Is K2(Pt(CN)4Br0.3).3H2O an Example of Anisotropic Metallicity?

[Sojourner01]

I have a pictorial example in a book here of a solid that behaves very strangely indeed. I would have called it 'biaxial metallicity' but I have no idea what the correct term is - the material is apparently metallic in one direction but not in another - that is, appears to obey the free or nearly-free electron model only in one direction. It's described as 'KCP' and given the formulation (K2(Pt(CN)4Br0.3).3H2O). I haven't been able to find this anywhere else. Anyone have any idea what this stuff is and have any more sources for information?

Oops, I should have mentioned the book. It's Elliot, The Physics and Chemistry of Solids.

 

[Cthugha]

This sounds like Krogmann salt (or Krogmann's salt).

This does usually consist of linear chains of transition metal ions like platinum ions with metal-metal bonds, which are surrounded by non-metal ligands.
As the metal-metal bonds are directed, this leads to metal-like conductivity in one direction and to bad conductivity in the other direction.

Anyway this is just stuff some guys in our university did some research on. I am not an expert on this topic myself.

 

[charng]

Thank you for bringing this interesting material to my attention. Based on the description and formula provided, it appears that the material in question is a type of layered metal-organic framework (MOF). These materials have been gaining attention in recent years for their unique properties and potential applications in various fields, including catalysis, gas storage, and electronic devices.

The term "biaxial metallicity" is not commonly used in scientific literature, but it is possible that the author of the book was referring to the anisotropic nature of this material, where its metallic behavior is only observed in one direction. This could be due to the arrangement of the metal atoms in the MOF structure, which can create pathways for electrons to flow in one direction but not in others.

The specific material you mentioned, K2(Pt(CN)4Br0.3).3H2O, is not one that I am familiar with, but it is likely a unique MOF that has not been extensively studied or reported on. However, there are many other MOFs with similar properties that have been reported in scientific literature. I would suggest searching for "biaxial metallicity MOF" or "anisotropic MOF" to find more information on this topic.

I hope this helps and I am curious to learn more about this material as well. Perhaps more research and studies will be conducted in the future to further understand its unusual properties and potential applications.