BASICITY OF PRIMARY AMINES - A GROUP PROPERTIES BASED STUDY OF THE IMPORTANCE OF INDUCTIVE (ELECTRONEGATIVITY AND SOFTNESS) AND RESONANCE EFFECTS

被引:40
作者
BAETEN, A
DEPROFT, F
GEERLINGS, P
机构
[1] Eenheid Algemene Chemie (A.L.G.C.), Faculteit Wetenschappen, Vrije Universiteit Brussel, 1050 Brussels
关键词
D O I
10.1016/0009-2614(95)00084-H
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The group properties of substituents are invoked to explain the gas phase proton affinity of a variety of primary amines XNH(2). A triple correlation using the group electronegativity, group softness and a resonance parameter of the substituent was successful for interpreting the proton affinity sequence. The group electronegativity and resonance parameter were found to be important in determining this sequence, the group softness being of minor importance. Density functional theory based as well as more traditional quantum chemical properties in the neighbourhood of the nitrogen atom were found to be inadequate for our purpose.
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页码:17 / 21
页数:5
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