The crytal strcture of GeO

Materials Project
1

i could not find GeO in materials project.i am curious about why ? it’s too hard to form ? what properties cause that difficulties?

2

Hi @hjt, there are 14 oxides of germanium currently on MP (see code snippet below for how to query), but not germanium monoxide. We just lack a crystal structure for GeO (experimental or otherwise), which is why it’s not on MP.

The ground-state crystal structure can be determined directly with DFT, but that would require searching over a wide space of realistic crystal structures.

from mp_api.client import MPRester

with MPRester() as mpr:
   ge_o_docs = mpr.materials.summary.search(chemsys=["Ge-O"])
3

yeah so I am wondering why GeO is so unstable, which leads to the experimental difficulties. Comparing with CO & PbO, what makes GeO so special?