Bounds for the Randic connectivity index

被引:24
作者
Gutman, I
Araujo, O
Morales, DA
机构
[1] Univ Kragujevac, Fac Sci, YU-34000 Kragujevac, Yugoslavia
[2] Univ Los Andes, Fac Ciencias, Dept Matemat, Merida 5101, Venezuela
[3] Univ Los Andes, Fac Ciencias, Dept Quim, Merida 5101, Venezuela
来源
JOURNAL OF CHEMICAL INFORMATION AND COMPUTER SCIENCES | 2000年 / 40卷 / 03期
关键词
D O I
10.1021/ci990095s
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
For a saturated hydrocarbon with n carbon atoms and m carbon-carbon bonds and with Randic connectivity index chi, two functions, L = L(n,m) and U = U(n,m), are determined, such that L less than or equal to chi less than or equal to U. These bounds are better than those previously reported; for most chemically relevant values of n and m there exist hydrocarbons for which chi = L or chi = U.
引用
收藏
页码:593 / 598
页数:6
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