-    PARADAMITE     -    Zn2AsO4OH

 

Crystal Structure 


Because of the translational symmetry all the calculations are performed in the primitive unit cell and not in the conventional unit cell. The following information regarding the structure is given with respect to this primitive unit cell, which sometimes can take an unintuitive shape.

Symmetry (experimental): 

Space group:  P-1 
Lattice parameters (Å):  5.6380  5.8270  6.6920 
Angles (°):  103.25  104.37  87.72 

Symmetry (theoretical): 

Space group:  P-1 
Lattice parameters (Å):  5.5242  5.7545  6.6976 
Angles (°):  103.39  104.27  88.18 

Cell contents: 

Number of atoms:  18 
Number of atom types: 
Chemical composition: 

Atomic positions (theoretical):

Zn:  0.3932  0.2477  0.4993 
As:  0.0229  0.7376  0.1852 
Zn:  0.8275  0.2487  0.2750 
As:  0.7496  0.9629  0.1415 
H:  0.9534  0.3870  0.1252 
Zn:  0.5672  0.3893  0.3276 
Zn:  0.9584  0.7470  0.4913 
Zn:  0.3565  0.8959  0.2988 
Zn:  0.4454  0.9100  0.1898 
Zn:  0.6068  0.7523  0.5007 
Zn:  0.9771  0.2624  0.8148 
Zn:  0.1725  0.7513  0.7250 
Zn:  0.2504  0.0371  0.8585 
Zn:  0.0466  0.6130  0.8748 
Zn:  0.4328  0.6107  0.6724 
Zn:  0.0416  0.2530  0.5087 
Zn:  0.6435  0.1041  0.7012 
Zn:  0.5546  0.0900  0.8102 
Atom type 

We have listed here the reduced coordinates of all the atoms in the primitive unit cell.
It is enough to know only the position of the atoms from the assymetrical unit cell and then use the symmetry to build the whole crystal structure.

Visualization of the crystal structure: 

Size:

  
Nx:  Ny:  Nz:    
You can define the size of the supercell to be displayed in the jmol panel as integer translations along the three crys­tallo­gra­phic axis.
Please note that the structure is represented using the pri­mi­tive cell, and not the conventional one.