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Topological indices computing on random chain structures
Author(s) -
Li Siman,
Shi Li,
Gao Wei
Publication year - 2021
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.26589
Subject(s) - topological index , index (typography) , quantitative structure–activity relationship , reciprocal , markov chain , chain (unit) , mathematics , statistical physics , computer science , statistics , combinatorics , chemistry , stereochemistry , physics , quantum mechanics , linguistics , philosophy , world wide web
Abstract Topological indices are a vital tool in QSAR/QSPR study, and Randić index and Zagreb index are mostly historical and well‐known indices which have been widely used to predict the properties of compounds. In recent years, to meet the demands from various engineering applications, some variants of Randić index and Zagreb index are defined and investigated. In this work, we determine the redefined Zagreb indices, forgotten index, reduced reciprocal Randić index and reduced second Zagreb index for random polyphenyl chain and random spiro chain which are produced by zeroth‐order Markov process and frequently appears in the field of materials and pharmacology. Furthermore, the average values and special settings in p 1 or p 2 to be zero are discussed.