The compound Sr4OCl6 was synthesized and its crystal structure was det
ermined by using a ferroelectrically single domain crystal. The struct
ure is similar to those of other M(4)OCl(6) compounds where M=Ca,Yb,Eu
,Sm and Ba. Interatomic distances are compared with these compounds. T
he Raman spectra of Sr4OCl6 and Ba4OCl6 are compared.