The compound described by La2CaB10O19 crystallizes in the monoclinic C2 space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(8) atoms. La(1) is bonded in a 10-coordinate geometry to one O(1), one O(3), one O(6), one O(7), one O(8), one O(9), two equivalent O(10), and two equivalent O(5) atoms. There are five inequivalent B sites. In the first B site, B(1) is bonded to one O(2), one O(3), one O(7), and one O(9) atom to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(5), and one O(9) atom. In the third B site, B(3) is bonded to one O(10), one O(4), one O(5), and one O(7) atom to form corner-sharing BO4 tetrahedra. In the fourth B site, B(4) is bonded to one O(1), one O(10), one O(3), and one O(6) atom to form corner-sharing BO4 tetrahedra. In the fifth B site, B(5) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(8) atom. There are ten inequivalent O sites. In the first O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent La(1) and two equivalent B(4) atoms. In the second O site, O(7) is bonded in a distorted bent 120 degrees geometry to one La(1), one B(1), and one B(3) atom. In the third O site, O(8) is bonded in a 2-coordinate geometry to one Ca(1), one La(1), and one B(5) atom. In the fourth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one La(1), one B(1), and one B(2) atom. In the fifth O site, O(10) is bonded in a bent 120 degrees geometry to two equivalent La(1), one B(3), and one B(4) atom. In the sixth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one La(1), one B(2), and one B(4) atom. In the seventh O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Ca(1), one B(1), and one B(5) atom. In the eighth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ca(1), one La(1), one B(1), and one B(4) atom. In the ninth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ca(1), one B(3), and one B(5) atom. In the tenth O site, O(5) is bonded in a bent 120 degrees geometry to two equivalent La(1), one B(2), and one B(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaLa2B10O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.480
_cell_length_b   6.480
_cell_length_c   9.188
_cell_angle_alpha   88.565
_cell_angle_beta   88.565
_cell_angle_gamma   61.512
_symmetry_Int_Tables_number   1
_cell_volume   338.950
_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
  Ca  Ca0  1  0.188  0.812  0.500  1.0
  La  La1  1  0.165  0.160  0.856  1.0
  La  La2  1  0.840  0.835  0.144  1.0
  B  B3  1  0.555  0.674  0.730  1.0
  B  B4  1  0.637  0.284  0.839  1.0
  B  B5  1  0.161  0.186  0.208  1.0
  B  B6  1  0.241  0.625  0.874  1.0
  B  B7  1  0.747  0.788  0.529  1.0
  B  B8  1  0.375  0.759  0.126  1.0
  B  B9  1  0.716  0.363  0.161  1.0
  B  B10  1  0.212  0.253  0.471  1.0
  B  B11  1  0.326  0.445  0.270  1.0
  B  B12  1  0.814  0.839  0.792  1.0
  O  O13  1  0.410  0.367  0.887  1.0
  O  O14  1  0.595  0.702  0.573  1.0
  O  O15  1  0.308  0.725  0.746  1.0
  O  O16  1  0.856  0.853  0.636  1.0
  O  O17  1  0.298  0.405  0.427  1.0
  O  O18  1  0.948  0.196  0.134  1.0
  O  O19  1  0.235  0.765  0.000  1.0
  O  O20  1  0.160  0.408  0.181  1.0
  O  O21  1  0.147  0.144  0.364  1.0
  O  O22  1  0.804  0.052  0.866  1.0
  O  O23  1  0.275  0.692  0.254  1.0
  O  O24  1  0.805  0.807  0.389  1.0
  O  O25  1  0.592  0.840  0.819  1.0
  O  O26  1  0.193  0.195  0.611  1.0
  O  O27  1  0.719  0.425  0.778  1.0
  O  O28  1  0.365  0.990  0.136  1.0
  O  O29  1  0.633  0.590  0.113  1.0
  O  O30  1  0.010  0.635  0.864  1.0
  O  O31  1  0.575  0.281  0.222  1.0
[/CIF]
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The compound described by La2CaB10O19 crystallizes in the monoclinic C2 space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(8) atoms. La(1) is bonded in a 10-coordinate geometry to one O(1), one O(3), one O(6), one O(7), one O(8), one O(9), two equivalent O(10), and two equivalent O(5) atoms. There are five inequivalent B sites. In the first B site, B(1) is bonded to one O(2), one O(3), one O(7), and one O(9) atom to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(5), and one O(9) atom. In the third B site, B(3) is bonded to one O(10), one O(4), one O(5), and one O(7) atom to form corner-sharing BO4 tetrahedra. In the fourth B site, B(4) is bonded to one O(1), one O(10), one O(3), and one O(6) atom to form corner-sharing BO4 tetrahedra. In the fifth B site, B(5) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(8) atom. There are ten inequivalent O sites. In the first O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent La(1) and two equivalent B(4) atoms. In the second O site, O(7) is bonded in a distorted bent 120 degrees geometry to one La(1), one B(1), and one B(3) atom. In the third O site, O(8) is bonded in a 2-coordinate geometry to one Ca(1), one La(1), and one B(5) atom. In the fourth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one La(1), one B(1), and one B(2) atom. In the fifth O site, O(10) is bonded in a bent 120 degrees geometry to two equivalent La(1), one B(3), and one B(4) atom. In the sixth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one La(1), one B(2), and one B(4) atom. In the seventh O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Ca(1), one B(1), and one B(5) atom. In the eighth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ca(1), one La(1), one B(1), and one B(4) atom. In the ninth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ca(1), one B(3), and one B(5) atom. In the tenth O site, O(5) is bonded in a bent 120 degrees geometry to two equivalent La(1), one B(2), and one B(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaLa2B10O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.480
_cell_length_b   6.480
_cell_length_c   9.188
_cell_angle_alpha   88.565
_cell_angle_beta   88.565
_cell_angle_gamma   61.512
_symmetry_Int_Tables_number   1
_cell_volume   338.950
_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
  Ca  Ca0  1  0.188  0.812  0.500  1.0
  La  La1  1  0.165  0.160  0.856  1.0
  La  La2  1  0.840  0.835  0.144  1.0
  B  B3  1  0.555  0.674  0.730  1.0
  B  B4  1  0.637  0.284  0.839  1.0
  B  B5  1  0.161  0.186  0.208  1.0
  B  B6  1  0.241  0.625  0.874  1.0
  B  B7  1  0.747  0.788  0.529  1.0
  B  B8  1  0.375  0.759  0.126  1.0
  B  B9  1  0.716  0.363  0.161  1.0
  B  B10  1  0.212  0.253  0.471  1.0
  B  B11  1  0.326  0.445  0.270  1.0
  B  B12  1  0.814  0.839  0.792  1.0
  O  O13  1  0.410  0.367  0.887  1.0
  O  O14  1  0.595  0.702  0.573  1.0
  O  O15  1  0.308  0.725  0.746  1.0
  O  O16  1  0.856  0.853  0.636  1.0
  O  O17  1  0.298  0.405  0.427  1.0
  O  O18  1  0.948  0.196  0.134  1.0
  O  O19  1  0.235  0.765  0.000  1.0
  O  O20  1  0.160  0.408  0.181  1.0
  O  O21  1  0.147  0.144  0.364  1.0
  O  O22  1  0.804  0.052  0.866  1.0
  O  O23  1  0.275  0.692  0.254  1.0
  O  O24  1  0.805  0.807  0.389  1.0
  O  O25  1  0.592  0.840  0.819  1.0
  O  O26  1  0.193  0.195  0.611  1.0
  O  O27  1  0.719  0.425  0.778  1.0
  O  O28  1  0.365  0.990  0.136  1.0
  O  O29  1  0.633  0.590  0.113  1.0
  O  O30  1  0.010  0.635  0.864  1.0
  O  O31  1  0.575  0.281  0.222  1.0
[/CIF]
.