The crystal structure described by Nb2Co12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 12-coordinate geometry to six equivalent Co(4) and six equivalent P(3) atoms. In the second Nb site, Nb(2) is bonded in a 6-coordinate geometry to six equivalent P(2) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one P(1), one P(3), and two equivalent P(2) atoms to form distorted CoP4 tetrahedra that share corners with two equivalent Co(2)P4 tetrahedra, corners with four equivalent Co(4)Nb2P4 tetrahedra, corners with four equivalent Co(1)P4 tetrahedra,  an edgeedge with one Co(4)Nb2P4 tetrahedra, and edges with two equivalent Co(2)P4 tetrahedra. In the second Co site, Co(2) is bonded to two equivalent P(2) and two equivalent P(3) atoms to form distorted CoP4 tetrahedra that share corners with two equivalent Co(1)P4 tetrahedra, corners with four equivalent Co(4)Nb2P4 tetrahedra, corners with four equivalent Co(2)P4 tetrahedra, edges with two equivalent Co(4)Nb2P4 tetrahedra, and edges with two equivalent Co(1)P4 tetrahedra. In the third Co site, Co(3) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent P(3) atoms. In the fourth Co site, Co(4) is bonded to two equivalent Nb(1), two equivalent P(2), and two equivalent P(3) atoms to form distorted CoNb2P4 tetrahedra that share corners with four equivalent Co(4)Nb2P4 tetrahedra, corners with four equivalent Co(1)P4 tetrahedra, corners with four equivalent Co(2)P4 tetrahedra,  an edgeedge with one Co(1)P4 tetrahedra, edges with two equivalent Co(4)Nb2P4 tetrahedra, edges with two equivalent Co(2)P4 tetrahedra, and faces with two equivalent Co(4)Nb2P4 tetrahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to three equivalent Co(1) and six equivalent Co(3) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Nb(2), one Co(3), two equivalent Co(1), two equivalent Co(2), and two equivalent Co(4) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Nb(1), one Co(1), two equivalent Co(2), two equivalent Co(3), and two equivalent Co(4) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nb2Co12P7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.812
_cell_length_b   8.812
_cell_length_c   3.502
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.002
_symmetry_Int_Tables_number   1
_cell_volume   235.486
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Nb  Nb0  1  0.667  0.333  0.500  1.0
  Nb  Nb1  1  0.333  0.667  1.000  1.0
  Co  Co2  1  0.120  0.843  0.000  1.0
  Co  Co3  1  0.387  0.439  0.500  1.0
  Co  Co4  1  0.723  0.880  1.000  1.0
  Co  Co5  1  0.561  0.949  0.500  1.0
  Co  Co6  1  0.227  0.098  0.500  1.0
  Co  Co7  1  0.871  0.773  0.500  1.0
  Co  Co8  1  0.902  0.129  0.500  1.0
  Co  Co9  1  0.935  0.369  1.000  1.0
  Co  Co10  1  0.631  0.566  1.000  1.0
  Co  Co11  1  0.434  0.065  0.000  1.0
  Co  Co12  1  0.051  0.613  0.500  1.0
  Co  Co13  1  0.157  0.277  0.000  1.0
  P  P14  1  1.000  1.000  1.000  1.0
  P  P15  1  0.590  0.710  0.500  1.0
  P  P16  1  0.703  0.117  1.000  1.0
  P  P17  1  0.883  0.586  0.000  1.0
  P  P18  1  0.414  0.297  0.000  1.0
  P  P19  1  0.290  0.880  0.500  1.0
  P  P20  1  0.120  0.410  0.500  1.0
[/CIF]
.
The crystal structure described by Nb2Co12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 12-coordinate geometry to six equivalent Co(4) and six equivalent P(3) atoms. In the second Nb site, Nb(2) is bonded in a 6-coordinate geometry to six equivalent P(2) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one P(1), one P(3), and two equivalent P(2) atoms to form distorted CoP4 tetrahedra that share corners with two equivalent Co(2)P4 tetrahedra, corners with four equivalent Co(4)Nb2P4 tetrahedra, corners with four equivalent Co(1)P4 tetrahedra,  an edgeedge with one Co(4)Nb2P4 tetrahedra, and edges with two equivalent Co(2)P4 tetrahedra. In the second Co site, Co(2) is bonded to two equivalent P(2) and two equivalent P(3) atoms to form distorted CoP4 tetrahedra that share corners with two equivalent Co(1)P4 tetrahedra, corners with four equivalent Co(4)Nb2P4 tetrahedra, corners with four equivalent Co(2)P4 tetrahedra, edges with two equivalent Co(4)Nb2P4 tetrahedra, and edges with two equivalent Co(1)P4 tetrahedra. In the third Co site, Co(3) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent P(3) atoms. In the fourth Co site, Co(4) is bonded to two equivalent Nb(1), two equivalent P(2), and two equivalent P(3) atoms to form distorted CoNb2P4 tetrahedra that share corners with four equivalent Co(4)Nb2P4 tetrahedra, corners with four equivalent Co(1)P4 tetrahedra, corners with four equivalent Co(2)P4 tetrahedra,  an edgeedge with one Co(1)P4 tetrahedra, edges with two equivalent Co(4)Nb2P4 tetrahedra, edges with two equivalent Co(2)P4 tetrahedra, and faces with two equivalent Co(4)Nb2P4 tetrahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to three equivalent Co(1) and six equivalent Co(3) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Nb(2), one Co(3), two equivalent Co(1), two equivalent Co(2), and two equivalent Co(4) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Nb(1), one Co(1), two equivalent Co(2), two equivalent Co(3), and two equivalent Co(4) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nb2Co12P7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.812
_cell_length_b   8.812
_cell_length_c   3.502
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.002
_symmetry_Int_Tables_number   1
_cell_volume   235.486
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Nb  Nb0  1  0.667  0.333  0.500  1.0
  Nb  Nb1  1  0.333  0.667  1.000  1.0
  Co  Co2  1  0.120  0.843  0.000  1.0
  Co  Co3  1  0.387  0.439  0.500  1.0
  Co  Co4  1  0.723  0.880  1.000  1.0
  Co  Co5  1  0.561  0.949  0.500  1.0
  Co  Co6  1  0.227  0.098  0.500  1.0
  Co  Co7  1  0.871  0.773  0.500  1.0
  Co  Co8  1  0.902  0.129  0.500  1.0
  Co  Co9  1  0.935  0.369  1.000  1.0
  Co  Co10  1  0.631  0.566  1.000  1.0
  Co  Co11  1  0.434  0.065  0.000  1.0
  Co  Co12  1  0.051  0.613  0.500  1.0
  Co  Co13  1  0.157  0.277  0.000  1.0
  P  P14  1  1.000  1.000  1.000  1.0
  P  P15  1  0.590  0.710  0.500  1.0
  P  P16  1  0.703  0.117  1.000  1.0
  P  P17  1  0.883  0.586  0.000  1.0
  P  P18  1  0.414  0.297  0.000  1.0
  P  P19  1  0.290  0.880  0.500  1.0
  P  P20  1  0.120  0.410  0.500  1.0
[/CIF]
.