The material described by YMn2Al(BO4)2 crystallizes in the monoclinic Pc space group. Y(1) is bonded in a 7-coordinate geometry to one O(3), one O(5), one O(7), two equivalent O(1), and two equivalent O(4) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(3), two equivalent O(5), and two equivalent O(8) atoms to form MnO6 octahedra that share corners with two equivalent Al(1)O5 trigonal bipyramids and edges with two equivalent Mn(1)O6 octahedra. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to one O(2), one O(4), two equivalent O(6), and two equivalent O(7) atoms. Al(1) is bonded to one O(2), one O(4), one O(6), and two equivalent O(3) atoms to form AlO5 trigonal bipyramids that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Al(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 66-67°. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(5), and one O(7) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1), one Mn(1), and one B(1) atom to form distorted OY2MnB tetrahedra that share corners with two equivalent O(4)Y2MnAl tetrahedra, corners with two equivalent O(1)Y2MnB tetrahedra, corners with three equivalent O(3)YMnAl2 tetrahedra, corners with three equivalent O(7)YMn2B trigonal pyramids, and  an edgeedge with one O(4)Y2MnAl tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(2), one Al(1), and one B(2) atom. In the third O site, O(3) is bonded to one Y(1), one Mn(1), and two equivalent Al(1) atoms to form OYMnAl2 tetrahedra that share corners with two equivalent O(3)YMnAl2 tetrahedra, corners with three equivalent O(1)Y2MnB tetrahedra,  a cornercorner with one O(7)YMn2B trigonal pyramid, and edges with two equivalent O(4)Y2MnAl tetrahedra. In the fourth O site, O(4) is bonded to two equivalent Y(1), one Mn(2), and one Al(1) atom to form OY2MnAl tetrahedra that share corners with two equivalent O(4)Y2MnAl tetrahedra, corners with two equivalent O(1)Y2MnB tetrahedra,  an edgeedge with one O(1)Y2MnB tetrahedra, edges with two equivalent O(3)YMnAl2 tetrahedra, and edges with two equivalent O(7)YMn2B trigonal pyramids. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Y(1), two equivalent Mn(1), and one B(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Mn(2), one Al(1), and one B(2) atom. In the seventh O site, O(7) is bonded to one Y(1), two equivalent Mn(2), and one B(1) atom to form distorted OYMn2B trigonal pyramids that share  a cornercorner with one O(3)YMnAl2 tetrahedra, corners with three equivalent O(1)Y2MnB tetrahedra, corners with two equivalent O(7)YMn2B trigonal pyramids, and edges with two equivalent O(4)Y2MnAl tetrahedra. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to two equivalent Mn(1) and one B(2) atom. is represented by the CIF file [CIF]
data_YMn2Al(BO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.374
_cell_length_b   9.392
_cell_length_c   9.892
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.464
_symmetry_Int_Tables_number   1
_cell_volume   313.433
_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
  Y  Y0  1  0.270  0.088  0.391  1.0
  Y  Y1  1  0.770  0.588  0.109  1.0
  Mn  Mn2  1  0.276  0.687  0.420  1.0
  Mn  Mn3  1  0.776  0.187  0.080  1.0
  Mn  Mn4  1  0.746  0.324  0.603  1.0
  Mn  Mn5  1  0.246  0.824  0.897  1.0
  Al  Al6  1  0.807  0.925  0.618  1.0
  Al  Al7  1  0.307  0.425  0.882  1.0
  B  B8  1  0.275  0.373  0.314  1.0
  B  B9  1  0.775  0.873  0.186  1.0
  B  B10  1  0.686  0.628  0.669  1.0
  B  B11  1  0.186  0.128  0.831  1.0
  O  O12  1  0.271  0.511  0.266  1.0
  O  O13  1  0.771  0.011  0.234  1.0
  O  O14  1  0.564  0.503  0.732  1.0
  O  O15  1  0.064  0.003  0.768  1.0
  O  O16  1  0.290  0.885  0.529  1.0
  O  O17  1  0.790  0.385  0.971  1.0
  O  O18  1  0.769  0.103  0.533  1.0
  O  O19  1  0.269  0.603  0.967  1.0
  O  O20  1  0.303  0.261  0.223  1.0
  O  O21  1  0.803  0.761  0.277  1.0
  O  O22  1  0.716  0.761  0.733  1.0
  O  O23  1  0.216  0.261  0.767  1.0
  O  O24  1  0.249  0.336  0.450  1.0
  O  O25  1  0.749  0.836  0.050  1.0
  O  O26  1  0.779  0.615  0.534  1.0
  O  O27  1  0.279  0.115  0.966  1.0
[/CIF]
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The material described by YMn2Al(BO4)2 crystallizes in the monoclinic Pc space group. Y(1) is bonded in a 7-coordinate geometry to one O(3), one O(5), one O(7), two equivalent O(1), and two equivalent O(4) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(3), two equivalent O(5), and two equivalent O(8) atoms to form MnO6 octahedra that share corners with two equivalent Al(1)O5 trigonal bipyramids and edges with two equivalent Mn(1)O6 octahedra. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to one O(2), one O(4), two equivalent O(6), and two equivalent O(7) atoms. Al(1) is bonded to one O(2), one O(4), one O(6), and two equivalent O(3) atoms to form AlO5 trigonal bipyramids that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Al(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 66-67°. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(5), and one O(7) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1), one Mn(1), and one B(1) atom to form distorted OY2MnB tetrahedra that share corners with two equivalent O(4)Y2MnAl tetrahedra, corners with two equivalent O(1)Y2MnB tetrahedra, corners with three equivalent O(3)YMnAl2 tetrahedra, corners with three equivalent O(7)YMn2B trigonal pyramids, and  an edgeedge with one O(4)Y2MnAl tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(2), one Al(1), and one B(2) atom. In the third O site, O(3) is bonded to one Y(1), one Mn(1), and two equivalent Al(1) atoms to form OYMnAl2 tetrahedra that share corners with two equivalent O(3)YMnAl2 tetrahedra, corners with three equivalent O(1)Y2MnB tetrahedra,  a cornercorner with one O(7)YMn2B trigonal pyramid, and edges with two equivalent O(4)Y2MnAl tetrahedra. In the fourth O site, O(4) is bonded to two equivalent Y(1), one Mn(2), and one Al(1) atom to form OY2MnAl tetrahedra that share corners with two equivalent O(4)Y2MnAl tetrahedra, corners with two equivalent O(1)Y2MnB tetrahedra,  an edgeedge with one O(1)Y2MnB tetrahedra, edges with two equivalent O(3)YMnAl2 tetrahedra, and edges with two equivalent O(7)YMn2B trigonal pyramids. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Y(1), two equivalent Mn(1), and one B(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Mn(2), one Al(1), and one B(2) atom. In the seventh O site, O(7) is bonded to one Y(1), two equivalent Mn(2), and one B(1) atom to form distorted OYMn2B trigonal pyramids that share  a cornercorner with one O(3)YMnAl2 tetrahedra, corners with three equivalent O(1)Y2MnB tetrahedra, corners with two equivalent O(7)YMn2B trigonal pyramids, and edges with two equivalent O(4)Y2MnAl tetrahedra. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to two equivalent Mn(1) and one B(2) atom. is represented by the CIF file [CIF]
data_YMn2Al(BO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.374
_cell_length_b   9.392
_cell_length_c   9.892
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.464
_symmetry_Int_Tables_number   1
_cell_volume   313.433
_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
  Y  Y0  1  0.270  0.088  0.391  1.0
  Y  Y1  1  0.770  0.588  0.109  1.0
  Mn  Mn2  1  0.276  0.687  0.420  1.0
  Mn  Mn3  1  0.776  0.187  0.080  1.0
  Mn  Mn4  1  0.746  0.324  0.603  1.0
  Mn  Mn5  1  0.246  0.824  0.897  1.0
  Al  Al6  1  0.807  0.925  0.618  1.0
  Al  Al7  1  0.307  0.425  0.882  1.0
  B  B8  1  0.275  0.373  0.314  1.0
  B  B9  1  0.775  0.873  0.186  1.0
  B  B10  1  0.686  0.628  0.669  1.0
  B  B11  1  0.186  0.128  0.831  1.0
  O  O12  1  0.271  0.511  0.266  1.0
  O  O13  1  0.771  0.011  0.234  1.0
  O  O14  1  0.564  0.503  0.732  1.0
  O  O15  1  0.064  0.003  0.768  1.0
  O  O16  1  0.290  0.885  0.529  1.0
  O  O17  1  0.790  0.385  0.971  1.0
  O  O18  1  0.769  0.103  0.533  1.0
  O  O19  1  0.269  0.603  0.967  1.0
  O  O20  1  0.303  0.261  0.223  1.0
  O  O21  1  0.803  0.761  0.277  1.0
  O  O22  1  0.716  0.761  0.733  1.0
  O  O23  1  0.216  0.261  0.767  1.0
  O  O24  1  0.249  0.336  0.450  1.0
  O  O25  1  0.749  0.836  0.050  1.0
  O  O26  1  0.779  0.615  0.534  1.0
  O  O27  1  0.279  0.115  0.966  1.0
[/CIF]
.