论文部分内容阅读
有机氯化物的热化学是人们重视的研究课题.由于这类化合物有广泛的实际应用价值,从理论上讲,这类化合物中极性氯原子的存在,使分子中非键合原子间的相互作用比较突出.所以用精确的热化学键能模式处理这类化合物时,也得不到用同样方法处理含C、H和O化合物那样几乎与实验精度相一致的结果.基于上述原因,我们选定氯代苯系列为研究对象.Smith等曾测定过1,2,4-三氯苯的燃烧热,但实验结果的精度不高.1983年等报道了1,2,3-三氯苯的燃烧焓和生成焓,但计算中所用升华焓却采用经验估算值,计算结果误差偏大.本文将报道用精密转动弹量热计测定诸三氯苯燃烧热的实验结果和计算出的这些化合物在液态(或固态)和气态下的标准生成焓.同时还计算出它们的异构化焓和原子化热,并
The thermochemistry of organic chlorides is an important research topic.As the compounds have a wide range of practical applications, in theory, the existence of polar chlorine atoms in these compounds, the non-bonded atoms in the molecule Therefore, the exact thermo-chemical bond mode can not be used to treat these compounds with almost the same experimental results as the C, H and O compounds treated by the same method. For the above reasons, we chose Chlorobenzene series as the research object.Smith et al.1.4,2 trichlorobenzene was measured combustion heat, but the experimental results of the accuracy is not high in 1983 reported 1,2,3-trichlorobenzene combustion Enthalpy and enthalpy of formation, but the sublimation enthalpy used in the calculation is based on empirical estimates, the calculation error is large.This paper reports the experimental results of the determination of the combustion heat of trichlorobenzene by a precision rotating bomb calorimeter and the calculation of these compounds at Standard enthalpy of formation in liquid (or solid) and gaseous state, and also calculate their isomerization enthalpy and heat of atomization