Calcium bis(cyclopentadienyl) (calcocene) CaCp2 is polymeric non-volatile solid [[i]] and therefore not suitable for CVD applications.
[i] R. Zerger, G. Stucky, J. Organomet. Chem. 1974, 80, 7.
Calcium bis(isopropylcyclopentadienyl) Ca(iPrCp)2 had been used for the deposition of pure metallic calcium films on glass substrates at 800°C/250Torr. The films oxidized quickly in air [109]