I inserted the x values into my box and got a resistance. A superconductor is a material that has relatively normal properties at normal temperatures. This fact has really helped research into this area as before the only way they could get cold enough was to use liquid Helium, which is very cold. However these days cheep liquid Nitrogen can be used instead. Copper atoms are green.
Defects can skip along a chain.
The other compound wants to be in the square planar but cannot be whereas this one is, so this could have something to do with it. In this structure the Cu-O bonds are so long they no longer exist. The experiment was carried out on the computer since it's easier to use someone else's data than our own. Each copper is octahedrally bonded to 8 oxygens. At low temperatures the Cu ions are stationery.