  The Stone-Wales defect is a well-known and significant defective structure in
carbon materials, impacting their mechanical, chemical, and electronic
properties. Recently, a novel metal-carbon nanomaterial named Volleyballene has
been discovered, characterized by a C-C bond bridging two carbon pentagons.
Using first-principles calculations, a stable Stone-Wales-defective counterpart
of Volleyballene, exhibiting $T_h$ symmetry, has been proposed by rotating the
C-C bond by 90${\deg}$. Although its binding energy per atom is slightly higher
than Volleyballene (${\Delta}E_b$ = 0.009 eV/atom), implying marginally lower
structural stability, it can maintain its bond structure until the effective
temperature reaches about 1538.56 K, indicating greater thermodynamic
stability. Additionally, its highest vibration frequency is 1346.2 cm$^{-1}$,
indicating strong chemical bond strength. A theoretical analysis of the
Sc$_{20}$C$_{60}$+Sc$_{20}$C$_{60}$ binary systems highlights that the stable
building block may be applied in potential nano-assembly.
