检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:曾荣英[1] 邝代治[1] 唐文清[1] 冯泳兰[1] 陈志敏[1]
机构地区:[1]衡阳师范学院化学与材料科学系,湖南衡阳421008
出 处:《衡阳师范学院学报》2007年第6期78-83,共6页Journal of Hengyang Normal University
基 金:Natural Science Foundation of the Hunan Province(05JJ40015)Supportecl by the construct program of the key discipline in Hunan province
摘 要:用HF和B3LYP方法计算了十八种脂肪胺的气相碱性,所得结果与实验值在次序上一致,讨论了这些化合物的气相碱性与分子中的电荷分布及电离势、质子亲合能的关系。The gas-phase basicities of the fatty amines can be measured by their proton affinities. In this paper, the gasphase alkalescence of about eighteen compounds are calculated by the methods of HF and B3LYP, the calculation results are agreed with the experimental values. The gas phase alkalescence of these compounds are as follows= a. MeNH2 〈 EtNH2 PrNH2〈 n-BuNH2〈 n-PentylNH2〈 n-HexylNH2; b. Me2NH〈 Et2NH〈 Pr2NH〈 n-Bu2NH〈 n-Pentyl2 NH〈 n- Hexyl2, NH; c. Me3 N〈 Et3 N〈 Pr3 N〈 n-Bu3 N〈 n-Pentyl3 N〈 n- Hexyl3 N; d. Me3 N〉Me2 NH〉MeNH2, Et3N〉Et2NH〉EtNH2, Pr3N〉ProNH 〉PrNH2, n-Bu3N〉n-Bu2NH〉n-BuNH2, n-Pentyl3N〉n-Pentyl2 NH〉n- PentylNH2, n-Hexyl3 N〉n-Hexyl2 NH〉n-HexylNH2.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.70