The colorless crystal of the title compound was obtained in the reaction sy
stem containing reagents of Eu2O3, Zn powder, HCl, H2S, Me4NCl, H2O and CH3
COOH. The crystallographic data: M-r=350.60, monoclinic, C2/c, a=26.3749(7)
, b=13.9613(5), c=12.9565(4)Angstrom, beta =93.285(1)degrees, V=4763.1 Angs
trom (3), Z=12, D-x=1.467g.cm(-3), mu (MoK alpha)=1.885mm(-1), F(000)=2208,
R=0.0552. The research result of X-ray single-crystal structure analysis r
eveals that the crystal is of a rare superstructure type.