A team of researchers at the U.S. Department of Energy’s Ames Laboratory has synthesized and accurately characterized cesium platinide hydride (4Cs2Pt*CsH), the first intermetallic double salt with platinum. Crystals of cesium platinide hydride 4Cs2Pt*CsH. Image credit: Ames Laboratory, U.S. Department of Energy. Cesium platinide hydride is a new member of a rare family of compounds in which a metal forms a truly negatively charged ion. It has a...