The structure described by Ca4RhN4 crystallizes in the triclinic P-1 space group. There are four inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 5-coordinate geometry to one N(1), one N(3), one N(4), and two equivalent N(2) atoms. In the second Ca site, Ca(2) is bonded in a distorted see-saw-like geometry to two equivalent N(2) and two equivalent N(3) atoms. In the third Ca site, Ca(3) is bonded to one N(3), two equivalent N(1), and two equivalent N(4) atoms to form distorted CaN5 trigonal bipyramids that share corners with three equivalent Rh(1)N4 trigonal pyramids, edges with two equivalent Ca(3)N5 trigonal bipyramids, and  an edgeedge with one Rh(1)N4 trigonal pyramid. In the fourth Ca site, Ca(4) is bonded in a 5-coordinate geometry to one N(2), one N(3), one N(4), and two equivalent N(1) atoms. Rh(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form distorted RhN4 trigonal pyramids that share corners with three equivalent Ca(3)N5 trigonal bipyramids and  an edgeedge with one Ca(3)N5 trigonal bipyramid. There are four inequivalent N sites. In the first N site, N(1) is bonded to one Ca(1), two equivalent Ca(3), two equivalent Ca(4), and one Rh(1) atom to form a mixture of corner, face, and edge-sharing NCa5Rh octahedra. The corner-sharing octahedral tilt angles range from 12-66°. In the second N site, N(2) is bonded to one Ca(4), two equivalent Ca(1), two equivalent Ca(2), and one Rh(1) atom to form a mixture of distorted corner, face, and edge-sharing NCa5Rh octahedra. The corner-sharing octahedral tilt angles range from 29-66°. In the third N site, N(3) is bonded to one Ca(1), one Ca(3), one Ca(4), two equivalent Ca(2), and one Rh(1) atom to form a mixture of corner, face, and edge-sharing NCa5Rh octahedra. The corner-sharing octahedral tilt angles range from 12-59°. In the fourth N site, N(4) is bonded in a 5-coordinate geometry to one Ca(1), one Ca(4), two equivalent Ca(3), and one Rh(1) atom. is represented by the CIF file [CIF]
data_Ca4RhN4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.125
_cell_length_b   5.998
_cell_length_c   8.700
_cell_angle_alpha   67.586
_cell_angle_beta   77.923
_cell_angle_gamma   70.131
_symmetry_Int_Tables_number   1
_cell_volume   276.729
_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
  Ca  Ca0  1  0.788  0.584  0.155  1.0
  Ca  Ca1  1  0.212  0.416  0.845  1.0
  Ca  Ca2  1  0.720  0.212  0.987  1.0
  Ca  Ca3  1  0.280  0.788  0.013  1.0
  Ca  Ca4  1  0.732  0.481  0.572  1.0
  Ca  Ca5  1  0.268  0.519  0.428  1.0
  Ca  Ca6  1  0.215  0.955  0.620  1.0
  Ca  Ca7  1  0.785  0.045  0.380  1.0
  Rh  Rh8  1  0.711  0.853  0.759  1.0
  Rh  Rh9  1  0.289  0.147  0.241  1.0
  N  N10  1  0.984  0.679  0.617  1.0
  N  N11  1  0.016  0.321  0.383  1.0
  N  N12  1  0.948  0.852  0.886  1.0
  N  N13  1  0.052  0.148  0.114  1.0
  N  N14  1  0.510  0.620  0.794  1.0
  N  N15  1  0.490  0.380  0.206  1.0
  N  N16  1  0.530  0.835  0.325  1.0
  N  N17  1  0.470  0.165  0.675  1.0
[/CIF]
.
The structure described by Ca4RhN4 crystallizes in the triclinic P-1 space group. There are four inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 5-coordinate geometry to one N(1), one N(3), one N(4), and two equivalent N(2) atoms. In the second Ca site, Ca(2) is bonded in a distorted see-saw-like geometry to two equivalent N(2) and two equivalent N(3) atoms. In the third Ca site, Ca(3) is bonded to one N(3), two equivalent N(1), and two equivalent N(4) atoms to form distorted CaN5 trigonal bipyramids that share corners with three equivalent Rh(1)N4 trigonal pyramids, edges with two equivalent Ca(3)N5 trigonal bipyramids, and  an edgeedge with one Rh(1)N4 trigonal pyramid. In the fourth Ca site, Ca(4) is bonded in a 5-coordinate geometry to one N(2), one N(3), one N(4), and two equivalent N(1) atoms. Rh(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form distorted RhN4 trigonal pyramids that share corners with three equivalent Ca(3)N5 trigonal bipyramids and  an edgeedge with one Ca(3)N5 trigonal bipyramid. There are four inequivalent N sites. In the first N site, N(1) is bonded to one Ca(1), two equivalent Ca(3), two equivalent Ca(4), and one Rh(1) atom to form a mixture of corner, face, and edge-sharing NCa5Rh octahedra. The corner-sharing octahedral tilt angles range from 12-66°. In the second N site, N(2) is bonded to one Ca(4), two equivalent Ca(1), two equivalent Ca(2), and one Rh(1) atom to form a mixture of distorted corner, face, and edge-sharing NCa5Rh octahedra. The corner-sharing octahedral tilt angles range from 29-66°. In the third N site, N(3) is bonded to one Ca(1), one Ca(3), one Ca(4), two equivalent Ca(2), and one Rh(1) atom to form a mixture of corner, face, and edge-sharing NCa5Rh octahedra. The corner-sharing octahedral tilt angles range from 12-59°. In the fourth N site, N(4) is bonded in a 5-coordinate geometry to one Ca(1), one Ca(4), two equivalent Ca(3), and one Rh(1) atom. is represented by the CIF file [CIF]
data_Ca4RhN4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.125
_cell_length_b   5.998
_cell_length_c   8.700
_cell_angle_alpha   67.586
_cell_angle_beta   77.923
_cell_angle_gamma   70.131
_symmetry_Int_Tables_number   1
_cell_volume   276.729
_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
  Ca  Ca0  1  0.788  0.584  0.155  1.0
  Ca  Ca1  1  0.212  0.416  0.845  1.0
  Ca  Ca2  1  0.720  0.212  0.987  1.0
  Ca  Ca3  1  0.280  0.788  0.013  1.0
  Ca  Ca4  1  0.732  0.481  0.572  1.0
  Ca  Ca5  1  0.268  0.519  0.428  1.0
  Ca  Ca6  1  0.215  0.955  0.620  1.0
  Ca  Ca7  1  0.785  0.045  0.380  1.0
  Rh  Rh8  1  0.711  0.853  0.759  1.0
  Rh  Rh9  1  0.289  0.147  0.241  1.0
  N  N10  1  0.984  0.679  0.617  1.0
  N  N11  1  0.016  0.321  0.383  1.0
  N  N12  1  0.948  0.852  0.886  1.0
  N  N13  1  0.052  0.148  0.114  1.0
  N  N14  1  0.510  0.620  0.794  1.0
  N  N15  1  0.490  0.380  0.206  1.0
  N  N16  1  0.530  0.835  0.325  1.0
  N  N17  1  0.470  0.165  0.675  1.0
[/CIF]
.