Synthesis and Crystal Structure of ZrP₂S₆and ZrP₂S₇

Two new compounds have been synthesized and characterized: ZrP₂S₆and ZrP₂S₇. Both were prepared from direct combination of the elements at high temperature using a chemical transporting agent. Single crystal X-ray diffraction and elemental analysis (ICP-AE) were performed on the materials. ZrP₂S₆crystallized in a tetragonal space group (P-4,a=6.6758(4) Å,c=9.491(1) Å) whereas the ZrP₂S₇crystallized in a monoclinic space group (C2/c,a=8.614(1) Å,b=29.684(4) Å,c=8.583(1) Å,β=120.126°). The ZrP₂S₆displayed a weak second harmonic generation at 1064 nm.