The structure described by MgAg4(AsS)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted trigonal planar geometry to two equivalent Ag(2), two equivalent Ag(4), one As(1), one S(1), and two equivalent S(3) atoms. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one As(2), one S(2), and two equivalent S(4) atoms to form AgAsS3 tetrahedra that share corners with two equivalent Ag(1)AsS3 tetrahedra, corners with four equivalent Ag(3)AsS3 tetrahedra, and corners with four equivalent As(3)AgAs2S trigonal pyramids. In the second Ag site, Ag(2) is bonded in a 6-coordinate geometry to two equivalent Mg(1), one As(1), one S(1), and two equivalent S(3) atoms. In the third Ag site, Ag(3) is bonded to one As(4), one S(4), and two equivalent S(2) atoms to form AgAsS3 tetrahedra that share  a cornercorner with one S(3)Mg2Ag2As square pyramid, corners with two equivalent Ag(3)AsS3 tetrahedra, corners with four equivalent Ag(1)AsS3 tetrahedra, and  a cornercorner with one As(3)AgAs2S trigonal pyramid. In the fourth Ag site, Ag(4) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one As(3), and two equivalent S(1) atoms. There are four inequivalent As sites. In the first As site, As(1) is bonded in a 5-coordinate geometry to one Mg(1), one Ag(2), two equivalent As(4), and one S(2) atom. In the second As site, As(2) is bonded in a 4-coordinate geometry to one Ag(1), two equivalent As(3), and one S(1) atom. In the third As site, As(3) is bonded to one Ag(4), two equivalent As(2), and one S(4) atom to form distorted AsAgAs2S trigonal pyramids that share  a cornercorner with one Ag(3)AsS3 tetrahedra, corners with four equivalent Ag(1)AsS3 tetrahedra, and corners with two equivalent As(3)AgAs2S trigonal pyramids. In the fourth As site, As(4) is bonded in a 4-coordinate geometry to one Ag(3), two equivalent As(1), and one S(3) atom. There are four inequivalent S sites. In the first S site, S(1) is bonded in a distorted pentagonal planar geometry to one Mg(1), one Ag(2), two equivalent Ag(4), and one As(2) atom. In the second S site, S(2) is bonded to one Ag(1), two equivalent Ag(3), and one As(1) atom to form corner-sharing SAg3As tetrahedra. In the third S site, S(3) is bonded to two equivalent Mg(1), two equivalent Ag(2), and one As(4) atom to form distorted SMg2Ag2As square pyramids that share  a cornercorner with one Ag(3)AsS3 tetrahedra and edges with two equivalent S(3)Mg2Ag2As square pyramids. In the fourth S site, S(4) is bonded to one Ag(3), two equivalent Ag(1), and one As(3) atom to form corner-sharing SAg3As tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgAg4(AsS)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.403
_cell_length_b   5.511
_cell_length_c   4.449
_cell_angle_alpha   89.981
_cell_angle_beta   90.000
_cell_angle_gamma   91.595
_symmetry_Int_Tables_number   1
_cell_volume   303.995
_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  0.268  0.889  0.248  1.0
  Ag  Ag1  1  0.843  0.042  0.247  1.0
  Ag  Ag2  1  0.367  0.404  0.247  1.0
  Ag  Ag3  1  0.673  0.519  0.747  1.0
  Ag  Ag4  1  0.114  0.037  0.747  1.0
  As  As5  1  0.507  0.074  0.248  1.0
  As  As6  1  0.981  0.412  0.249  1.0
  As  As7  1  0.010  0.627  0.748  1.0
  As  As8  1  0.529  0.864  0.748  1.0
  S  S9  1  0.164  0.276  0.247  1.0
  S  S10  1  0.666  0.284  0.248  1.0
  S  S11  1  0.350  0.723  0.748  1.0
  S  S12  1  0.845  0.796  0.748  1.0
[/CIF]
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The structure described by MgAg4(AsS)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted trigonal planar geometry to two equivalent Ag(2), two equivalent Ag(4), one As(1), one S(1), and two equivalent S(3) atoms. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one As(2), one S(2), and two equivalent S(4) atoms to form AgAsS3 tetrahedra that share corners with two equivalent Ag(1)AsS3 tetrahedra, corners with four equivalent Ag(3)AsS3 tetrahedra, and corners with four equivalent As(3)AgAs2S trigonal pyramids. In the second Ag site, Ag(2) is bonded in a 6-coordinate geometry to two equivalent Mg(1), one As(1), one S(1), and two equivalent S(3) atoms. In the third Ag site, Ag(3) is bonded to one As(4), one S(4), and two equivalent S(2) atoms to form AgAsS3 tetrahedra that share  a cornercorner with one S(3)Mg2Ag2As square pyramid, corners with two equivalent Ag(3)AsS3 tetrahedra, corners with four equivalent Ag(1)AsS3 tetrahedra, and  a cornercorner with one As(3)AgAs2S trigonal pyramid. In the fourth Ag site, Ag(4) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one As(3), and two equivalent S(1) atoms. There are four inequivalent As sites. In the first As site, As(1) is bonded in a 5-coordinate geometry to one Mg(1), one Ag(2), two equivalent As(4), and one S(2) atom. In the second As site, As(2) is bonded in a 4-coordinate geometry to one Ag(1), two equivalent As(3), and one S(1) atom. In the third As site, As(3) is bonded to one Ag(4), two equivalent As(2), and one S(4) atom to form distorted AsAgAs2S trigonal pyramids that share  a cornercorner with one Ag(3)AsS3 tetrahedra, corners with four equivalent Ag(1)AsS3 tetrahedra, and corners with two equivalent As(3)AgAs2S trigonal pyramids. In the fourth As site, As(4) is bonded in a 4-coordinate geometry to one Ag(3), two equivalent As(1), and one S(3) atom. There are four inequivalent S sites. In the first S site, S(1) is bonded in a distorted pentagonal planar geometry to one Mg(1), one Ag(2), two equivalent Ag(4), and one As(2) atom. In the second S site, S(2) is bonded to one Ag(1), two equivalent Ag(3), and one As(1) atom to form corner-sharing SAg3As tetrahedra. In the third S site, S(3) is bonded to two equivalent Mg(1), two equivalent Ag(2), and one As(4) atom to form distorted SMg2Ag2As square pyramids that share  a cornercorner with one Ag(3)AsS3 tetrahedra and edges with two equivalent S(3)Mg2Ag2As square pyramids. In the fourth S site, S(4) is bonded to one Ag(3), two equivalent Ag(1), and one As(3) atom to form corner-sharing SAg3As tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgAg4(AsS)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.403
_cell_length_b   5.511
_cell_length_c   4.449
_cell_angle_alpha   89.981
_cell_angle_beta   90.000
_cell_angle_gamma   91.595
_symmetry_Int_Tables_number   1
_cell_volume   303.995
_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  0.268  0.889  0.248  1.0
  Ag  Ag1  1  0.843  0.042  0.247  1.0
  Ag  Ag2  1  0.367  0.404  0.247  1.0
  Ag  Ag3  1  0.673  0.519  0.747  1.0
  Ag  Ag4  1  0.114  0.037  0.747  1.0
  As  As5  1  0.507  0.074  0.248  1.0
  As  As6  1  0.981  0.412  0.249  1.0
  As  As7  1  0.010  0.627  0.748  1.0
  As  As8  1  0.529  0.864  0.748  1.0
  S  S9  1  0.164  0.276  0.247  1.0
  S  S10  1  0.666  0.284  0.248  1.0
  S  S11  1  0.350  0.723  0.748  1.0
  S  S12  1  0.845  0.796  0.748  1.0
[/CIF]
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