  18
NbO Pm(-3)m (O^1_{h}, #221) & cP6                                              
Nb      .00000000     2.10600000     2.10600000
Nb     2.10600000      .00000000     2.10600000
Nb     2.10600000     2.10600000      .00000000
O      2.10600000      .00000000      .00000000
O       .00000000     2.10600000      .00000000
O       .00000000      .00000000     2.10600000
Nb     2.10600000     2.10600000     4.21200000
O      2.10600000      .00000000     4.21200000
O       .00000000     2.10600000     4.21200000
Nb     2.10600000     4.21200000     2.10600000
O      2.10600000     4.21200000      .00000000
O       .00000000     4.21200000     2.10600000
O      2.10600000     4.21200000     4.21200000
Nb     4.21200000     2.10600000     2.10600000
O      4.21200000     2.10600000      .00000000
O      4.21200000      .00000000     2.10600000
O      4.21200000     2.10600000     4.21200000
O      4.21200000     4.21200000     2.10600000
