二、鉴定结构的大致程序鉴定化合物结构并没有严格的规则。这是因为有机化合物数量庞大、结构复杂,对样品本身的了解又有深、有浅,情况是千变万化的。下面的程序只不过是对鉴定结构稍加系统化的一种尝试。实践出真知,只有不断实践,才能摸索到一条灵活的行之有效的途径。(一)确定分子式(步骤见第一部分)。(二)判断未知物是脂肪族还是芳香族化 Second, the identification of the general structure of the program Identification of compound structure and there is no strict rules. This is because the large number of organic compounds, the complex structure, the sample itself is deep and shallow understanding, the situation is ever-changing. The procedure below is only an attempt to systematize the appraisal structure. Practicing truthfulness, only through constant practice can we find a flexible and effective way. (A) determine the formula (step see the first part). (B) to determine whether the unknown is aliphatic or aromatic