4

Fe      0.273541036547340      0.032739635050214      0.076759923453861
Fe      1.154835217653831      1.794978828798281      0.291192563847456
Nb      1.306912291017673      0.161889860222413      1.445649968239156
Nb     -0.251588144315113      1.492145270942367      1.507958172954755