The compound described by Mn3Cr3Ni16Si7 crystallizes in the trigonal R3m space group. Cr(1) is bonded in a 16-coordinate geometry to two equivalent Cr(1), two equivalent Mn(1), one Ni(3), one Ni(4), one Ni(7), one Ni(8), two equivalent Ni(2), two equivalent Ni(6), two equivalent Si(2), and two equivalent Si(3) atoms. Mn(1) is bonded in a 16-coordinate geometry to two equivalent Cr(1), two equivalent Mn(1), one Ni(1), one Ni(2), one Ni(5), one Ni(6), two equivalent Ni(4), two equivalent Ni(8), two equivalent Si(2), and two equivalent Si(3) atoms. There are eight inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Mn(1), three equivalent Ni(2), three equivalent Ni(6), and three equivalent Si(2) atoms. In the second Ni site, Ni(2) is bonded in a 12-coordinate geometry to two equivalent Cr(1), one Mn(1), one Ni(1), one Ni(5), two equivalent Ni(2), two equivalent Ni(6), one Si(2), and two equivalent Si(3) atoms. In the third Ni site, Ni(3) is bonded in a 12-coordinate geometry to three equivalent Cr(1), three equivalent Ni(4), three equivalent Ni(8), and three equivalent Si(2) atoms. In the fourth Ni site, Ni(4) is bonded in a 12-coordinate geometry to one Cr(1), two equivalent Mn(1), one Ni(3), one Ni(7), two equivalent Ni(4), two equivalent Ni(8), one Si(2), and two equivalent Si(3) atoms. In the fifth Ni site, Ni(5) is bonded in a 13-coordinate geometry to three equivalent Mn(1), three equivalent Ni(2), three equivalent Ni(8), one Si(1), and three equivalent Si(3) atoms. In the sixth Ni site, Ni(6) is bonded in a 13-coordinate geometry to two equivalent Cr(1), one Mn(1), one Ni(1), one Ni(7), two equivalent Ni(2), two equivalent Ni(8), one Si(1), one Si(3), and two equivalent Si(2) atoms. In the seventh Ni site, Ni(7) is bonded in a 13-coordinate geometry to three equivalent Cr(1), three equivalent Ni(4), three equivalent Ni(6), one Si(1), and three equivalent Si(3) atoms. In the eighth Ni site, Ni(8) is bonded in a 13-coordinate geometry to one Cr(1), two equivalent Mn(1), one Ni(3), one Ni(5), two equivalent Ni(4), two equivalent Ni(6), one Si(1), one Si(3), and two equivalent Si(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a body-centered cubic geometry to one Ni(5), one Ni(7), three equivalent Ni(6), and three equivalent Ni(8) atoms. In the second Si site, Si(2) is bonded to two equivalent Cr(1), two equivalent Mn(1), one Ni(1), one Ni(2), one Ni(3), one Ni(4), two equivalent Ni(6), and two equivalent Ni(8) atoms to form a mixture of face and corner-sharing SiMn2Cr2Ni8 cuboctahedra. In the third Si site, Si(3) is bonded to two equivalent Cr(1), two equivalent Mn(1), one Ni(5), one Ni(6), one Ni(7), one Ni(8), two equivalent Ni(2), and two equivalent Ni(4) atoms to form a mixture of face and corner-sharing SiMn2Cr2Ni8 cuboctahedra. is represented by the CIF card [CIF]
data_Mn3Cr3Si7Ni16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.842
_cell_length_b   7.842
_cell_length_c   7.842
_cell_angle_alpha   60.034
_cell_angle_beta   60.034
_cell_angle_gamma   60.034
_symmetry_Int_Tables_number   1
_cell_volume   341.269
_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
  Mn  Mn0  1  0.196  0.803  0.196  1.0
  Mn  Mn1  1  0.803  0.196  0.196  1.0
  Mn  Mn2  1  0.196  0.196  0.803  1.0
  Cr  Cr3  1  0.803  0.195  0.803  1.0
  Cr  Cr4  1  0.195  0.803  0.803  1.0
  Cr  Cr5  1  0.803  0.803  0.195  1.0
  Si  Si6  1  0.501  0.501  0.501  1.0
  Si  Si7  1  0.001  0.503  0.001  1.0
  Si  Si8  1  0.503  0.001  0.001  1.0
  Si  Si9  1  0.001  0.001  0.503  1.0
  Si  Si10  1  0.501  0.997  0.501  1.0
  Si  Si11  1  0.997  0.501  0.501  1.0
  Si  Si12  1  0.501  0.501  0.997  1.0
  Ni  Ni13  1  0.165  0.165  0.165  1.0
  Ni  Ni14  1  0.167  0.167  0.503  1.0
  Ni  Ni15  1  0.503  0.167  0.167  1.0
  Ni  Ni16  1  0.167  0.503  0.167  1.0
  Ni  Ni17  1  0.833  0.833  0.833  1.0
  Ni  Ni18  1  0.836  0.836  0.495  1.0
  Ni  Ni19  1  0.495  0.836  0.836  1.0
  Ni  Ni20  1  0.836  0.495  0.836  1.0
  Ni  Ni21  1  0.383  0.383  0.383  1.0
  Ni  Ni22  1  0.382  0.382  0.853  1.0
  Ni  Ni23  1  0.853  0.382  0.382  1.0
  Ni  Ni24  1  0.382  0.853  0.382  1.0
  Ni  Ni25  1  0.618  0.618  0.618  1.0
  Ni  Ni26  1  0.617  0.617  0.147  1.0
  Ni  Ni27  1  0.147  0.617  0.617  1.0
  Ni  Ni28  1  0.617  0.147  0.617  1.0
[/CIF]
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The compound described by Mn3Cr3Ni16Si7 crystallizes in the trigonal R3m space group. Cr(1) is bonded in a 16-coordinate geometry to two equivalent Cr(1), two equivalent Mn(1), one Ni(3), one Ni(4), one Ni(7), one Ni(8), two equivalent Ni(2), two equivalent Ni(6), two equivalent Si(2), and two equivalent Si(3) atoms. Mn(1) is bonded in a 16-coordinate geometry to two equivalent Cr(1), two equivalent Mn(1), one Ni(1), one Ni(2), one Ni(5), one Ni(6), two equivalent Ni(4), two equivalent Ni(8), two equivalent Si(2), and two equivalent Si(3) atoms. There are eight inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Mn(1), three equivalent Ni(2), three equivalent Ni(6), and three equivalent Si(2) atoms. In the second Ni site, Ni(2) is bonded in a 12-coordinate geometry to two equivalent Cr(1), one Mn(1), one Ni(1), one Ni(5), two equivalent Ni(2), two equivalent Ni(6), one Si(2), and two equivalent Si(3) atoms. In the third Ni site, Ni(3) is bonded in a 12-coordinate geometry to three equivalent Cr(1), three equivalent Ni(4), three equivalent Ni(8), and three equivalent Si(2) atoms. In the fourth Ni site, Ni(4) is bonded in a 12-coordinate geometry to one Cr(1), two equivalent Mn(1), one Ni(3), one Ni(7), two equivalent Ni(4), two equivalent Ni(8), one Si(2), and two equivalent Si(3) atoms. In the fifth Ni site, Ni(5) is bonded in a 13-coordinate geometry to three equivalent Mn(1), three equivalent Ni(2), three equivalent Ni(8), one Si(1), and three equivalent Si(3) atoms. In the sixth Ni site, Ni(6) is bonded in a 13-coordinate geometry to two equivalent Cr(1), one Mn(1), one Ni(1), one Ni(7), two equivalent Ni(2), two equivalent Ni(8), one Si(1), one Si(3), and two equivalent Si(2) atoms. In the seventh Ni site, Ni(7) is bonded in a 13-coordinate geometry to three equivalent Cr(1), three equivalent Ni(4), three equivalent Ni(6), one Si(1), and three equivalent Si(3) atoms. In the eighth Ni site, Ni(8) is bonded in a 13-coordinate geometry to one Cr(1), two equivalent Mn(1), one Ni(3), one Ni(5), two equivalent Ni(4), two equivalent Ni(6), one Si(1), one Si(3), and two equivalent Si(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a body-centered cubic geometry to one Ni(5), one Ni(7), three equivalent Ni(6), and three equivalent Ni(8) atoms. In the second Si site, Si(2) is bonded to two equivalent Cr(1), two equivalent Mn(1), one Ni(1), one Ni(2), one Ni(3), one Ni(4), two equivalent Ni(6), and two equivalent Ni(8) atoms to form a mixture of face and corner-sharing SiMn2Cr2Ni8 cuboctahedra. In the third Si site, Si(3) is bonded to two equivalent Cr(1), two equivalent Mn(1), one Ni(5), one Ni(6), one Ni(7), one Ni(8), two equivalent Ni(2), and two equivalent Ni(4) atoms to form a mixture of face and corner-sharing SiMn2Cr2Ni8 cuboctahedra. is represented by the CIF card [CIF]
data_Mn3Cr3Si7Ni16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.842
_cell_length_b   7.842
_cell_length_c   7.842
_cell_angle_alpha   60.034
_cell_angle_beta   60.034
_cell_angle_gamma   60.034
_symmetry_Int_Tables_number   1
_cell_volume   341.269
_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
  Mn  Mn0  1  0.196  0.803  0.196  1.0
  Mn  Mn1  1  0.803  0.196  0.196  1.0
  Mn  Mn2  1  0.196  0.196  0.803  1.0
  Cr  Cr3  1  0.803  0.195  0.803  1.0
  Cr  Cr4  1  0.195  0.803  0.803  1.0
  Cr  Cr5  1  0.803  0.803  0.195  1.0
  Si  Si6  1  0.501  0.501  0.501  1.0
  Si  Si7  1  0.001  0.503  0.001  1.0
  Si  Si8  1  0.503  0.001  0.001  1.0
  Si  Si9  1  0.001  0.001  0.503  1.0
  Si  Si10  1  0.501  0.997  0.501  1.0
  Si  Si11  1  0.997  0.501  0.501  1.0
  Si  Si12  1  0.501  0.501  0.997  1.0
  Ni  Ni13  1  0.165  0.165  0.165  1.0
  Ni  Ni14  1  0.167  0.167  0.503  1.0
  Ni  Ni15  1  0.503  0.167  0.167  1.0
  Ni  Ni16  1  0.167  0.503  0.167  1.0
  Ni  Ni17  1  0.833  0.833  0.833  1.0
  Ni  Ni18  1  0.836  0.836  0.495  1.0
  Ni  Ni19  1  0.495  0.836  0.836  1.0
  Ni  Ni20  1  0.836  0.495  0.836  1.0
  Ni  Ni21  1  0.383  0.383  0.383  1.0
  Ni  Ni22  1  0.382  0.382  0.853  1.0
  Ni  Ni23  1  0.853  0.382  0.382  1.0
  Ni  Ni24  1  0.382  0.853  0.382  1.0
  Ni  Ni25  1  0.618  0.618  0.618  1.0
  Ni  Ni26  1  0.617  0.617  0.147  1.0
  Ni  Ni27  1  0.147  0.617  0.617  1.0
  Ni  Ni28  1  0.617  0.147  0.617  1.0
[/CIF]
.