lnovgunic Chemistry
416 NOTES COKTRIBUTION FROM THE UEPARTMEYT OF CHEMISTRY, BRIGHAM TOCXG UNIVERSITY, PROVO, UTAH 84601
High-pressure Synthesis of Lutetium Diantimsnide BY NORMAN L. E A T O U GAHX~D H.TRACY HALL
Received September 3 , 1969
The synthesis of all the rare earth diantimonides with the exception of EuSbs and LuSbz has been reported previously. Diantimonides from LaSbs to SmSbz can be prepared by conventional methods2 while those from GdSba to TmSbs require high-pressure techniques. a In previous work we investigated all of the rare earth-antimony systems at a mixture ratio of 1 mol of rare earth:2 mol of antimony at pressures up to 70 kbars3 Since then the Yb 2Sb and Lu 2Sb systems have been investigated at higher pressures. No phases other than the ZrSis structure of YbSbz4 2% system up to 90 kbars and were found in the Yb 1500O. In the Lu 2Sb system, LuSb2 of the high-
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TABLE I POWDER DIFPRACTIOS DATAFOR LuSbi 7---
hkl
011 110 111 003 112 113 020 114 02 1 105 401 22 1 402 106 024 413 025 421 422 316 226 034 610 522 523 109, 431 417 209 62 1 622 530 712 240 241, 532
I
