The structure described by NaCaScZn(SiO3)4 is Esseneite-derived structured and crystallizes in the monoclinic C2 space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. Sc(1) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form ScO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Si(2)O4 tetrahedra, and edges with two equivalent Zn(1)O6 octahedra. Zn(1) is bonded to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form ZnO6 octahedra that share corners with two equivalent Si(2)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and edges with two equivalent Sc(1)O6 octahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Sc(1)O6 octahedra, corners with two equivalent Zn(1)O6 octahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 35-58°. In the second Si site, Si(2) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Zn(1)O6 octahedra, corners with two equivalent Sc(1)O6 octahedra, and corners with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-59°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one Ca(1), one Si(1), and one Si(2) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Na(1), one Ca(1), one Si(1), and one Si(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Ca(1), one Zn(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Na(1), one Sc(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Sc(1), one Zn(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ca(1), one Sc(1), one Zn(1), and one Si(2) atom. is represented by the CIF file [CIF]
data_NaCaScZn(SiO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.748
_cell_length_b   6.748
_cell_length_c   5.353
_cell_angle_alpha   77.953
_cell_angle_beta   77.953
_cell_angle_gamma   84.864
_symmetry_Int_Tables_number   1
_cell_volume   232.832
_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
  Na  Na0  1  0.302  0.698  0.500  1.0
  Ca  Ca1  1  0.700  0.300  0.000  1.0
  Sc  Sc2  1  0.102  0.898  0.000  1.0
  Zn  Zn3  1  0.901  0.099  0.500  1.0
  Si  Si4  1  0.802  0.622  0.485  1.0
  Si  Si5  1  0.378  0.198  0.515  1.0
  Si  Si6  1  0.198  0.379  0.013  1.0
  Si  Si7  1  0.621  0.802  0.987  1.0
  O  O8  1  0.666  0.634  0.253  1.0
  O  O9  1  0.366  0.334  0.747  1.0
  O  O10  1  0.338  0.361  0.240  1.0
  O  O11  1  0.639  0.662  0.760  1.0
  O  O12  1  0.884  0.392  0.572  1.0
  O  O13  1  0.608  0.116  0.428  1.0
  O  O14  1  0.111  0.609  0.939  1.0
  O  O15  1  0.391  0.889  0.061  1.0
  O  O16  1  0.965  0.799  0.392  1.0
  O  O17  1  0.201  0.035  0.608  1.0
  O  O18  1  0.031  0.204  0.099  1.0
  O  O19  1  0.796  0.969  0.901  1.0
[/CIF]
.
The structure described by NaCaScZn(SiO3)4 is Esseneite-derived structured and crystallizes in the monoclinic C2 space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. Sc(1) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form ScO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Si(2)O4 tetrahedra, and edges with two equivalent Zn(1)O6 octahedra. Zn(1) is bonded to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form ZnO6 octahedra that share corners with two equivalent Si(2)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and edges with two equivalent Sc(1)O6 octahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Sc(1)O6 octahedra, corners with two equivalent Zn(1)O6 octahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 35-58°. In the second Si site, Si(2) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Zn(1)O6 octahedra, corners with two equivalent Sc(1)O6 octahedra, and corners with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-59°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one Ca(1), one Si(1), and one Si(2) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Na(1), one Ca(1), one Si(1), and one Si(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Ca(1), one Zn(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Na(1), one Sc(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Sc(1), one Zn(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ca(1), one Sc(1), one Zn(1), and one Si(2) atom. is represented by the CIF file [CIF]
data_NaCaScZn(SiO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.748
_cell_length_b   6.748
_cell_length_c   5.353
_cell_angle_alpha   77.953
_cell_angle_beta   77.953
_cell_angle_gamma   84.864
_symmetry_Int_Tables_number   1
_cell_volume   232.832
_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
  Na  Na0  1  0.302  0.698  0.500  1.0
  Ca  Ca1  1  0.700  0.300  0.000  1.0
  Sc  Sc2  1  0.102  0.898  0.000  1.0
  Zn  Zn3  1  0.901  0.099  0.500  1.0
  Si  Si4  1  0.802  0.622  0.485  1.0
  Si  Si5  1  0.378  0.198  0.515  1.0
  Si  Si6  1  0.198  0.379  0.013  1.0
  Si  Si7  1  0.621  0.802  0.987  1.0
  O  O8  1  0.666  0.634  0.253  1.0
  O  O9  1  0.366  0.334  0.747  1.0
  O  O10  1  0.338  0.361  0.240  1.0
  O  O11  1  0.639  0.662  0.760  1.0
  O  O12  1  0.884  0.392  0.572  1.0
  O  O13  1  0.608  0.116  0.428  1.0
  O  O14  1  0.111  0.609  0.939  1.0
  O  O15  1  0.391  0.889  0.061  1.0
  O  O16  1  0.965  0.799  0.392  1.0
  O  O17  1  0.201  0.035  0.608  1.0
  O  O18  1  0.031  0.204  0.099  1.0
  O  O19  1  0.796  0.969  0.901  1.0
[/CIF]
.