The structure described by CuAgGeSe3 is Stannite-like structured and crystallizes in the monoclinic Cc space group. Ag(1) is bonded to one Se(2), one Se(3), and two equivalent Se(1) atoms to form AgSe4 tetrahedra that share corners with two equivalent Ag(1)Se4 tetrahedra, corners with five equivalent Cu(1)Se4 tetrahedra, and corners with five equivalent Ge(1)Se4 tetrahedra. Cu(1) is bonded to one Se(1), one Se(3), and two equivalent Se(2) atoms to form CuSe4 tetrahedra that share corners with two equivalent Cu(1)Se4 tetrahedra, corners with five equivalent Ag(1)Se4 tetrahedra, and corners with five equivalent Ge(1)Se4 tetrahedra. Ge(1) is bonded to one Se(1), one Se(2), and two equivalent Se(3) atoms to form GeSe4 tetrahedra that share corners with two equivalent Ge(1)Se4 tetrahedra, corners with five equivalent Ag(1)Se4 tetrahedra, and corners with five equivalent Cu(1)Se4 tetrahedra. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Ag(1), one Cu(1), and one Ge(1) atom to form SeCuAg2Ge tetrahedra that share corners with two equivalent Se(1)CuAg2Ge tetrahedra, corners with five equivalent Se(2)Cu2AgGe tetrahedra, and corners with five equivalent Se(3)CuAgGe2 tetrahedra. In the second Se site, Se(2) is bonded to one Ag(1), two equivalent Cu(1), and one Ge(1) atom to form SeCu2AgGe tetrahedra that share corners with two equivalent Se(2)Cu2AgGe tetrahedra, corners with five equivalent Se(1)CuAg2Ge tetrahedra, and corners with five equivalent Se(3)CuAgGe2 tetrahedra. In the third Se site, Se(3) is bonded to one Ag(1), one Cu(1), and two equivalent Ge(1) atoms to form SeCuAgGe2 tetrahedra that share corners with two equivalent Se(3)CuAgGe2 tetrahedra, corners with five equivalent Se(2)Cu2AgGe tetrahedra, and corners with five equivalent Se(1)CuAg2Ge tetrahedra. is represented by the CIF file [CIF]
data_CuAgGeSe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.055
_cell_length_b   7.055
_cell_length_c   7.181
_cell_angle_alpha   79.266
_cell_angle_beta   79.266
_cell_angle_gamma   119.495
_symmetry_Int_Tables_number   1
_cell_volume   289.072
_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
  Cu  Cu0  1  0.974  0.808  0.851  1.0
  Cu  Cu1  1  0.808  0.974  0.351  1.0
  Ag  Ag2  1  0.136  0.646  0.363  1.0
  Ag  Ag3  1  0.646  0.136  0.863  1.0
  Ge  Ge4  1  0.290  0.458  0.881  1.0
  Ge  Ge5  1  0.458  0.290  0.381  1.0
  Se  Se6  1  0.743  0.241  0.469  1.0
  Se  Se7  1  0.241  0.743  0.969  1.0
  Se  Se8  1  0.944  0.079  0.993  1.0
  Se  Se9  1  0.079  0.944  0.493  1.0
  Se  Se10  1  0.597  0.446  1.000  1.0
  Se  Se11  1  0.446  0.597  0.500  1.0
[/CIF]
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The structure described by CuAgGeSe3 is Stannite-like structured and crystallizes in the monoclinic Cc space group. Ag(1) is bonded to one Se(2), one Se(3), and two equivalent Se(1) atoms to form AgSe4 tetrahedra that share corners with two equivalent Ag(1)Se4 tetrahedra, corners with five equivalent Cu(1)Se4 tetrahedra, and corners with five equivalent Ge(1)Se4 tetrahedra. Cu(1) is bonded to one Se(1), one Se(3), and two equivalent Se(2) atoms to form CuSe4 tetrahedra that share corners with two equivalent Cu(1)Se4 tetrahedra, corners with five equivalent Ag(1)Se4 tetrahedra, and corners with five equivalent Ge(1)Se4 tetrahedra. Ge(1) is bonded to one Se(1), one Se(2), and two equivalent Se(3) atoms to form GeSe4 tetrahedra that share corners with two equivalent Ge(1)Se4 tetrahedra, corners with five equivalent Ag(1)Se4 tetrahedra, and corners with five equivalent Cu(1)Se4 tetrahedra. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Ag(1), one Cu(1), and one Ge(1) atom to form SeCuAg2Ge tetrahedra that share corners with two equivalent Se(1)CuAg2Ge tetrahedra, corners with five equivalent Se(2)Cu2AgGe tetrahedra, and corners with five equivalent Se(3)CuAgGe2 tetrahedra. In the second Se site, Se(2) is bonded to one Ag(1), two equivalent Cu(1), and one Ge(1) atom to form SeCu2AgGe tetrahedra that share corners with two equivalent Se(2)Cu2AgGe tetrahedra, corners with five equivalent Se(1)CuAg2Ge tetrahedra, and corners with five equivalent Se(3)CuAgGe2 tetrahedra. In the third Se site, Se(3) is bonded to one Ag(1), one Cu(1), and two equivalent Ge(1) atoms to form SeCuAgGe2 tetrahedra that share corners with two equivalent Se(3)CuAgGe2 tetrahedra, corners with five equivalent Se(2)Cu2AgGe tetrahedra, and corners with five equivalent Se(1)CuAg2Ge tetrahedra. is represented by the CIF file [CIF]
data_CuAgGeSe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.055
_cell_length_b   7.055
_cell_length_c   7.181
_cell_angle_alpha   79.266
_cell_angle_beta   79.266
_cell_angle_gamma   119.495
_symmetry_Int_Tables_number   1
_cell_volume   289.072
_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
  Cu  Cu0  1  0.974  0.808  0.851  1.0
  Cu  Cu1  1  0.808  0.974  0.351  1.0
  Ag  Ag2  1  0.136  0.646  0.363  1.0
  Ag  Ag3  1  0.646  0.136  0.863  1.0
  Ge  Ge4  1  0.290  0.458  0.881  1.0
  Ge  Ge5  1  0.458  0.290  0.381  1.0
  Se  Se6  1  0.743  0.241  0.469  1.0
  Se  Se7  1  0.241  0.743  0.969  1.0
  Se  Se8  1  0.944  0.079  0.993  1.0
  Se  Se9  1  0.079  0.944  0.493  1.0
  Se  Se10  1  0.597  0.446  1.000  1.0
  Se  Se11  1  0.446  0.597  0.500  1.0
[/CIF]
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