Modified Eccentric Connectivity of Generalized Thorn Graphs

Table 1

Different topological indices of octane isomers.

Molecule	MECI	ECI	TEI	CEI	AECI
Octane	136	74	44	2.352	3.838
2-Methyl-heptane	126	65	39	3.167	6.167
3-Methyl-heptane	121	63	38	3.25	6.267
4-Methyl-heptane	118	61	37	3.383	6.55
3-Ethyl-hexane	107	54	33	3.767	7.867
2,2-Dimethyl-hexane	132	56	34	3.633	7.8
2,3-Dimethyl-hexane	117	54	33	3.767	7.6
2,4-Dimethyl-hexane	117	54	33	3.767	7.933
2,5-Dimethyl-hexane	114	56	34	3.633	7.4
3,3-Dimethyl-hexane	114	52	32	5.4	8.3
3,4-Dimethyl-hexane	112	52	32	3.9	7.8
2-Methyl-3-ethyl-pentane	93	43	27	4.833	11.5
3-Methyl-3-ethyl-pentane	95	41	26	5.083	10.833
2,2,3-Trimethyl-pentane	107	43	27	4.833	10.5
2,2,4-Trimethyl-pentane	115	45	28	4.583	11.833
2,3,3-Trimethyl-pentane	103	41	26	5.083	10.333
2,3,4-Trimethyl-pentane	101	43	43	4.833	11.5
2,2,3,3-Tetramethyl-butane	100	34	34	6	10