Table 2 Comparisons between Gibbs free energies of BiX/SbX monolayers and those of BiX3/ SbX3 molecules

From: Quantum spin Hall insulators and quantum valley Hall insulators of BiX/SbX (X=H, F, Cl and Br) monolayers with a record bulk band gap

Monolayer

δG (eV)

Molecule

δG (eV)

BiH

0.299

BiH3

0.53

BiF

−1.23

BiF3

−1.976

BiCl

−0.509

BiCl3

−0.792

BiBr

−0.412

BiBr3

−0.899

SbH

0.219

SbH3

0.264

SbF

−1.288

SbF3

−2.204

SbCl

−0.478

SbCl3

−0.858

SbBr

−0.374

SbBr3

−0.579

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