The material described by CrZn(GeO3)2 is Esseneite structured and crystallizes in the triclinic P1 space group. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(14), one O(16), one O(18), one O(19), one O(22), and one O(24) atom to form CrO6 octahedra that share  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(4)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(8)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Cr(4)O6 octahedra. In the second Cr site, Cr(2) is bonded to one O(10), one O(12), one O(18), one O(20), one O(22), and one O(23) atom to form distorted CrO6 octahedra that share  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(4)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  a cornercorner with one Ge(8)O4 tetrahedra, corners with two equivalent Ge(6)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. In the third Cr site, Cr(3) is bonded to one O(13), one O(15), one O(17), one O(20), one O(21), and one O(23) atom to form distorted CrO6 octahedra that share  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(4)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra, corners with two equivalent Ge(1)O4 tetrahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Cr(4)O6 octahedra. In the fourth Cr site, Cr(4) is bonded to one O(11), one O(17), one O(19), one O(21), one O(24), and one O(9) atom to form CrO6 octahedra that share  a cornercorner with one Ge(1)O4 tetrahedra,  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  a cornercorner with one Ge(8)O4 tetrahedra, corners with two equivalent Ge(5)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a rectangular see-saw-like geometry to one O(10), one O(11), one O(18), and one O(19) atom. In the second Zn site, Zn(2) is bonded in a rectangular see-saw-like geometry to one O(12), one O(17), one O(20), and one O(9) atom. In the third Zn site, Zn(3) is bonded in a rectangular see-saw-like geometry to one O(14), one O(15), one O(22), and one O(23) atom. In the fourth Zn site, Zn(4) is bonded in a rectangular see-saw-like geometry to one O(13), one O(16), one O(21), and one O(24) atom. There are eight inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(15), one O(17), and one O(8) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(4)O6 octahedra, corners with two equivalent Cr(3)O6 octahedra,  a cornercorner with one Ge(7)O4 tetrahedra, and  a cornercorner with one Ge(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the second Ge site, Ge(2) is bonded to one O(16), one O(18), one O(2), and one O(7) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(2)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra,  a cornercorner with one Ge(7)O4 tetrahedra, and  a cornercorner with one Ge(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the third Ge site, Ge(3) is bonded to one O(13), one O(19), one O(3), and one O(5) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and  a cornercorner with one Ge(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the fourth Ge site, Ge(4) is bonded to one O(14), one O(20), one O(4), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and  a cornercorner with one Ge(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the fifth Ge site, Ge(5) is bonded to one O(11), one O(21), one O(4), and one O(5) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(3)O6 octahedra, corners with two equivalent Cr(4)O6 octahedra,  a cornercorner with one Ge(3)O4 tetrahedra, and  a cornercorner with one Ge(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the sixth Ge site, Ge(6) is bonded to one O(12), one O(22), one O(3), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra,  a cornercorner with one Ge(3)O4 tetrahedra, and  a cornercorner with one Ge(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the seventh Ge site, Ge(7) is bonded to one O(1), one O(23), one O(7), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Ge(1)O4 tetrahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the eighth Ge site, Ge(8) is bonded to one O(10), one O(2), one O(24), and one O(8) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Ge(1)O4 tetrahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(7) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(8) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(6) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(6) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(7) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(8) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Cr(4), one Zn(2), and one Ge(7) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Cr(2), one Zn(1), and one Ge(8) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Cr(4), one Zn(1), and one Ge(5) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Cr(2), one Zn(2), and one Ge(6) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Cr(3), one Zn(4), and one Ge(3) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(3), and one Ge(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Cr(3), one Zn(3), and one Ge(1) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(4), and one Ge(2) atom. In the seventeenth O site, O(17) is bonded to one Cr(3), one Cr(4), one Zn(2), and one Ge(1) atom to form distorted edge-sharing OZnCr2Ge trigonal pyramids. In the eighteenth O site, O(18) is bonded to one Cr(1), one Cr(2), one Zn(1), and one Ge(2) atom to form distorted edge-sharing OZnCr2Ge trigonal pyramids. In the nineteenth O site, O(19) is bonded in a distorted rectangular see-saw-like geometry to one Cr(1), one Cr(4), one Zn(1), and one Ge(3) atom. In the twentieth O site, O(20) is bonded in a distorted rectangular see-saw-like geometry to one Cr(2), one Cr(3), one Zn(2), and one Ge(4) atom. In the twenty-first O site, O(21) is bonded to one Cr(3), one Cr(4), one Zn(4), and one Ge(5) atom to form distorted edge-sharing OZnCr2Ge trigonal pyramids. In the twenty-second O site, O(22) is bonded to one Cr(1), one Cr(2), one Zn(3), and one Ge(6) atom to form distorted edge-sharing OZnCr2Ge trigonal pyramids. In the twenty-third O site, O(23) is bonded in a distorted rectangular see-saw-like geometry to one Cr(2), one Cr(3), one Zn(3), and one Ge(7) atom. In the twenty-fourth O site, O(24) is bonded in a distorted rectangular see-saw-like geometry to one Cr(1), one Cr(4), one Zn(4), and one Ge(8) atom. is represented by the CIF card [CIF]
data_ZnCr(GeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.426
_cell_length_b   6.863
_cell_length_c   7.218
_cell_angle_alpha   87.040
_cell_angle_beta   75.490
_cell_angle_gamma   77.480
_symmetry_Int_Tables_number   1
_cell_volume   254.016
_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
  Cr  Cr0  1  0.749  0.905  0.100  1.0
  Cr  Cr1  1  0.251  0.095  0.900  1.0
  Ge  Ge2  1  0.752  0.389  0.215  1.0
  Ge  Ge3  1  0.756  0.788  0.610  1.0
  Ge  Ge4  1  0.248  0.611  0.785  1.0
  Ge  Ge5  1  0.244  0.212  0.390  1.0
  O  O6  1  0.519  0.308  0.407  1.0
  O  O7  1  0.971  0.589  0.701  1.0
  O  O8  1  0.481  0.692  0.593  1.0
  O  O9  1  0.029  0.411  0.299  1.0
  O  O10  1  0.100  0.144  0.621  1.0
  O  O11  1  0.384  0.374  0.860  1.0
  O  O12  1  0.900  0.856  0.379  1.0
  O  O13  1  0.616  0.626  0.140  1.0
  O  O14  1  0.857  0.202  0.030  1.0
  O  O15  1  0.637  0.976  0.789  1.0
  O  O16  1  0.143  0.798  0.970  1.0
  O  O17  1  0.363  0.024  0.211  1.0
  Zn  Zn18  1  0.751  0.251  0.762  1.0
  Zn  Zn19  1  0.249  0.749  0.238  1.0
[/CIF]
.
The material described by CrZn(GeO3)2 is Esseneite structured and crystallizes in the triclinic P1 space group. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(14), one O(16), one O(18), one O(19), one O(22), and one O(24) atom to form CrO6 octahedra that share  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(4)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(8)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Cr(4)O6 octahedra. In the second Cr site, Cr(2) is bonded to one O(10), one O(12), one O(18), one O(20), one O(22), and one O(23) atom to form distorted CrO6 octahedra that share  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(4)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  a cornercorner with one Ge(8)O4 tetrahedra, corners with two equivalent Ge(6)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. In the third Cr site, Cr(3) is bonded to one O(13), one O(15), one O(17), one O(20), one O(21), and one O(23) atom to form distorted CrO6 octahedra that share  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(4)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra, corners with two equivalent Ge(1)O4 tetrahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Cr(4)O6 octahedra. In the fourth Cr site, Cr(4) is bonded to one O(11), one O(17), one O(19), one O(21), one O(24), and one O(9) atom to form CrO6 octahedra that share  a cornercorner with one Ge(1)O4 tetrahedra,  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  a cornercorner with one Ge(8)O4 tetrahedra, corners with two equivalent Ge(5)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a rectangular see-saw-like geometry to one O(10), one O(11), one O(18), and one O(19) atom. In the second Zn site, Zn(2) is bonded in a rectangular see-saw-like geometry to one O(12), one O(17), one O(20), and one O(9) atom. In the third Zn site, Zn(3) is bonded in a rectangular see-saw-like geometry to one O(14), one O(15), one O(22), and one O(23) atom. In the fourth Zn site, Zn(4) is bonded in a rectangular see-saw-like geometry to one O(13), one O(16), one O(21), and one O(24) atom. There are eight inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(15), one O(17), and one O(8) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(4)O6 octahedra, corners with two equivalent Cr(3)O6 octahedra,  a cornercorner with one Ge(7)O4 tetrahedra, and  a cornercorner with one Ge(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the second Ge site, Ge(2) is bonded to one O(16), one O(18), one O(2), and one O(7) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(2)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra,  a cornercorner with one Ge(7)O4 tetrahedra, and  a cornercorner with one Ge(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the third Ge site, Ge(3) is bonded to one O(13), one O(19), one O(3), and one O(5) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and  a cornercorner with one Ge(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the fourth Ge site, Ge(4) is bonded to one O(14), one O(20), one O(4), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and  a cornercorner with one Ge(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the fifth Ge site, Ge(5) is bonded to one O(11), one O(21), one O(4), and one O(5) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(3)O6 octahedra, corners with two equivalent Cr(4)O6 octahedra,  a cornercorner with one Ge(3)O4 tetrahedra, and  a cornercorner with one Ge(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the sixth Ge site, Ge(6) is bonded to one O(12), one O(22), one O(3), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra,  a cornercorner with one Ge(3)O4 tetrahedra, and  a cornercorner with one Ge(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the seventh Ge site, Ge(7) is bonded to one O(1), one O(23), one O(7), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Ge(1)O4 tetrahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the eighth Ge site, Ge(8) is bonded to one O(10), one O(2), one O(24), and one O(8) atom to form GeO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Ge(1)O4 tetrahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-62°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(7) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(8) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(6) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(6) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(7) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(8) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Cr(4), one Zn(2), and one Ge(7) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Cr(2), one Zn(1), and one Ge(8) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Cr(4), one Zn(1), and one Ge(5) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Cr(2), one Zn(2), and one Ge(6) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Cr(3), one Zn(4), and one Ge(3) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(3), and one Ge(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Cr(3), one Zn(3), and one Ge(1) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(4), and one Ge(2) atom. In the seventeenth O site, O(17) is bonded to one Cr(3), one Cr(4), one Zn(2), and one Ge(1) atom to form distorted edge-sharing OZnCr2Ge trigonal pyramids. In the eighteenth O site, O(18) is bonded to one Cr(1), one Cr(2), one Zn(1), and one Ge(2) atom to form distorted edge-sharing OZnCr2Ge trigonal pyramids. In the nineteenth O site, O(19) is bonded in a distorted rectangular see-saw-like geometry to one Cr(1), one Cr(4), one Zn(1), and one Ge(3) atom. In the twentieth O site, O(20) is bonded in a distorted rectangular see-saw-like geometry to one Cr(2), one Cr(3), one Zn(2), and one Ge(4) atom. In the twenty-first O site, O(21) is bonded to one Cr(3), one Cr(4), one Zn(4), and one Ge(5) atom to form distorted edge-sharing OZnCr2Ge trigonal pyramids. In the twenty-second O site, O(22) is bonded to one Cr(1), one Cr(2), one Zn(3), and one Ge(6) atom to form distorted edge-sharing OZnCr2Ge trigonal pyramids. In the twenty-third O site, O(23) is bonded in a distorted rectangular see-saw-like geometry to one Cr(2), one Cr(3), one Zn(3), and one Ge(7) atom. In the twenty-fourth O site, O(24) is bonded in a distorted rectangular see-saw-like geometry to one Cr(1), one Cr(4), one Zn(4), and one Ge(8) atom. is represented by the CIF card [CIF]
data_ZnCr(GeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.426
_cell_length_b   6.863
_cell_length_c   7.218
_cell_angle_alpha   87.040
_cell_angle_beta   75.490
_cell_angle_gamma   77.480
_symmetry_Int_Tables_number   1
_cell_volume   254.016
_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
  Cr  Cr0  1  0.749  0.905  0.100  1.0
  Cr  Cr1  1  0.251  0.095  0.900  1.0
  Ge  Ge2  1  0.752  0.389  0.215  1.0
  Ge  Ge3  1  0.756  0.788  0.610  1.0
  Ge  Ge4  1  0.248  0.611  0.785  1.0
  Ge  Ge5  1  0.244  0.212  0.390  1.0
  O  O6  1  0.519  0.308  0.407  1.0
  O  O7  1  0.971  0.589  0.701  1.0
  O  O8  1  0.481  0.692  0.593  1.0
  O  O9  1  0.029  0.411  0.299  1.0
  O  O10  1  0.100  0.144  0.621  1.0
  O  O11  1  0.384  0.374  0.860  1.0
  O  O12  1  0.900  0.856  0.379  1.0
  O  O13  1  0.616  0.626  0.140  1.0
  O  O14  1  0.857  0.202  0.030  1.0
  O  O15  1  0.637  0.976  0.789  1.0
  O  O16  1  0.143  0.798  0.970  1.0
  O  O17  1  0.363  0.024  0.211  1.0
  Zn  Zn18  1  0.751  0.251  0.762  1.0
  Zn  Zn19  1  0.249  0.749  0.238  1.0
[/CIF]
.