Dear All,

I am relatively new to Ifeffit and Artemis. I am trying to find a way to create four-shell model of an outer-sphere complex in Atoms or some other way readable by Atoms. I have no idea about the geometry, space group but some rough guess of bond-distances. The model to test against the EXAFS data is:

Ni is the central atom

Ni-O first shell

Ni-Ni second shell

Ni-Ti third shell

Ni-Si fourth shell

The model aims to test the adsorption of Ni on the surface of Ti-containing silicate mineral.

Could you please help.

Thanks.