There is actually a third form of SnO obtained at high pressure that is
not included in COD but is listed in ICSD. It is not a layer structure
like the common forms, but interestingly has all Sn and O tetrahedrally
coordinated.

Serebrjanaja, N.R.;Kabalkina, S.S.;Vereshchagin, L.F.   The crystal
structure of tin oxide at high pressure(1969)Doklady Akademii Nauk SSSR
187, 307-310

Alan.

Leopoldo Suescun said:
> If you search the Crystallography Open Database (COD) at
> http://www.crystallography.net
> you will be able to find the two different crystalline forms of SnO plus
> ~80000 more cif files, all for free with a convenient search engine.
______________________________________________
Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE
<alan.he...@neutronoptics.com> +33.476.98.41.68
      http://www.NeutronOptics.com/hewat
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