EU14MNSB11, A NOVEL RARE-EARTH-METAL ZINTL COMPOUND

A new rare earth metal Zintl compound, Eu14MnSb11, has been prepared i n high yield from reacting stoichiometric amounts of the elements in a sealed tantalum tube, sealed in a quartz ampoule, at 1250-degrees-C f or 24 h. Eu14MnSb11 is isostructural with the Zintl compounds A14MPn11 (A=Ca, Sr, Ba; M=Al, Ga, Mn; Pn=As, Sb, Bi). Single crystal X-ray dif fraction shows that this compound crystallizes in the tetragonal space group I4(1)/acd, a = 17.300(3) angstrom, c=22.746(4) angstrom, T=130 K, Z=8.