Narumi-Katayama index of phenylenes

Željko Tomović; Ivan Gutman

doi:10.2298/jsc0104243t

Narumi-Katayama index of phenylenes

Željko Tomović, Ivan Gutman

Research output: Contribution to journal › Article › Academic › peer-review

21 Citations (Scopus)

Abstract

The Narumi-Katayama topological indes S of a hydrocarbon is the product of vertex degrees of the respective molecular graph. If PH is a phenylene and HS is its hexagonal squeeze, then the respective Narumi-Katayama indices are related as S(PH) = 9^{h 1} S(HS), where h is the number of hexagons of PH and HS, or as S(PH) = αS(HS)^β. where α = 0.078 and β = 1.613.

Original language	English
Pages (from-to)	243-247
Number of pages	5
Journal	Journal of the Serbian Chemical Society
Volume	66
Issue number	4
DOIs	https://doi.org/10.2298/jsc0104243t
Publication status	Published - 1 Jan 2001

Keywords

Benzenoid hydrocarbons
Hexagonal squeeze
Narumi-Katayama topological index
Phenylenes

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abstract = "The Narumi-Katayama topological indes S of a hydrocarbon is the product of vertex degrees of the respective molecular graph. If PH is a phenylene and HS is its hexagonal squeeze, then the respective Narumi-Katayama indices are related as S(PH) = 9h 1 S(HS), where h is the number of hexagons of PH and HS, or as S(PH) = αS(HS)β. where α = 0.078 and β = 1.613.",

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AB - The Narumi-Katayama topological indes S of a hydrocarbon is the product of vertex degrees of the respective molecular graph. If PH is a phenylene and HS is its hexagonal squeeze, then the respective Narumi-Katayama indices are related as S(PH) = 9h 1 S(HS), where h is the number of hexagons of PH and HS, or as S(PH) = αS(HS)β. where α = 0.078 and β = 1.613.

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KW - Hexagonal squeeze

KW - Narumi-Katayama topological index

KW - Phenylenes

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ER -

Narumi-Katayama index of phenylenes

Abstract

Keywords

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