Organic charge‐transfer salt shows superconductivity

A highly anisotropic organic charge‐transfer salt has been made that shows a variety of fascinating properties. The material, $(TMTSF)2PF6,$ is the first organic solid to become superconducting. But the superconducting transition occurs at about 1.3 K and with the application of 6 kbar pressure. One can make other related salts, retaining the TMTSF as donor and replacing the acceptor with another inorganic anion, such as $AsF6,$ or $ClO4.$ These related salts are also superconductors with lower applied pressure or even atmospheric pressure but still at very low temperature.