The structure described by MgCu4H8(CO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted T-shaped geometry to one O(3), one O(4), and one O(9) atom. In the second Cu site, Cu(2) is bonded in a distorted T-shaped geometry to one O(10), one O(3), and one O(7) atom. In the third Cu site, Cu(3) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(7), one O(8), and one O(9) atom. In the fourth Cu site, Cu(4) is bonded in a rectangular see-saw-like geometry to one O(10), one O(7), one O(8), and one O(9) atom. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one H(1), one O(1), and one O(5) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one H(2), one O(2), and one O(6) atom. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(9) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(10) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mg(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cu(1), one Cu(2), and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Cu(1), and one H(4) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Mg(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Mg(1) and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Cu(2), one Cu(3), one Cu(4), and one H(5) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Mg(1), one Cu(3), one Cu(4), and one H(6) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(3), one Cu(4), and one H(7) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Cu(2), one Cu(3), one Cu(4), and one H(8) atom. is represented by the CIF card [CIF]
data_MgCu4H8(CO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.952
_cell_length_b   6.168
_cell_length_c   7.776
_cell_angle_alpha   93.473
_cell_angle_beta   111.297
_cell_angle_gamma   92.194
_symmetry_Int_Tables_number   1
_cell_volume   264.929
_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  0.240  0.152  0.512  1.0
  Cu  Cu1  1  0.017  0.012  0.040  1.0
  Cu  Cu2  1  0.989  0.571  0.972  1.0
  Cu  Cu3  1  0.462  0.804  0.994  1.0
  Cu  Cu4  1  0.513  0.295  0.984  1.0
  H  H5  1  0.479  0.689  0.635  1.0
  H  H6  1  0.674  0.363  0.398  1.0
  H  H7  1  0.870  0.864  0.718  1.0
  H  H8  1  0.161  0.344  0.214  1.0
  H  H9  1  0.847  0.552  0.227  1.0
  H  H10  1  0.142  0.085  0.795  1.0
  H  H11  1  0.754  0.059  0.238  1.0
  H  H12  1  0.213  0.513  0.768  1.0
  C  C13  1  0.292  0.669  0.531  1.0
  C  C14  1  0.717  0.234  0.496  1.0
  O  O15  1  0.215  0.819  0.427  1.0
  O  O16  1  0.610  0.227  0.609  1.0
  O  O17  1  0.841  0.827  0.829  1.0
  O  O18  1  0.210  0.197  0.243  1.0
  O  O19  1  0.165  0.494  0.528  1.0
  O  O20  1  0.871  0.101  0.485  1.0
  O  O21  1  0.760  0.537  0.092  1.0
  O  O22  1  0.302  0.089  0.787  1.0
  O  O23  1  0.688  0.044  0.100  1.0
  O  O24  1  0.271  0.532  0.906  1.0
[/CIF]
.
The structure described by MgCu4H8(CO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted T-shaped geometry to one O(3), one O(4), and one O(9) atom. In the second Cu site, Cu(2) is bonded in a distorted T-shaped geometry to one O(10), one O(3), and one O(7) atom. In the third Cu site, Cu(3) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(7), one O(8), and one O(9) atom. In the fourth Cu site, Cu(4) is bonded in a rectangular see-saw-like geometry to one O(10), one O(7), one O(8), and one O(9) atom. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one H(1), one O(1), and one O(5) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one H(2), one O(2), and one O(6) atom. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(9) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(10) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mg(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cu(1), one Cu(2), and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Cu(1), and one H(4) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Mg(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Mg(1) and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Cu(2), one Cu(3), one Cu(4), and one H(5) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Mg(1), one Cu(3), one Cu(4), and one H(6) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(3), one Cu(4), and one H(7) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Cu(2), one Cu(3), one Cu(4), and one H(8) atom. is represented by the CIF card [CIF]
data_MgCu4H8(CO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.952
_cell_length_b   6.168
_cell_length_c   7.776
_cell_angle_alpha   93.473
_cell_angle_beta   111.297
_cell_angle_gamma   92.194
_symmetry_Int_Tables_number   1
_cell_volume   264.929
_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  0.240  0.152  0.512  1.0
  Cu  Cu1  1  0.017  0.012  0.040  1.0
  Cu  Cu2  1  0.989  0.571  0.972  1.0
  Cu  Cu3  1  0.462  0.804  0.994  1.0
  Cu  Cu4  1  0.513  0.295  0.984  1.0
  H  H5  1  0.479  0.689  0.635  1.0
  H  H6  1  0.674  0.363  0.398  1.0
  H  H7  1  0.870  0.864  0.718  1.0
  H  H8  1  0.161  0.344  0.214  1.0
  H  H9  1  0.847  0.552  0.227  1.0
  H  H10  1  0.142  0.085  0.795  1.0
  H  H11  1  0.754  0.059  0.238  1.0
  H  H12  1  0.213  0.513  0.768  1.0
  C  C13  1  0.292  0.669  0.531  1.0
  C  C14  1  0.717  0.234  0.496  1.0
  O  O15  1  0.215  0.819  0.427  1.0
  O  O16  1  0.610  0.227  0.609  1.0
  O  O17  1  0.841  0.827  0.829  1.0
  O  O18  1  0.210  0.197  0.243  1.0
  O  O19  1  0.165  0.494  0.528  1.0
  O  O20  1  0.871  0.101  0.485  1.0
  O  O21  1  0.760  0.537  0.092  1.0
  O  O22  1  0.302  0.089  0.787  1.0
  O  O23  1  0.688  0.044  0.100  1.0
  O  O24  1  0.271  0.532  0.906  1.0
[/CIF]
.