ChemInform Abstract: Preparation and Superconductivity of New Stage and Polytypic Phases in Potassium-Intercalated Zirconium Nitride Chloride (K_xZrNCl).

New polytypic and intermediate-stage intercalation compounds K_0.26ZrNCl, K_0.08(thf)_yZrNCl, and K_0.26(pc)_yZrNCl (pc: propylene carbonate) with different amounts of potassium and cointercalation of THF are prepared from a K-naphthalene solution in THF, and a direct reaction with potassium metal.