The material described by Ce2Co7 crystallizes in the trigonal R-3m space group. There are five inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 6-coordinate geometry to three equivalent Co(2); three equivalent Co(3); six Co(4,4,4); and six equivalent Co(5) atoms. In the second Ce site, Ce(1) is bonded in a 6-coordinate geometry to three equivalent Co(2); three equivalent Co(3); six Co(4,4,4); and six equivalent Co(5) atoms. In the third Ce site, Ce(2) is bonded in a 9-coordinate geometry to three equivalent Co(1) and nine equivalent Co(5) atoms. In the fourth Ce site, Ce(1) is bonded in a 6-coordinate geometry to three equivalent Co(2); three equivalent Co(3); six Co(4,4); and six equivalent Co(5) atoms. In the fifth Ce site, Ce(1) is bonded in a 6-coordinate geometry to three equivalent Co(2); three equivalent Co(3); six Co(4,4); and six equivalent Co(5) atoms. There are eight inequivalent Co sites. In the first Co site, Co(4) is bonded to four Ce(1,1); two equivalent Co(2); two equivalent Co(3); and four Co(4,4) atoms to form CoCe4Co8 cuboctahedra that share corners with four equivalent Co(4)Ce4Co8 cuboctahedra; corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra; edges with two equivalent Co(4)Ce4Co8 cuboctahedra; edges with eight equivalent Co(5)Ce5Co7 cuboctahedra; faces with two equivalent Co(5)Ce5Co7 cuboctahedra; and faces with eight Co(4,4)Ce4Co8 cuboctahedra. In the second Co site, Co(1) is bonded to six equivalent Ce(2) and six equivalent Co(5) atoms to form CoCe6Co6 cuboctahedra that share corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra, edges with six equivalent Co(1)Ce6Co6 cuboctahedra, and faces with eighteen equivalent Co(5)Ce5Co7 cuboctahedra. In the third Co site, Co(2) is bonded in a 12-coordinate geometry to three equivalent Ce(1); three equivalent Co(3); three Co(4,4,4); and three equivalent Co(5) atoms. In the fourth Co site, Co(3) is bonded in a 12-coordinate geometry to three equivalent Ce(1); three equivalent Co(2); three Co(4,4,4); and three equivalent Co(5) atoms. In the fifth Co site, Co(4) is bonded to four equivalent Ce(1); two equivalent Co(2); two equivalent Co(3); and four Co(4,4) atoms to form CoCe4Co8 cuboctahedra that share corners with four equivalent Co(4)Ce4Co8 cuboctahedra; corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra; edges with two equivalent Co(4)Ce4Co8 cuboctahedra; edges with eight equivalent Co(5)Ce5Co7 cuboctahedra; faces with two equivalent Co(5)Ce5Co7 cuboctahedra; and faces with eight Co(4,4)Ce4Co8 cuboctahedra. In the sixth Co site, Co(4) is bonded to four equivalent Ce(1); two equivalent Co(2); two equivalent Co(3); and four Co(4,4) atoms to form CoCe4Co8 cuboctahedra that share corners with four equivalent Co(4)Ce4Co8 cuboctahedra; corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra; edges with two equivalent Co(4)Ce4Co8 cuboctahedra; edges with eight equivalent Co(5)Ce5Co7 cuboctahedra; faces with two equivalent Co(5)Ce5Co7 cuboctahedra; and faces with eight Co(4,4)Ce4Co8 cuboctahedra. In the seventh Co site, Co(4) is bonded to four equivalent Ce(1); two equivalent Co(2); two equivalent Co(3); and four Co(4,4) atoms to form CoCe4Co8 cuboctahedra that share corners with four equivalent Co(4)Ce4Co8 cuboctahedra; corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra; edges with two equivalent Co(4)Ce4Co8 cuboctahedra; edges with eight equivalent Co(5)Ce5Co7 cuboctahedra; faces with two equivalent Co(5)Ce5Co7 cuboctahedra; and faces with eight Co(4,4)Ce4Co8 cuboctahedra. In the eighth Co site, Co(5) is bonded to two equivalent Ce(1), three equivalent Ce(2), one Co(1), one Co(2), one Co(3), and four equivalent Co(5) atoms to form distorted CoCe5Co7 cuboctahedra that share corners with two equivalent Co(1)Ce6Co6 cuboctahedra; corners with six Co(4,4,4)Ce4Co8 cuboctahedra; corners with nine equivalent Co(5)Ce5Co7 cuboctahedra; edges with four Co(4,4)Ce4Co8 cuboctahedra; edges with four equivalent Co(5)Ce5Co7 cuboctahedra;  a faceface with one Co(4)Ce4Co8 cuboctahedra; faces with three equivalent Co(1)Ce6Co6 cuboctahedra; and faces with ten equivalent Co(5)Ce5Co7 cuboctahedra. is represented by the CIF card [CIF]
data_Ce2Co7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.879
_cell_length_b   4.879
_cell_length_c   12.695
_cell_angle_alpha   78.921
_cell_angle_beta   78.921
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   255.149
_cell_formula_units_Z   2
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
  Ce  Ce0  1  0.949  0.949  0.154  1.0
  Ce  Ce1  1  0.051  0.051  0.846  1.0
  Ce  Ce2  1  0.853  0.853  0.442  1.0
  Ce  Ce3  1  0.147  0.147  0.558  1.0
  Co  Co4  1  0.500  0.500  0.500  1.0
  Co  Co5  1  0.722  0.722  0.835  1.0
  Co  Co6  1  0.278  0.278  0.165  1.0
  Co  Co7  1  0.612  0.612  0.165  1.0
  Co  Co8  1  0.388  0.388  0.835  1.0
  Co  Co9  1  0.000  0.500  0.000  1.0
  Co  Co10  1  0.500  0.000  0.000  1.0
  Co  Co11  1  0.500  0.500  0.000  1.0
  Co  Co12  1  0.391  0.391  0.328  1.0
  Co  Co13  1  0.890  0.391  0.328  1.0
  Co  Co14  1  0.391  0.890  0.328  1.0
  Co  Co15  1  0.609  0.609  0.672  1.0
  Co  Co16  1  0.110  0.609  0.672  1.0
  Co  Co17  1  0.609  0.110  0.672  1.0
[/CIF]
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The material described by Ce2Co7 crystallizes in the trigonal R-3m space group. There are five inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 6-coordinate geometry to three equivalent Co(2); three equivalent Co(3); six Co(4,4,4); and six equivalent Co(5) atoms. In the second Ce site, Ce(1) is bonded in a 6-coordinate geometry to three equivalent Co(2); three equivalent Co(3); six Co(4,4,4); and six equivalent Co(5) atoms. In the third Ce site, Ce(2) is bonded in a 9-coordinate geometry to three equivalent Co(1) and nine equivalent Co(5) atoms. In the fourth Ce site, Ce(1) is bonded in a 6-coordinate geometry to three equivalent Co(2); three equivalent Co(3); six Co(4,4); and six equivalent Co(5) atoms. In the fifth Ce site, Ce(1) is bonded in a 6-coordinate geometry to three equivalent Co(2); three equivalent Co(3); six Co(4,4); and six equivalent Co(5) atoms. There are eight inequivalent Co sites. In the first Co site, Co(4) is bonded to four Ce(1,1); two equivalent Co(2); two equivalent Co(3); and four Co(4,4) atoms to form CoCe4Co8 cuboctahedra that share corners with four equivalent Co(4)Ce4Co8 cuboctahedra; corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra; edges with two equivalent Co(4)Ce4Co8 cuboctahedra; edges with eight equivalent Co(5)Ce5Co7 cuboctahedra; faces with two equivalent Co(5)Ce5Co7 cuboctahedra; and faces with eight Co(4,4)Ce4Co8 cuboctahedra. In the second Co site, Co(1) is bonded to six equivalent Ce(2) and six equivalent Co(5) atoms to form CoCe6Co6 cuboctahedra that share corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra, edges with six equivalent Co(1)Ce6Co6 cuboctahedra, and faces with eighteen equivalent Co(5)Ce5Co7 cuboctahedra. In the third Co site, Co(2) is bonded in a 12-coordinate geometry to three equivalent Ce(1); three equivalent Co(3); three Co(4,4,4); and three equivalent Co(5) atoms. In the fourth Co site, Co(3) is bonded in a 12-coordinate geometry to three equivalent Ce(1); three equivalent Co(2); three Co(4,4,4); and three equivalent Co(5) atoms. In the fifth Co site, Co(4) is bonded to four equivalent Ce(1); two equivalent Co(2); two equivalent Co(3); and four Co(4,4) atoms to form CoCe4Co8 cuboctahedra that share corners with four equivalent Co(4)Ce4Co8 cuboctahedra; corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra; edges with two equivalent Co(4)Ce4Co8 cuboctahedra; edges with eight equivalent Co(5)Ce5Co7 cuboctahedra; faces with two equivalent Co(5)Ce5Co7 cuboctahedra; and faces with eight Co(4,4)Ce4Co8 cuboctahedra. In the sixth Co site, Co(4) is bonded to four equivalent Ce(1); two equivalent Co(2); two equivalent Co(3); and four Co(4,4) atoms to form CoCe4Co8 cuboctahedra that share corners with four equivalent Co(4)Ce4Co8 cuboctahedra; corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra; edges with two equivalent Co(4)Ce4Co8 cuboctahedra; edges with eight equivalent Co(5)Ce5Co7 cuboctahedra; faces with two equivalent Co(5)Ce5Co7 cuboctahedra; and faces with eight Co(4,4)Ce4Co8 cuboctahedra. In the seventh Co site, Co(4) is bonded to four equivalent Ce(1); two equivalent Co(2); two equivalent Co(3); and four Co(4,4) atoms to form CoCe4Co8 cuboctahedra that share corners with four equivalent Co(4)Ce4Co8 cuboctahedra; corners with twelve equivalent Co(5)Ce5Co7 cuboctahedra; edges with two equivalent Co(4)Ce4Co8 cuboctahedra; edges with eight equivalent Co(5)Ce5Co7 cuboctahedra; faces with two equivalent Co(5)Ce5Co7 cuboctahedra; and faces with eight Co(4,4)Ce4Co8 cuboctahedra. In the eighth Co site, Co(5) is bonded to two equivalent Ce(1), three equivalent Ce(2), one Co(1), one Co(2), one Co(3), and four equivalent Co(5) atoms to form distorted CoCe5Co7 cuboctahedra that share corners with two equivalent Co(1)Ce6Co6 cuboctahedra; corners with six Co(4,4,4)Ce4Co8 cuboctahedra; corners with nine equivalent Co(5)Ce5Co7 cuboctahedra; edges with four Co(4,4)Ce4Co8 cuboctahedra; edges with four equivalent Co(5)Ce5Co7 cuboctahedra;  a faceface with one Co(4)Ce4Co8 cuboctahedra; faces with three equivalent Co(1)Ce6Co6 cuboctahedra; and faces with ten equivalent Co(5)Ce5Co7 cuboctahedra. is represented by the CIF card [CIF]
data_Ce2Co7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.879
_cell_length_b   4.879
_cell_length_c   12.695
_cell_angle_alpha   78.921
_cell_angle_beta   78.921
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   255.149
_cell_formula_units_Z   2
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
  Ce  Ce0  1  0.949  0.949  0.154  1.0
  Ce  Ce1  1  0.051  0.051  0.846  1.0
  Ce  Ce2  1  0.853  0.853  0.442  1.0
  Ce  Ce3  1  0.147  0.147  0.558  1.0
  Co  Co4  1  0.500  0.500  0.500  1.0
  Co  Co5  1  0.722  0.722  0.835  1.0
  Co  Co6  1  0.278  0.278  0.165  1.0
  Co  Co7  1  0.612  0.612  0.165  1.0
  Co  Co8  1  0.388  0.388  0.835  1.0
  Co  Co9  1  0.000  0.500  0.000  1.0
  Co  Co10  1  0.500  0.000  0.000  1.0
  Co  Co11  1  0.500  0.500  0.000  1.0
  Co  Co12  1  0.391  0.391  0.328  1.0
  Co  Co13  1  0.890  0.391  0.328  1.0
  Co  Co14  1  0.391  0.890  0.328  1.0
  Co  Co15  1  0.609  0.609  0.672  1.0
  Co  Co16  1  0.110  0.609  0.672  1.0
  Co  Co17  1  0.609  0.110  0.672  1.0
[/CIF]
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