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- W4313891978 abstract "The utilization of molecular structure topological indices is currently a standing operating procedure in the structure-property relations research, especially in QSPR/QSAR study. In the past several year, generous molecular topological indices related to some chemical and physical properties of chemical compounds were put forward. Among these topological indices, the VDB topological indices rely only on the vertex degree of chemical molecular graphs. The VDB topological index of an $ n $-order graph $ G $ is defined as TI(G) = sumlimits_{1leq ileq jleq n-1}m_{ij}psi_{ij}, $ where $ {psi_{ij}} $ is a set of real numbers, $ m_{ij} $ is the quantity of edges linking an $ i $-vertex and another $ j $-vertex. Numerous famous topological indices are special circumstance of this expression. f-benzenoids are a kind of polycyclic aromatic hydrocarbons, present in large amounts in coal tar. Studying the properties of f-benzenoids via topological indices is a worthy task. In this work the extremum $ TI $ of f-benzenoids with given number of edges were determined. The main idea is to construct f-benzenoids with maximal number of inlets and simultaneously minimal number of hexagons in $ Gamma_{m} $, where $ Gamma_{m} $ is the collection of f-benzenoids with exactly $ m $ $ (mgeq19) $ edges. As an application of this result, we give a unified approach of VDB topological indices to predict distinct chemical and physical properties such as the boiling point, $ pi $-electrom energy, molecular weight and vapour pressure etc. of f-benzenoids with fixed number of edges." @default.
- W4313891978 created "2023-01-10" @default.
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- W4313891978 date "2023-01-01" @default.
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- W4313891978 title "Extremal values of VDB topological indices over F-benzenoids with equal number of edges" @default.
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- W4313891978 doi "https://doi.org/10.3934/mbe.2023240" @default.
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