The structure described by MgSm2V2O8 crystallizes in the triclinic P1 space group. Mg(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. In the second Sm site, Sm(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Sm(1), and one V(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one Sm(1), and one V(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(1), one Sm(1), one Sm(2), one V(1), and one V(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), one Sm(1), one Sm(2), one V(1), and one V(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Mg(1), one Sm(1), one Sm(2), and one V(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Sm(1), one Sm(2), and one V(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(2), one V(1), and one V(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(2), one V(1), and one V(2) atom. is represented by the CIF file [CIF]
data_Sm2MgV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.195
_cell_length_b   5.400
_cell_length_c   6.983
_cell_angle_alpha   110.686
_cell_angle_beta   109.404
_cell_angle_gamma   95.816
_symmetry_Int_Tables_number   1
_cell_volume   167.472
_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
  Sm  Sm0  1  0.626  0.878  0.255  1.0
  Sm  Sm1  1  0.394  0.142  0.786  1.0
  Mg  Mg2  1  0.312  0.560  0.622  1.0
  V  V3  1  0.091  0.341  0.185  1.0
  V  V4  1  0.913  0.662  0.823  1.0
  O  O5  1  0.356  0.672  0.388  1.0
  O  O6  1  0.033  0.214  0.388  1.0
  O  O7  1  0.230  0.525  0.903  1.0
  O  O8  1  0.675  0.878  0.904  1.0
  O  O9  1  0.627  0.344  0.627  1.0
  O  O10  1  0.002  0.781  0.627  1.0
  O  O11  1  0.800  0.490  0.080  1.0
  O  O12  1  0.279  0.089  0.079  1.0
[/CIF]
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The structure described by MgSm2V2O8 crystallizes in the triclinic P1 space group. Mg(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. In the second Sm site, Sm(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Sm(1), and one V(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one Sm(1), and one V(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(1), one Sm(1), one Sm(2), one V(1), and one V(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), one Sm(1), one Sm(2), one V(1), and one V(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Mg(1), one Sm(1), one Sm(2), and one V(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Sm(1), one Sm(2), and one V(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(2), one V(1), and one V(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(2), one V(1), and one V(2) atom. is represented by the CIF file [CIF]
data_Sm2MgV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.195
_cell_length_b   5.400
_cell_length_c   6.983
_cell_angle_alpha   110.686
_cell_angle_beta   109.404
_cell_angle_gamma   95.816
_symmetry_Int_Tables_number   1
_cell_volume   167.472
_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
  Sm  Sm0  1  0.626  0.878  0.255  1.0
  Sm  Sm1  1  0.394  0.142  0.786  1.0
  Mg  Mg2  1  0.312  0.560  0.622  1.0
  V  V3  1  0.091  0.341  0.185  1.0
  V  V4  1  0.913  0.662  0.823  1.0
  O  O5  1  0.356  0.672  0.388  1.0
  O  O6  1  0.033  0.214  0.388  1.0
  O  O7  1  0.230  0.525  0.903  1.0
  O  O8  1  0.675  0.878  0.904  1.0
  O  O9  1  0.627  0.344  0.627  1.0
  O  O10  1  0.002  0.781  0.627  1.0
  O  O11  1  0.800  0.490  0.080  1.0
  O  O12  1  0.279  0.089  0.079  1.0
[/CIF]
.