4

Zr      0.253987759698445     -0.297542548239200      0.164310824750570
Zr      1.314257295949033      1.488440649173399      0.032777132345812
Zr      1.399719742214522     -0.126338640475018      1.460976737521101
Zr     -0.217806927196530      1.718138927456429      1.267160691478363