文献类型：期刊文献

中文题名：醛酮类有机物中羰基氧原子的杂化状态

英文题名：Hybrid State of Carbonyl Oxygen Atom in Aldehyde and Ketone

作者：袁焜[1];刘艳芝[1];王鹏[1];朱元成[1];施小宁[2]

第一作者：袁焜

机构：[1]天水师范学院化学工程与技术学院,甘肃天水741001;[2]甘肃中医药大学药学院,甘肃兰州730000

第一机构：天水师范学院化学工程与技术学院,甘肃天水741001

年份：2018

卷号：39

期号：14

起止页码：75

中文期刊名：化学教育（中英文）

外文期刊名：Chinese Journal of Chemical Education

收录：北大核心:【北大核心2017】；

语种：中文

中文关键词：醛酮;杂化状态;sp^2;羰基氧;有机化学教学

外文关键词：aldehyde and ketone;hybrid state;sp^2;carbonyl oxygen;organic chemistry teaching

摘要：有机化学教科书及有关专著对羰基中氧原子的杂化状态,存在着不一致的观点。羰基中氧原子的杂化状态,在一定程度上会影响羰基的极性强弱,进而对羰基的化学性质产生细微的影响,特别是对其亲电加成反应活性的潜在影响。借助理论计算,发现醛、酮分子中羰基氧与碳成键时既不是彻底的sp2杂化状态,也不是非杂化直接成键,而是采用了一种介于sp^2与非杂化之间的一种成键状态。
There are controversial viewpoints on the hybrid state of carbonyl oxygen atom in the organic chemistry textbooks and some monographs. The hybridization state of O atoms in the carbonyl group affects on the polarity of carbonyl groups in a certain degree. Consequently, it will slightly affect on the chemical properties of the carbonyl group, especially on its electrophilie addition reaction activity. By means of theoretical calculation, it is found that the carbonyl oxygen of aldehyde or ketone molecules is neither in complete sp^2 nor in non-hybrid state when it bonds with carbonyl carbon, but in a status between sp^2 and non-hybrid.