The crystal structure described by Eu2Co12P7 crystallizes in the monoclinic Pm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 18-coordinate geometry to one Co(1), one Co(2), one Co(3), one Co(4), one Co(5), one Co(6), two equivalent Co(7), two equivalent Co(8), two equivalent Co(9), two equivalent P(4), two equivalent P(5), and two equivalent P(6) atoms. In the second Eu site, Eu(2) is bonded in a 12-coordinate geometry to two equivalent Co(1), two equivalent Co(2), two equivalent Co(3), two equivalent P(1), two equivalent P(2), and two equivalent P(3) atoms. There are twelve inequivalent Co sites. In the first Co site, Co(1) is bonded to one Eu(1), two equivalent Eu(2), one P(1), one P(3), and two equivalent P(5) atoms to form distorted CoEu3P4 tetrahedra that share corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(5)EuP4 tetrahedra, corners with three equivalent Co(2)Eu3P4 tetrahedra, corners with three equivalent Co(3)Eu3P4 tetrahedra,  an edgeedge with one Co(6)EuP4 tetrahedra, edges with two equivalent Co(8)Eu2P4 tetrahedra, edges with two equivalent Co(1)Eu3P4 tetrahedra,  a faceface with one Co(2)Eu3P4 tetrahedra,  a faceface with one Co(3)Eu3P4 tetrahedra,  a faceface with one Co(5)EuP4 tetrahedra, and faces with two equivalent Co(9)Eu2P4 tetrahedra. In the second Co site, Co(2) is bonded to one Eu(1), two equivalent Eu(2), one P(1), one P(2), and two equivalent P(6) atoms to form distorted CoEu3P4 tetrahedra that share corners with two equivalent Co(5)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra, corners with three equivalent Co(1)Eu3P4 tetrahedra, corners with three equivalent Co(3)Eu3P4 tetrahedra, corners with four equivalent Co(8)Eu2P4 tetrahedra,  an edgeedge with one Co(4)EuP4 tetrahedra, edges with two equivalent Co(9)Eu2P4 tetrahedra, edges with two equivalent Co(2)Eu3P4 tetrahedra,  a faceface with one Co(1)Eu3P4 tetrahedra,  a faceface with one Co(3)Eu3P4 tetrahedra, and  a faceface with one Co(6)EuP4 tetrahedra. In the third Co site, Co(3) is bonded to one Eu(1), two equivalent Eu(2), one P(2), one P(3), and two equivalent P(4) atoms to form distorted CoEu3P4 tetrahedra that share corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra, corners with three equivalent Co(1)Eu3P4 tetrahedra, corners with three equivalent Co(2)Eu3P4 tetrahedra, corners with four equivalent Co(9)Eu2P4 tetrahedra,  an edgeedge with one Co(5)EuP4 tetrahedra, edges with two equivalent Co(3)Eu3P4 tetrahedra,  a faceface with one Co(1)Eu3P4 tetrahedra,  a faceface with one Co(2)Eu3P4 tetrahedra,  a faceface with one Co(4)EuP4 tetrahedra, and faces with two equivalent Co(8)Eu2P4 tetrahedra. In the fourth Co site, Co(4) is bonded to one Eu(1), one P(1), one P(7), and two equivalent P(4) atoms to form distorted CoEuP4 tetrahedra that share corners with two equivalent Co(9)Eu2P4 tetrahedra, corners with two equivalent Co(1)Eu3P4 tetrahedra, corners with two equivalent Co(3)Eu3P4 tetrahedra, corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(5)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra,  an edgeedge with one Co(2)Eu3P4 tetrahedra, edges with two equivalent Co(8)Eu2P4 tetrahedra, and  a faceface with one Co(3)Eu3P4 tetrahedra. In the fifth Co site, Co(5) is bonded to one Eu(1), one P(2), one P(7), and two equivalent P(5) atoms to form distorted CoEuP4 tetrahedra that share corners with two equivalent Co(1)Eu3P4 tetrahedra, corners with two equivalent Co(2)Eu3P4 tetrahedra, corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(5)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra,  an edgeedge with one Co(3)Eu3P4 tetrahedra, edges with two equivalent Co(9)Eu2P4 tetrahedra,  a faceface with one Co(1)Eu3P4 tetrahedra, and faces with two equivalent Co(8)Eu2P4 tetrahedra. In the sixth Co site, Co(6) is bonded to one Eu(1), one P(3), one P(7), and two equivalent P(6) atoms to form distorted CoEuP4 tetrahedra that share corners with two equivalent Co(8)Eu2P4 tetrahedra, corners with two equivalent Co(2)Eu3P4 tetrahedra, corners with two equivalent Co(3)Eu3P4 tetrahedra, corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(5)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra,  an edgeedge with one Co(1)Eu3P4 tetrahedra,  a faceface with one Co(2)Eu3P4 tetrahedra, and faces with two equivalent Co(9)Eu2P4 tetrahedra. In the seventh Co site, Co(7) is bonded in a 4-coordinate geometry to two equivalent Eu(1), one P(4), one P(6), and two equivalent P(1) atoms. In the eighth Co site, Co(8) is bonded to two equivalent Eu(1), one P(4), one P(5), and two equivalent P(2) atoms to form distorted CoEu2P4 tetrahedra that share corners with two equivalent Co(9)Eu2P4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra, corners with four equivalent Co(2)Eu3P4 tetrahedra, edges with two equivalent Co(8)Eu2P4 tetrahedra, edges with two equivalent Co(1)Eu3P4 tetrahedra, edges with two equivalent Co(4)EuP4 tetrahedra,  a faceface with one Co(9)Eu2P4 tetrahedra, faces with two equivalent Co(3)Eu3P4 tetrahedra, and faces with two equivalent Co(5)EuP4 tetrahedra. In the ninth Co site, Co(9) is bonded to two equivalent Eu(1), one P(5), one P(6), and two equivalent P(3) atoms to form distorted CoEu2P4 tetrahedra that share corners with two equivalent Co(8)Eu2P4 tetrahedra, corners with two equivalent Co(4)EuP4 tetrahedra, corners with four equivalent Co(3)Eu3P4 tetrahedra, edges with two equivalent Co(9)Eu2P4 tetrahedra, edges with two equivalent Co(2)Eu3P4 tetrahedra, edges with two equivalent Co(5)EuP4 tetrahedra,  a faceface with one Co(8)Eu2P4 tetrahedra, faces with two equivalent Co(1)Eu3P4 tetrahedra, and faces with two equivalent Co(6)EuP4 tetrahedra. In the tenth Co site, Co(10) is bonded in a 5-coordinate geometry to one P(5), two equivalent P(1), and two equivalent P(7) atoms. In the eleventh Co site, Co(11) is bonded in a 5-coordinate geometry to one P(6), two equivalent P(2), and two equivalent P(7) atoms. In the twelfth Co site, Co(12) is bonded in a 5-coordinate geometry to one P(4), two equivalent P(3), and two equivalent P(7) atoms. There are seven inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Co(1), one Co(2), one Co(4), two equivalent Co(10), and two equivalent Co(7) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Co(2), one Co(3), one Co(5), two equivalent Co(11), and two equivalent Co(8) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Co(1), one Co(3), one Co(6), two equivalent Co(12), and two equivalent Co(9) atoms. In the fourth P site, P(4) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Co(12), one Co(7), one Co(8), two equivalent Co(3), and two equivalent Co(4) atoms. In the fifth P site, P(5) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Co(10), one Co(8), one Co(9), two equivalent Co(1), and two equivalent Co(5) atoms. In the sixth P site, P(6) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Co(11), one Co(7), one Co(9), two equivalent Co(2), and two equivalent Co(6) atoms. In the seventh P site, P(7) is bonded in a 9-coordinate geometry to one Co(4), one Co(5), one Co(6), two equivalent Co(10), two equivalent Co(11), and two equivalent Co(12) atoms. is represented by the CIF file [CIF]
data_Eu2Co12P7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.583
_cell_length_b   9.105
_cell_length_c   9.087
_cell_angle_alpha   120.110
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   256.483
_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
  Eu  Eu0  1  0.000  0.666  0.334  1.0
  Eu  Eu1  1  0.500  0.334  0.667  1.0
  Co  Co2  1  0.000  0.376  0.944  1.0
  Co  Co3  1  0.000  0.056  0.432  1.0
  Co  Co4  1  0.000  0.568  0.624  1.0
  Co  Co5  1  0.000  0.881  0.729  1.0
  Co  Co6  1  0.000  0.271  0.152  1.0
  Co  Co7  1  0.000  0.848  0.119  1.0
  Co  Co8  1  0.500  0.950  0.568  1.0
  Co  Co9  1  0.500  0.432  0.382  1.0
  Co  Co10  1  0.500  0.618  0.050  1.0
  Co  Co11  1  0.500  0.132  0.896  1.0
  Co  Co12  1  0.500  0.103  0.235  1.0
  Co  Co13  1  0.500  0.765  0.869  1.0
  P  P14  1  0.000  0.110  0.708  1.0
  P  P15  1  0.000  0.292  0.402  1.0
  P  P16  1  0.000  0.598  0.890  1.0
  P  P17  1  0.500  0.709  0.602  1.0
  P  P18  1  0.500  0.398  0.107  1.0
  P  P19  1  0.500  0.893  0.291  1.0
  P  P20  1  0.000  1.000  0.000  1.0
[/CIF]
.
The crystal structure described by Eu2Co12P7 crystallizes in the monoclinic Pm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 18-coordinate geometry to one Co(1), one Co(2), one Co(3), one Co(4), one Co(5), one Co(6), two equivalent Co(7), two equivalent Co(8), two equivalent Co(9), two equivalent P(4), two equivalent P(5), and two equivalent P(6) atoms. In the second Eu site, Eu(2) is bonded in a 12-coordinate geometry to two equivalent Co(1), two equivalent Co(2), two equivalent Co(3), two equivalent P(1), two equivalent P(2), and two equivalent P(3) atoms. There are twelve inequivalent Co sites. In the first Co site, Co(1) is bonded to one Eu(1), two equivalent Eu(2), one P(1), one P(3), and two equivalent P(5) atoms to form distorted CoEu3P4 tetrahedra that share corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(5)EuP4 tetrahedra, corners with three equivalent Co(2)Eu3P4 tetrahedra, corners with three equivalent Co(3)Eu3P4 tetrahedra,  an edgeedge with one Co(6)EuP4 tetrahedra, edges with two equivalent Co(8)Eu2P4 tetrahedra, edges with two equivalent Co(1)Eu3P4 tetrahedra,  a faceface with one Co(2)Eu3P4 tetrahedra,  a faceface with one Co(3)Eu3P4 tetrahedra,  a faceface with one Co(5)EuP4 tetrahedra, and faces with two equivalent Co(9)Eu2P4 tetrahedra. In the second Co site, Co(2) is bonded to one Eu(1), two equivalent Eu(2), one P(1), one P(2), and two equivalent P(6) atoms to form distorted CoEu3P4 tetrahedra that share corners with two equivalent Co(5)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra, corners with three equivalent Co(1)Eu3P4 tetrahedra, corners with three equivalent Co(3)Eu3P4 tetrahedra, corners with four equivalent Co(8)Eu2P4 tetrahedra,  an edgeedge with one Co(4)EuP4 tetrahedra, edges with two equivalent Co(9)Eu2P4 tetrahedra, edges with two equivalent Co(2)Eu3P4 tetrahedra,  a faceface with one Co(1)Eu3P4 tetrahedra,  a faceface with one Co(3)Eu3P4 tetrahedra, and  a faceface with one Co(6)EuP4 tetrahedra. In the third Co site, Co(3) is bonded to one Eu(1), two equivalent Eu(2), one P(2), one P(3), and two equivalent P(4) atoms to form distorted CoEu3P4 tetrahedra that share corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra, corners with three equivalent Co(1)Eu3P4 tetrahedra, corners with three equivalent Co(2)Eu3P4 tetrahedra, corners with four equivalent Co(9)Eu2P4 tetrahedra,  an edgeedge with one Co(5)EuP4 tetrahedra, edges with two equivalent Co(3)Eu3P4 tetrahedra,  a faceface with one Co(1)Eu3P4 tetrahedra,  a faceface with one Co(2)Eu3P4 tetrahedra,  a faceface with one Co(4)EuP4 tetrahedra, and faces with two equivalent Co(8)Eu2P4 tetrahedra. In the fourth Co site, Co(4) is bonded to one Eu(1), one P(1), one P(7), and two equivalent P(4) atoms to form distorted CoEuP4 tetrahedra that share corners with two equivalent Co(9)Eu2P4 tetrahedra, corners with two equivalent Co(1)Eu3P4 tetrahedra, corners with two equivalent Co(3)Eu3P4 tetrahedra, corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(5)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra,  an edgeedge with one Co(2)Eu3P4 tetrahedra, edges with two equivalent Co(8)Eu2P4 tetrahedra, and  a faceface with one Co(3)Eu3P4 tetrahedra. In the fifth Co site, Co(5) is bonded to one Eu(1), one P(2), one P(7), and two equivalent P(5) atoms to form distorted CoEuP4 tetrahedra that share corners with two equivalent Co(1)Eu3P4 tetrahedra, corners with two equivalent Co(2)Eu3P4 tetrahedra, corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(5)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra,  an edgeedge with one Co(3)Eu3P4 tetrahedra, edges with two equivalent Co(9)Eu2P4 tetrahedra,  a faceface with one Co(1)Eu3P4 tetrahedra, and faces with two equivalent Co(8)Eu2P4 tetrahedra. In the sixth Co site, Co(6) is bonded to one Eu(1), one P(3), one P(7), and two equivalent P(6) atoms to form distorted CoEuP4 tetrahedra that share corners with two equivalent Co(8)Eu2P4 tetrahedra, corners with two equivalent Co(2)Eu3P4 tetrahedra, corners with two equivalent Co(3)Eu3P4 tetrahedra, corners with two equivalent Co(4)EuP4 tetrahedra, corners with two equivalent Co(5)EuP4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra,  an edgeedge with one Co(1)Eu3P4 tetrahedra,  a faceface with one Co(2)Eu3P4 tetrahedra, and faces with two equivalent Co(9)Eu2P4 tetrahedra. In the seventh Co site, Co(7) is bonded in a 4-coordinate geometry to two equivalent Eu(1), one P(4), one P(6), and two equivalent P(1) atoms. In the eighth Co site, Co(8) is bonded to two equivalent Eu(1), one P(4), one P(5), and two equivalent P(2) atoms to form distorted CoEu2P4 tetrahedra that share corners with two equivalent Co(9)Eu2P4 tetrahedra, corners with two equivalent Co(6)EuP4 tetrahedra, corners with four equivalent Co(2)Eu3P4 tetrahedra, edges with two equivalent Co(8)Eu2P4 tetrahedra, edges with two equivalent Co(1)Eu3P4 tetrahedra, edges with two equivalent Co(4)EuP4 tetrahedra,  a faceface with one Co(9)Eu2P4 tetrahedra, faces with two equivalent Co(3)Eu3P4 tetrahedra, and faces with two equivalent Co(5)EuP4 tetrahedra. In the ninth Co site, Co(9) is bonded to two equivalent Eu(1), one P(5), one P(6), and two equivalent P(3) atoms to form distorted CoEu2P4 tetrahedra that share corners with two equivalent Co(8)Eu2P4 tetrahedra, corners with two equivalent Co(4)EuP4 tetrahedra, corners with four equivalent Co(3)Eu3P4 tetrahedra, edges with two equivalent Co(9)Eu2P4 tetrahedra, edges with two equivalent Co(2)Eu3P4 tetrahedra, edges with two equivalent Co(5)EuP4 tetrahedra,  a faceface with one Co(8)Eu2P4 tetrahedra, faces with two equivalent Co(1)Eu3P4 tetrahedra, and faces with two equivalent Co(6)EuP4 tetrahedra. In the tenth Co site, Co(10) is bonded in a 5-coordinate geometry to one P(5), two equivalent P(1), and two equivalent P(7) atoms. In the eleventh Co site, Co(11) is bonded in a 5-coordinate geometry to one P(6), two equivalent P(2), and two equivalent P(7) atoms. In the twelfth Co site, Co(12) is bonded in a 5-coordinate geometry to one P(4), two equivalent P(3), and two equivalent P(7) atoms. There are seven inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Co(1), one Co(2), one Co(4), two equivalent Co(10), and two equivalent Co(7) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Co(2), one Co(3), one Co(5), two equivalent Co(11), and two equivalent Co(8) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Co(1), one Co(3), one Co(6), two equivalent Co(12), and two equivalent Co(9) atoms. In the fourth P site, P(4) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Co(12), one Co(7), one Co(8), two equivalent Co(3), and two equivalent Co(4) atoms. In the fifth P site, P(5) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Co(10), one Co(8), one Co(9), two equivalent Co(1), and two equivalent Co(5) atoms. In the sixth P site, P(6) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Co(11), one Co(7), one Co(9), two equivalent Co(2), and two equivalent Co(6) atoms. In the seventh P site, P(7) is bonded in a 9-coordinate geometry to one Co(4), one Co(5), one Co(6), two equivalent Co(10), two equivalent Co(11), and two equivalent Co(12) atoms. is represented by the CIF file [CIF]
data_Eu2Co12P7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.583
_cell_length_b   9.105
_cell_length_c   9.087
_cell_angle_alpha   120.110
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   256.483
_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
  Eu  Eu0  1  0.000  0.666  0.334  1.0
  Eu  Eu1  1  0.500  0.334  0.667  1.0
  Co  Co2  1  0.000  0.376  0.944  1.0
  Co  Co3  1  0.000  0.056  0.432  1.0
  Co  Co4  1  0.000  0.568  0.624  1.0
  Co  Co5  1  0.000  0.881  0.729  1.0
  Co  Co6  1  0.000  0.271  0.152  1.0
  Co  Co7  1  0.000  0.848  0.119  1.0
  Co  Co8  1  0.500  0.950  0.568  1.0
  Co  Co9  1  0.500  0.432  0.382  1.0
  Co  Co10  1  0.500  0.618  0.050  1.0
  Co  Co11  1  0.500  0.132  0.896  1.0
  Co  Co12  1  0.500  0.103  0.235  1.0
  Co  Co13  1  0.500  0.765  0.869  1.0
  P  P14  1  0.000  0.110  0.708  1.0
  P  P15  1  0.000  0.292  0.402  1.0
  P  P16  1  0.000  0.598  0.890  1.0
  P  P17  1  0.500  0.709  0.602  1.0
  P  P18  1  0.500  0.398  0.107  1.0
  P  P19  1  0.500  0.893  0.291  1.0
  P  P20  1  0.000  1.000  0.000  1.0
[/CIF]
.