物的气态生成热。按照键能模式估计了这两个化合物的环张力能,分别为(2)-0.2±1.5和(3)5.6±0.4kcal/mol,并与其它环状化合物的环张力能进行了比较。
The heat of combustion ΔH (?) And heat ΔH_f ~ O (1) hippuric acid (c) -1008.30 ± 0.22; (2) piperazine (c) -707.79 ± 0.27 and -9.99 ± 0.27 and (3) Nitrostats (1) -987.03 ± 0.39 and -21.35 ± 0.39 kcal / mol. Using the literature or our estimate of latent heat of transformation, two cyclic compounds were obtained. The ring tension energies of these two compounds were estimated according to the bond-energy model, which were (2) -0.2 ± 1.5 and (3) 5.6 ± 0.4 kcal / mol, respectively, and were compared with those of other cyclic compounds.