Non-Transition Metal Systems— SN X and Others

In the course of the broad research effort on preparing radically new superconducting materials, other inorganic systems were found to exhibit this phenomenon a sampling of these are presented below. The unusual feature of these materials is the fact that few contain the best superconducting elements in their chemical formulations. 

Highly conducting 1-D system. Undergoes a Peierls transition at low temperature. Nearly superconducting. Stack of super-positioned, square-planar Pt(CN)4 groups. 

Both CuCl2 and Cu(NOs)2 have been introduced (31) between the layers of graphite (stage-five intercalation) by E. Strumpp in W. 

Historical Introduction and Crystal Chemistry of Oxide Superconductors 27 

Germany, but the physical properties of these intercalates have not been reported. Japanese workers have focussed their research on other alkali-metal derivatives, and have incorporated some heavy metals between the layers. Compositions such as C4KHg, C8KHg, C4KT115, and C8KH 010 have been isolated. 

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