The crystal structure described by MgCd4(TcO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one Cd(2), one O(10), one O(3), one O(6), one O(7), and one O(9) atom. There are four inequivalent Tc sites. In the first Tc site, Tc(1) is bonded to one O(1), one O(10), one O(12), one O(4), one O(5), and one O(8) atom to form corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles range from 31-37°. In the second Tc site, Tc(2) is bonded to one O(11), one O(2), one O(3), one O(6), one O(7), and one O(9) atom to form distorted corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles range from 29-42°. In the third Tc site, Tc(3) is bonded to one O(10), one O(12), one O(2), one O(3), one O(6), and one O(7) atom to form distorted corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles range from 29-42°. In the fourth Tc site, Tc(4) is bonded to one O(1), one O(11), one O(4), one O(5), one O(8), and one O(9) atom to form corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles range from 31-38°. There are four inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(6), one O(7), one O(8), and one O(9) atom. In the second Cd site, Cd(2) is bonded in a 7-coordinate geometry to one Mg(1), one O(1), one O(10), one O(2), one O(5), one O(8), and one O(9) atom. In the third Cd site, Cd(3) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the fourth Cd site, Cd(4) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(5), and one O(6) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Tc(1), one Tc(4), and one Cd(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Tc(2), one Tc(3), one Cd(1), and one Cd(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(1), one Tc(2), one Tc(3), one Cd(3), and one Cd(4) atom. In the fourth O site, O(4) is bonded to one Tc(1), one Tc(4), one Cd(3), and one Cd(4) atom to form distorted OCd2Tc2 trigonal pyramids that share  a cornercorner with one O(12)Cd2Tc2 tetrahedra, corners with three equivalent O(11)Cd2Tc2 tetrahedra, corners with three equivalent O(8)Cd3Tc2 trigonal pyramids, and  an edgeedge with one O(12)Cd2Tc2 tetrahedra. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Tc(1), one Tc(4), one Cd(2), one Cd(3), and one Cd(4) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Mg(1), one Tc(2), one Tc(3), one Cd(1), one Cd(3), and one Cd(4) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Mg(1), one Tc(2), one Tc(3), and one Cd(1) atom. In the eighth O site, O(8) is bonded to one Tc(1), one Tc(4), one Cd(1), one Cd(2), and one Cd(3) atom to form a mixture of distorted edge and corner-sharing OCd3Tc2 trigonal pyramids. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Mg(1), one Tc(2), one Tc(4), one Cd(1), and one Cd(2) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Mg(1), one Tc(1), one Tc(3), one Cd(1), and one Cd(2) atom. In the eleventh O site, O(11) is bonded to one Tc(2), one Tc(4), one Cd(3), and one Cd(4) atom to form distorted OCd2Tc2 tetrahedra that share corners with two equivalent O(12)Cd2Tc2 tetrahedra, corners with three equivalent O(4)Cd2Tc2 trigonal pyramids, and  an edgeedge with one O(8)Cd3Tc2 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Tc(1), one Tc(3), one Cd(3), and one Cd(4) atom to form distorted OCd2Tc2 tetrahedra that share corners with two equivalent O(11)Cd2Tc2 tetrahedra,  a cornercorner with one O(4)Cd2Tc2 trigonal pyramid,  an edgeedge with one O(4)Cd2Tc2 trigonal pyramid, and  an edgeedge with one O(8)Cd3Tc2 trigonal pyramid. is represented by the CIF card [CIF]
data_MgCd4(TcO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.564
_cell_length_b   5.644
_cell_length_c   8.076
_cell_angle_alpha   95.304
_cell_angle_beta   89.612
_cell_angle_gamma   89.415
_symmetry_Int_Tables_number   1
_cell_volume   252.550
_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
  Mg  Mg0  1  0.122  0.833  0.386  1.0
  Cd  Cd1  1  0.527  0.543  0.267  1.0
  Cd  Cd2  1  0.984  0.138  0.191  1.0
  Cd  Cd3  1  0.486  0.452  0.757  1.0
  Cd  Cd4  1  0.013  0.945  0.762  1.0
  Tc  Tc5  1  0.002  0.531  0.993  1.0
  Tc  Tc6  1  0.521  0.996  0.517  1.0
  Tc  Tc7  1  0.995  0.452  0.517  1.0
  Tc  Tc8  1  0.496  0.010  0.002  1.0
  O  O9  1  0.795  0.825  0.054  1.0
  O  O10  1  0.705  0.267  0.446  1.0
  O  O11  1  0.196  0.160  0.561  1.0
  O  O12  1  0.291  0.722  0.942  1.0
  O  O13  1  0.204  0.218  0.945  1.0
  O  O14  1  0.298  0.675  0.567  1.0
  O  O15  1  0.799  0.765  0.464  1.0
  O  O16  1  0.694  0.331  0.052  1.0
  O  O17  1  0.381  0.977  0.253  1.0
  O  O18  1  0.116  0.518  0.248  1.0
  O  O19  1  0.615  0.028  0.763  1.0
  O  O20  1  0.885  0.513  0.755  1.0
[/CIF]
.
The crystal structure described by MgCd4(TcO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one Cd(2), one O(10), one O(3), one O(6), one O(7), and one O(9) atom. There are four inequivalent Tc sites. In the first Tc site, Tc(1) is bonded to one O(1), one O(10), one O(12), one O(4), one O(5), and one O(8) atom to form corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles range from 31-37°. In the second Tc site, Tc(2) is bonded to one O(11), one O(2), one O(3), one O(6), one O(7), and one O(9) atom to form distorted corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles range from 29-42°. In the third Tc site, Tc(3) is bonded to one O(10), one O(12), one O(2), one O(3), one O(6), and one O(7) atom to form distorted corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles range from 29-42°. In the fourth Tc site, Tc(4) is bonded to one O(1), one O(11), one O(4), one O(5), one O(8), and one O(9) atom to form corner-sharing TcO6 octahedra. The corner-sharing octahedral tilt angles range from 31-38°. There are four inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(6), one O(7), one O(8), and one O(9) atom. In the second Cd site, Cd(2) is bonded in a 7-coordinate geometry to one Mg(1), one O(1), one O(10), one O(2), one O(5), one O(8), and one O(9) atom. In the third Cd site, Cd(3) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the fourth Cd site, Cd(4) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(5), and one O(6) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Tc(1), one Tc(4), and one Cd(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Tc(2), one Tc(3), one Cd(1), and one Cd(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(1), one Tc(2), one Tc(3), one Cd(3), and one Cd(4) atom. In the fourth O site, O(4) is bonded to one Tc(1), one Tc(4), one Cd(3), and one Cd(4) atom to form distorted OCd2Tc2 trigonal pyramids that share  a cornercorner with one O(12)Cd2Tc2 tetrahedra, corners with three equivalent O(11)Cd2Tc2 tetrahedra, corners with three equivalent O(8)Cd3Tc2 trigonal pyramids, and  an edgeedge with one O(12)Cd2Tc2 tetrahedra. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Tc(1), one Tc(4), one Cd(2), one Cd(3), and one Cd(4) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Mg(1), one Tc(2), one Tc(3), one Cd(1), one Cd(3), and one Cd(4) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Mg(1), one Tc(2), one Tc(3), and one Cd(1) atom. In the eighth O site, O(8) is bonded to one Tc(1), one Tc(4), one Cd(1), one Cd(2), and one Cd(3) atom to form a mixture of distorted edge and corner-sharing OCd3Tc2 trigonal pyramids. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Mg(1), one Tc(2), one Tc(4), one Cd(1), and one Cd(2) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Mg(1), one Tc(1), one Tc(3), one Cd(1), and one Cd(2) atom. In the eleventh O site, O(11) is bonded to one Tc(2), one Tc(4), one Cd(3), and one Cd(4) atom to form distorted OCd2Tc2 tetrahedra that share corners with two equivalent O(12)Cd2Tc2 tetrahedra, corners with three equivalent O(4)Cd2Tc2 trigonal pyramids, and  an edgeedge with one O(8)Cd3Tc2 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Tc(1), one Tc(3), one Cd(3), and one Cd(4) atom to form distorted OCd2Tc2 tetrahedra that share corners with two equivalent O(11)Cd2Tc2 tetrahedra,  a cornercorner with one O(4)Cd2Tc2 trigonal pyramid,  an edgeedge with one O(4)Cd2Tc2 trigonal pyramid, and  an edgeedge with one O(8)Cd3Tc2 trigonal pyramid. is represented by the CIF card [CIF]
data_MgCd4(TcO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.564
_cell_length_b   5.644
_cell_length_c   8.076
_cell_angle_alpha   95.304
_cell_angle_beta   89.612
_cell_angle_gamma   89.415
_symmetry_Int_Tables_number   1
_cell_volume   252.550
_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
  Mg  Mg0  1  0.122  0.833  0.386  1.0
  Cd  Cd1  1  0.527  0.543  0.267  1.0
  Cd  Cd2  1  0.984  0.138  0.191  1.0
  Cd  Cd3  1  0.486  0.452  0.757  1.0
  Cd  Cd4  1  0.013  0.945  0.762  1.0
  Tc  Tc5  1  0.002  0.531  0.993  1.0
  Tc  Tc6  1  0.521  0.996  0.517  1.0
  Tc  Tc7  1  0.995  0.452  0.517  1.0
  Tc  Tc8  1  0.496  0.010  0.002  1.0
  O  O9  1  0.795  0.825  0.054  1.0
  O  O10  1  0.705  0.267  0.446  1.0
  O  O11  1  0.196  0.160  0.561  1.0
  O  O12  1  0.291  0.722  0.942  1.0
  O  O13  1  0.204  0.218  0.945  1.0
  O  O14  1  0.298  0.675  0.567  1.0
  O  O15  1  0.799  0.765  0.464  1.0
  O  O16  1  0.694  0.331  0.052  1.0
  O  O17  1  0.381  0.977  0.253  1.0
  O  O18  1  0.116  0.518  0.248  1.0
  O  O19  1  0.615  0.028  0.763  1.0
  O  O20  1  0.885  0.513  0.755  1.0
[/CIF]
.