The compound described by KEu(CO3)2 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 6-coordinate geometry to two equivalent O(3) and four equivalent O(2) atoms. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Eu(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1), one Eu(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1), two equivalent Eu(1), and one C(1) atom. is represented by the CIF file [CIF]
data_KEu(CO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.632
_cell_length_b   6.632
_cell_length_c   7.204
_cell_angle_alpha   75.965
_cell_angle_beta   75.965
_cell_angle_gamma   96.285
_symmetry_Int_Tables_number   1
_cell_volume   293.452
_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
  K  K0  1  0.620  0.380  0.750  1.0
  K  K1  1  0.380  0.620  0.250  1.0
  Eu  Eu2  1  0.098  0.902  0.750  1.0
  Eu  Eu3  1  0.902  0.098  0.250  1.0
  C  C4  1  0.647  0.890  0.757  1.0
  C  C5  1  0.353  0.110  0.243  1.0
  C  C6  1  0.110  0.353  0.743  1.0
  C  C7  1  0.890  0.647  0.257  1.0
  O  O8  1  0.450  0.896  0.779  1.0
  O  O9  1  0.550  0.104  0.221  1.0
  O  O10  1  0.104  0.550  0.721  1.0
  O  O11  1  0.896  0.450  0.279  1.0
  O  O12  1  0.710  0.751  0.880  1.0
  O  O13  1  0.290  0.249  0.120  1.0
  O  O14  1  0.249  0.290  0.620  1.0
  O  O15  1  0.751  0.710  0.380  1.0
  O  O16  1  0.792  0.030  0.612  1.0
  O  O17  1  0.208  0.970  0.388  1.0
  O  O18  1  0.970  0.208  0.888  1.0
  O  O19  1  0.030  0.792  0.112  1.0
[/CIF]
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The compound described by KEu(CO3)2 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 6-coordinate geometry to two equivalent O(3) and four equivalent O(2) atoms. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Eu(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1), one Eu(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1), two equivalent Eu(1), and one C(1) atom. is represented by the CIF file [CIF]
data_KEu(CO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.632
_cell_length_b   6.632
_cell_length_c   7.204
_cell_angle_alpha   75.965
_cell_angle_beta   75.965
_cell_angle_gamma   96.285
_symmetry_Int_Tables_number   1
_cell_volume   293.452
_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
  K  K0  1  0.620  0.380  0.750  1.0
  K  K1  1  0.380  0.620  0.250  1.0
  Eu  Eu2  1  0.098  0.902  0.750  1.0
  Eu  Eu3  1  0.902  0.098  0.250  1.0
  C  C4  1  0.647  0.890  0.757  1.0
  C  C5  1  0.353  0.110  0.243  1.0
  C  C6  1  0.110  0.353  0.743  1.0
  C  C7  1  0.890  0.647  0.257  1.0
  O  O8  1  0.450  0.896  0.779  1.0
  O  O9  1  0.550  0.104  0.221  1.0
  O  O10  1  0.104  0.550  0.721  1.0
  O  O11  1  0.896  0.450  0.279  1.0
  O  O12  1  0.710  0.751  0.880  1.0
  O  O13  1  0.290  0.249  0.120  1.0
  O  O14  1  0.249  0.290  0.620  1.0
  O  O15  1  0.751  0.710  0.380  1.0
  O  O16  1  0.792  0.030  0.612  1.0
  O  O17  1  0.208  0.970  0.388  1.0
  O  O18  1  0.970  0.208  0.888  1.0
  O  O19  1  0.030  0.792  0.112  1.0
[/CIF]
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