On a class of distance-based molecular structure descriptors

被引:99
作者
Brueckler, Franka Miriam [2 ]
Doslic, Tomislav [1 ]
Graovac, Ante [3 ,4 ,5 ]
Gutman, Ivan [6 ]
机构
[1] Univ Zagreb, Fac Civil Engn, Zagreb 10000, Croatia
[2] Univ Zagreb, Dept Math, Zagreb 10000, Croatia
[3] Rudjer Boskovic Inst, NMR Ctr, Zagreb 10000, Croatia
[4] Univ Split, Fac Sci, Split 21000, Croatia
[5] Univ Dubrovnik, IMC, Dubrovnik 20000, Croatia
[6] Univ Kragujevac, Fac Sci, Kragujevac 34000, Serbia
关键词
WIENER INDEX; VERTEX INVARIANTS; HARARY INDEX; GRAPH-THEORY; PROPERTY; NUMBER; ORBITALS;
D O I
10.1016/j.cplett.2011.01.033
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
A new class of distance-based molecular structure descriptors is put forward, aimed at eliminating a general shortcoming of the Wiener and Wiener-type indices, namely that the greatest contributions to their numerical values come from vertex pairs at greatest distance. The Q-indices, considered in this work, consist of contributions of vertex pairs that exponentially decrease with distance. It is shown that the Q-indices are equal to the Hosoya polynomial H(G, lambda), evaluated at a pertinently selected value of the variable lambda. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:336 / 338
页数:3
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