insoluble in all solvents with which they do not react because they have extended structures. CaH 2 crystallizes in the PbCl 2 ( cotunnite ) structure . Read more... Edit at Wikipedia... Other names Calcium dihydride (IUPAC Name) References Please add any relevant references here. Retrieved from " http://www.rsc.org/learn-chemistry/wiki/Substance:Calcium_hydride " Navigation