The compound described by Cr3Co2 crystallizes in the orthorhombic Cmm2 space group. There are seven inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 15-coordinate geometry to one Cr(1), one Cr(6), two equivalent Cr(3), two equivalent Cr(5), two equivalent Cr(7), one Co(5), two equivalent Co(4), and four equivalent Co(2) atoms. In the second Cr site, Cr(2) is bonded in a 15-coordinate geometry to one Cr(2), one Cr(5), one Cr(7), two equivalent Cr(4), two equivalent Cr(6), two equivalent Co(3), two equivalent Co(5), and four equivalent Co(1) atoms. In the third Cr site, Cr(3) is bonded in a 7-coordinate geometry to one Cr(1), one Cr(3), four equivalent Cr(4), one Co(5), two equivalent Co(1), and two equivalent Co(2) atoms. In the fourth Cr site, Cr(4) is bonded in a 14-coordinate geometry to one Cr(2), one Cr(4), one Cr(5), one Cr(6), one Cr(7), four equivalent Cr(3), one Co(5), two equivalent Co(1), and two equivalent Co(2) atoms. In the fifth Cr site, Cr(5) is bonded in a 7-coordinate geometry to one Cr(2), two equivalent Cr(1), two equivalent Cr(4), two equivalent Cr(7), one Co(4), two equivalent Co(1), and two equivalent Co(2) atoms. In the sixth Cr site, Cr(6) is bonded in a 7-coordinate geometry to one Cr(1), two equivalent Cr(2), two equivalent Cr(4), one Co(3), two equivalent Co(1), two equivalent Co(2), and two equivalent Co(5) atoms. In the seventh Cr site, Cr(7) is bonded in a 7-coordinate geometry to one Cr(2), two equivalent Cr(1), two equivalent Cr(4), two equivalent Cr(5), one Co(4), two equivalent Co(1), and two equivalent Co(2) atoms. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to one Cr(5), one Cr(6), one Cr(7), two equivalent Cr(2), two equivalent Cr(3), two equivalent Cr(4), one Co(1), one Co(3), and one Co(5) atom to form distorted CoCr9Co3 cuboctahedra that share corners with two equivalent Co(3)Cr6Co6 cuboctahedra, corners with two equivalent Co(4)Cr8Co4 cuboctahedra, corners with three equivalent Co(1)Cr9Co3 cuboctahedra, corners with four equivalent Co(2)Cr9Co3 cuboctahedra, edges with three equivalent Co(1)Cr9Co3 cuboctahedra,  a faceface with one Co(3)Cr6Co6 cuboctahedra, faces with two equivalent Co(1)Cr9Co3 cuboctahedra, and faces with four equivalent Co(2)Cr9Co3 cuboctahedra. In the second Co site, Co(2) is bonded to one Cr(5), one Cr(6), one Cr(7), two equivalent Cr(1), two equivalent Cr(3), two equivalent Cr(4), one Co(2), one Co(4), and one Co(5) atom to form distorted CoCr9Co3 cuboctahedra that share corners with two equivalent Co(3)Cr6Co6 cuboctahedra, corners with two equivalent Co(4)Cr8Co4 cuboctahedra, corners with three equivalent Co(2)Cr9Co3 cuboctahedra, corners with four equivalent Co(1)Cr9Co3 cuboctahedra, edges with three equivalent Co(2)Cr9Co3 cuboctahedra,  a faceface with one Co(4)Cr8Co4 cuboctahedra, faces with two equivalent Co(2)Cr9Co3 cuboctahedra, and faces with four equivalent Co(1)Cr9Co3 cuboctahedra. In the third Co site, Co(3) is bonded to two equivalent Cr(6), four equivalent Cr(2), two equivalent Co(5), and four equivalent Co(1) atoms to form distorted CoCr6Co6 cuboctahedra that share corners with eight equivalent Co(1)Cr9Co3 cuboctahedra, corners with eight equivalent Co(2)Cr9Co3 cuboctahedra, edges with two equivalent Co(3)Cr6Co6 cuboctahedra, and faces with four equivalent Co(1)Cr9Co3 cuboctahedra. In the fourth Co site, Co(4) is bonded to two equivalent Cr(5), two equivalent Cr(7), four equivalent Cr(1), and four equivalent Co(2) atoms to form CoCr8Co4 cuboctahedra that share corners with eight equivalent Co(1)Cr9Co3 cuboctahedra, corners with eight equivalent Co(2)Cr9Co3 cuboctahedra, edges with two equivalent Co(4)Cr8Co4 cuboctahedra, and faces with four equivalent Co(2)Cr9Co3 cuboctahedra. In the fifth Co site, Co(5) is bonded in a distorted linear geometry to one Cr(1), two equivalent Cr(2), two equivalent Cr(3), two equivalent Cr(4), two equivalent Cr(6), one Co(3), two equivalent Co(1), and two equivalent Co(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr3Co2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.494
_cell_length_b   8.643
_cell_length_c   8.643
_cell_angle_alpha   90.703
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   335.670
_cell_formula_units_Z   6
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
  Cr  Cr0  1  0.499  0.103  0.897  1.0
  Cr  Cr1  1  0.499  0.897  0.103  1.0
  Cr  Cr2  1  0.003  0.393  0.393  1.0
  Cr  Cr3  1  0.003  0.607  0.607  1.0
  Cr  Cr4  1  0.498  0.373  0.960  1.0
  Cr  Cr5  1  0.498  0.627  0.040  1.0
  Cr  Cr6  1  0.001  0.130  0.466  1.0
  Cr  Cr7  1  0.001  0.870  0.534  1.0
  Cr  Cr8  1  0.498  0.960  0.373  1.0
  Cr  Cr9  1  0.498  0.040  0.627  1.0
  Cr  Cr10  1  0.001  0.466  0.130  1.0
  Cr  Cr11  1  0.001  0.534  0.870  1.0
  Cr  Cr12  1  0.751  0.183  0.183  1.0
  Cr  Cr13  1  0.751  0.817  0.817  1.0
  Cr  Cr14  1  0.751  0.681  0.319  1.0
  Cr  Cr15  1  0.751  0.319  0.681  1.0
  Cr  Cr16  1  0.251  0.818  0.818  1.0
  Cr  Cr17  1  0.251  0.182  0.182  1.0
  Co  Co18  1  0.496  0.435  0.239  1.0
  Co  Co19  1  0.496  0.565  0.761  1.0
  Co  Co20  1  1.000  0.066  0.738  1.0
  Co  Co21  1  1.000  0.934  0.262  1.0
  Co  Co22  1  0.496  0.239  0.435  1.0
  Co  Co23  1  0.496  0.761  0.565  1.0
  Co  Co24  1  1.000  0.738  0.066  1.0
  Co  Co25  1  1.000  0.262  0.934  1.0
  Co  Co26  1  0.511  0.500  0.500  1.0
  Co  Co27  1  0.001  0.000  0.000  1.0
  Co  Co28  1  0.250  0.316  0.684  1.0
  Co  Co29  1  0.250  0.684  0.316  1.0
[/CIF]
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The compound described by Cr3Co2 crystallizes in the orthorhombic Cmm2 space group. There are seven inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 15-coordinate geometry to one Cr(1), one Cr(6), two equivalent Cr(3), two equivalent Cr(5), two equivalent Cr(7), one Co(5), two equivalent Co(4), and four equivalent Co(2) atoms. In the second Cr site, Cr(2) is bonded in a 15-coordinate geometry to one Cr(2), one Cr(5), one Cr(7), two equivalent Cr(4), two equivalent Cr(6), two equivalent Co(3), two equivalent Co(5), and four equivalent Co(1) atoms. In the third Cr site, Cr(3) is bonded in a 7-coordinate geometry to one Cr(1), one Cr(3), four equivalent Cr(4), one Co(5), two equivalent Co(1), and two equivalent Co(2) atoms. In the fourth Cr site, Cr(4) is bonded in a 14-coordinate geometry to one Cr(2), one Cr(4), one Cr(5), one Cr(6), one Cr(7), four equivalent Cr(3), one Co(5), two equivalent Co(1), and two equivalent Co(2) atoms. In the fifth Cr site, Cr(5) is bonded in a 7-coordinate geometry to one Cr(2), two equivalent Cr(1), two equivalent Cr(4), two equivalent Cr(7), one Co(4), two equivalent Co(1), and two equivalent Co(2) atoms. In the sixth Cr site, Cr(6) is bonded in a 7-coordinate geometry to one Cr(1), two equivalent Cr(2), two equivalent Cr(4), one Co(3), two equivalent Co(1), two equivalent Co(2), and two equivalent Co(5) atoms. In the seventh Cr site, Cr(7) is bonded in a 7-coordinate geometry to one Cr(2), two equivalent Cr(1), two equivalent Cr(4), two equivalent Cr(5), one Co(4), two equivalent Co(1), and two equivalent Co(2) atoms. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to one Cr(5), one Cr(6), one Cr(7), two equivalent Cr(2), two equivalent Cr(3), two equivalent Cr(4), one Co(1), one Co(3), and one Co(5) atom to form distorted CoCr9Co3 cuboctahedra that share corners with two equivalent Co(3)Cr6Co6 cuboctahedra, corners with two equivalent Co(4)Cr8Co4 cuboctahedra, corners with three equivalent Co(1)Cr9Co3 cuboctahedra, corners with four equivalent Co(2)Cr9Co3 cuboctahedra, edges with three equivalent Co(1)Cr9Co3 cuboctahedra,  a faceface with one Co(3)Cr6Co6 cuboctahedra, faces with two equivalent Co(1)Cr9Co3 cuboctahedra, and faces with four equivalent Co(2)Cr9Co3 cuboctahedra. In the second Co site, Co(2) is bonded to one Cr(5), one Cr(6), one Cr(7), two equivalent Cr(1), two equivalent Cr(3), two equivalent Cr(4), one Co(2), one Co(4), and one Co(5) atom to form distorted CoCr9Co3 cuboctahedra that share corners with two equivalent Co(3)Cr6Co6 cuboctahedra, corners with two equivalent Co(4)Cr8Co4 cuboctahedra, corners with three equivalent Co(2)Cr9Co3 cuboctahedra, corners with four equivalent Co(1)Cr9Co3 cuboctahedra, edges with three equivalent Co(2)Cr9Co3 cuboctahedra,  a faceface with one Co(4)Cr8Co4 cuboctahedra, faces with two equivalent Co(2)Cr9Co3 cuboctahedra, and faces with four equivalent Co(1)Cr9Co3 cuboctahedra. In the third Co site, Co(3) is bonded to two equivalent Cr(6), four equivalent Cr(2), two equivalent Co(5), and four equivalent Co(1) atoms to form distorted CoCr6Co6 cuboctahedra that share corners with eight equivalent Co(1)Cr9Co3 cuboctahedra, corners with eight equivalent Co(2)Cr9Co3 cuboctahedra, edges with two equivalent Co(3)Cr6Co6 cuboctahedra, and faces with four equivalent Co(1)Cr9Co3 cuboctahedra. In the fourth Co site, Co(4) is bonded to two equivalent Cr(5), two equivalent Cr(7), four equivalent Cr(1), and four equivalent Co(2) atoms to form CoCr8Co4 cuboctahedra that share corners with eight equivalent Co(1)Cr9Co3 cuboctahedra, corners with eight equivalent Co(2)Cr9Co3 cuboctahedra, edges with two equivalent Co(4)Cr8Co4 cuboctahedra, and faces with four equivalent Co(2)Cr9Co3 cuboctahedra. In the fifth Co site, Co(5) is bonded in a distorted linear geometry to one Cr(1), two equivalent Cr(2), two equivalent Cr(3), two equivalent Cr(4), two equivalent Cr(6), one Co(3), two equivalent Co(1), and two equivalent Co(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr3Co2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.494
_cell_length_b   8.643
_cell_length_c   8.643
_cell_angle_alpha   90.703
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   335.670
_cell_formula_units_Z   6
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
  Cr  Cr0  1  0.499  0.103  0.897  1.0
  Cr  Cr1  1  0.499  0.897  0.103  1.0
  Cr  Cr2  1  0.003  0.393  0.393  1.0
  Cr  Cr3  1  0.003  0.607  0.607  1.0
  Cr  Cr4  1  0.498  0.373  0.960  1.0
  Cr  Cr5  1  0.498  0.627  0.040  1.0
  Cr  Cr6  1  0.001  0.130  0.466  1.0
  Cr  Cr7  1  0.001  0.870  0.534  1.0
  Cr  Cr8  1  0.498  0.960  0.373  1.0
  Cr  Cr9  1  0.498  0.040  0.627  1.0
  Cr  Cr10  1  0.001  0.466  0.130  1.0
  Cr  Cr11  1  0.001  0.534  0.870  1.0
  Cr  Cr12  1  0.751  0.183  0.183  1.0
  Cr  Cr13  1  0.751  0.817  0.817  1.0
  Cr  Cr14  1  0.751  0.681  0.319  1.0
  Cr  Cr15  1  0.751  0.319  0.681  1.0
  Cr  Cr16  1  0.251  0.818  0.818  1.0
  Cr  Cr17  1  0.251  0.182  0.182  1.0
  Co  Co18  1  0.496  0.435  0.239  1.0
  Co  Co19  1  0.496  0.565  0.761  1.0
  Co  Co20  1  1.000  0.066  0.738  1.0
  Co  Co21  1  1.000  0.934  0.262  1.0
  Co  Co22  1  0.496  0.239  0.435  1.0
  Co  Co23  1  0.496  0.761  0.565  1.0
  Co  Co24  1  1.000  0.738  0.066  1.0
  Co  Co25  1  1.000  0.262  0.934  1.0
  Co  Co26  1  0.511  0.500  0.500  1.0
  Co  Co27  1  0.001  0.000  0.000  1.0
  Co  Co28  1  0.250  0.316  0.684  1.0
  Co  Co29  1  0.250  0.684  0.316  1.0
[/CIF]
.