Table 3 Optimal topological descriptors based on spectrum analysis for \(ZC_6[5,n]\), where \(2\le n\le 15\), are identified as the top five.

From: Predictive potential of distance-related spectral graphical descriptors for structure-property modeling of thermodynamic properties of polycyclic hydrocarbons with applications

\(ZC_6[5,n]\)

\(En_H\)

\(Es_{GA^2}\)

\(En_{GA^2}\)

\(En_{DD}\)

\(Es_{ABC^2}\)

\(ZC_6[5,2]\)

42.4156

77.6273

41.0904

217.4252

37.7476

\(ZC_6[5,3]\)

60.9452

109.6806

58.1305

321.2256

52.1344

\(ZC_6[5,4]\)

74.0452

130.5868

69.7692

397.3709

62.2993

\(ZC_6[5,5]\)

92.5372

163.3578

87.0582

500.9904

76.2604

\(ZC_6[5,6]\)

105.5011

188.1582

99.8468

576.5361

85.7444

\(ZC_6[5,7]\)

123.9716

221.5539

117.2291

680.0174

99.4414

\(ZC_6[5,8]\)

137.1272

246.5397

130.2352

756.5490

108.8549

\(ZC_6[5,9]\)

155.5456

282.0612

148.2364

859.7601

122.3128

\(ZC_6[5,10]\)

168.6165

308.3171

161.5894

935.8338

131.6698

\(ZC_6[5,11]\)

187.1002

345.4395

180.2012

1039.4182

145.0638

\(ZC_6[5,12]\)

200.1333

372.0528

193.6316

1115.2485

154.3475

\(ZC_6[5,13]\)

218.6333

409.2243

212.2461

1218.8922

167.7026

\(ZC_6[5,14]\)

231.6943

436.5013

225.9625

1294.9403

176.9359

\(ZC_6[5,15]\)

250.1350

474.6518

244.8417

1398.2733

190.2373