The compound described by V3As2 crystallizes in the tetragonal P4/m space group. There are five inequivalent V sites. In the first V site, V(1) is bonded to two equivalent V(5), one As(1), and four equivalent As(2) atoms to form distorted VV2As5 square pyramids that share corners with four equivalent V(3)As6 octahedra, corners with two equivalent V(1)V2As5 square pyramids, corners with four equivalent V(2)As5 square pyramids, edges with two equivalent V(5)V8As4 cuboctahedra,  an edgeedge with one V(3)As6 octahedra, edges with two equivalent V(2)As5 square pyramids, edges with five equivalent V(1)V2As5 square pyramids,  a faceface with one V(3)As6 octahedra, and faces with four equivalent V(1)V2As5 square pyramids. The corner-sharing octahedral tilt angles range from 22-55°. In the second V site, V(2) is bonded to one As(2) and four equivalent As(1) atoms to form distorted VAs5 square pyramids that share  a cornercorner with one V(5)V8As4 cuboctahedra, corners with two equivalent V(3)As6 octahedra, corners with four equivalent V(2)As5 square pyramids, corners with four equivalent V(1)V2As5 square pyramids, edges with two equivalent V(3)As6 octahedra, edges with two equivalent V(1)V2As5 square pyramids, and edges with four equivalent V(2)As5 square pyramids. The corner-sharing octahedral tilt angles are 45°. In the third V site, V(3) is bonded to two equivalent As(1) and four equivalent As(2) atoms to form VAs6 octahedra that share corners with four equivalent V(5)V8As4 cuboctahedra, corners with four equivalent V(2)As5 square pyramids, corners with eight equivalent V(1)V2As5 square pyramids, edges with two equivalent V(3)As6 octahedra, edges with two equivalent V(1)V2As5 square pyramids, edges with four equivalent V(2)As5 square pyramids, and faces with two equivalent V(1)V2As5 square pyramids. In the fourth V site, V(4) is bonded in a distorted square co-planar geometry to four equivalent As(1) atoms. In the fifth V site, V(5) is bonded to eight equivalent V(1) and four equivalent As(2) atoms to form distorted VV8As4 cuboctahedra that share corners with eight equivalent V(3)As6 octahedra, corners with four equivalent V(2)As5 square pyramids, edges with eight equivalent V(1)V2As5 square pyramids, and faces with two equivalent V(5)V8As4 cuboctahedra. The corner-sharing octahedral tilt angles are 43°. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 7-coordinate geometry to one V(1), one V(3), one V(4), and four equivalent V(2) atoms. In the second As site, As(2) is bonded in a 8-coordinate geometry to one V(2), one V(5), two equivalent V(3), and four equivalent V(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_V3As2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.318
_cell_length_b   9.546
_cell_length_c   9.547
_cell_angle_alpha   89.996
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   302.395
_cell_formula_units_Z   4
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
  V  V0  1  0.500  0.126  0.186  1.0
  V  V1  1  0.500  0.814  0.126  1.0
  V  V2  1  0.500  0.186  0.874  1.0
  V  V3  1  0.500  0.874  0.814  1.0
  V  V4  1  0.000  0.398  0.289  1.0
  V  V5  1  0.000  0.711  0.398  1.0
  V  V6  1  0.000  0.289  0.602  1.0
  V  V7  1  0.000  0.602  0.711  1.0
  V  V8  1  0.500  0.000  0.500  1.0
  V  V9  1  0.500  0.500  0.000  1.0
  V  V10  1  0.500  0.500  0.500  1.0
  V  V11  1  0.000  0.000  0.000  1.0
  As  As12  1  0.500  0.245  0.412  1.0
  As  As13  1  0.500  0.588  0.245  1.0
  As  As14  1  0.500  0.412  0.755  1.0
  As  As15  1  0.500  0.755  0.588  1.0
  As  As16  1  0.000  0.283  0.048  1.0
  As  As17  1  0.000  0.952  0.283  1.0
  As  As18  1  0.000  0.048  0.717  1.0
  As  As19  1  0.000  0.717  0.952  1.0
[/CIF]
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The compound described by V3As2 crystallizes in the tetragonal P4/m space group. There are five inequivalent V sites. In the first V site, V(1) is bonded to two equivalent V(5), one As(1), and four equivalent As(2) atoms to form distorted VV2As5 square pyramids that share corners with four equivalent V(3)As6 octahedra, corners with two equivalent V(1)V2As5 square pyramids, corners with four equivalent V(2)As5 square pyramids, edges with two equivalent V(5)V8As4 cuboctahedra,  an edgeedge with one V(3)As6 octahedra, edges with two equivalent V(2)As5 square pyramids, edges with five equivalent V(1)V2As5 square pyramids,  a faceface with one V(3)As6 octahedra, and faces with four equivalent V(1)V2As5 square pyramids. The corner-sharing octahedral tilt angles range from 22-55°. In the second V site, V(2) is bonded to one As(2) and four equivalent As(1) atoms to form distorted VAs5 square pyramids that share  a cornercorner with one V(5)V8As4 cuboctahedra, corners with two equivalent V(3)As6 octahedra, corners with four equivalent V(2)As5 square pyramids, corners with four equivalent V(1)V2As5 square pyramids, edges with two equivalent V(3)As6 octahedra, edges with two equivalent V(1)V2As5 square pyramids, and edges with four equivalent V(2)As5 square pyramids. The corner-sharing octahedral tilt angles are 45°. In the third V site, V(3) is bonded to two equivalent As(1) and four equivalent As(2) atoms to form VAs6 octahedra that share corners with four equivalent V(5)V8As4 cuboctahedra, corners with four equivalent V(2)As5 square pyramids, corners with eight equivalent V(1)V2As5 square pyramids, edges with two equivalent V(3)As6 octahedra, edges with two equivalent V(1)V2As5 square pyramids, edges with four equivalent V(2)As5 square pyramids, and faces with two equivalent V(1)V2As5 square pyramids. In the fourth V site, V(4) is bonded in a distorted square co-planar geometry to four equivalent As(1) atoms. In the fifth V site, V(5) is bonded to eight equivalent V(1) and four equivalent As(2) atoms to form distorted VV8As4 cuboctahedra that share corners with eight equivalent V(3)As6 octahedra, corners with four equivalent V(2)As5 square pyramids, edges with eight equivalent V(1)V2As5 square pyramids, and faces with two equivalent V(5)V8As4 cuboctahedra. The corner-sharing octahedral tilt angles are 43°. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 7-coordinate geometry to one V(1), one V(3), one V(4), and four equivalent V(2) atoms. In the second As site, As(2) is bonded in a 8-coordinate geometry to one V(2), one V(5), two equivalent V(3), and four equivalent V(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_V3As2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.318
_cell_length_b   9.546
_cell_length_c   9.547
_cell_angle_alpha   89.996
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   302.395
_cell_formula_units_Z   4
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
  V  V0  1  0.500  0.126  0.186  1.0
  V  V1  1  0.500  0.814  0.126  1.0
  V  V2  1  0.500  0.186  0.874  1.0
  V  V3  1  0.500  0.874  0.814  1.0
  V  V4  1  0.000  0.398  0.289  1.0
  V  V5  1  0.000  0.711  0.398  1.0
  V  V6  1  0.000  0.289  0.602  1.0
  V  V7  1  0.000  0.602  0.711  1.0
  V  V8  1  0.500  0.000  0.500  1.0
  V  V9  1  0.500  0.500  0.000  1.0
  V  V10  1  0.500  0.500  0.500  1.0
  V  V11  1  0.000  0.000  0.000  1.0
  As  As12  1  0.500  0.245  0.412  1.0
  As  As13  1  0.500  0.588  0.245  1.0
  As  As14  1  0.500  0.412  0.755  1.0
  As  As15  1  0.500  0.755  0.588  1.0
  As  As16  1  0.000  0.283  0.048  1.0
  As  As17  1  0.000  0.952  0.283  1.0
  As  As18  1  0.000  0.048  0.717  1.0
  As  As19  1  0.000  0.717  0.952  1.0
[/CIF]
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