  We present a first-principles investigation of electronic structure, lattice
dynamics, and electron-phonon coupling of NiAs-type structure FeZnSb$_2$ and
the isostructural parent compound FeSb within the framework of density
functional theory. The calculation on partial disordered system FeZnSb$_2$ was
performed in a fixed configuration. This hypothetical ordered structure is
predicted to be superconducting.
