Demo

You entered the OD groupoid family symbol: op { - 2_(-s) (-)} [r,-] c11(1) { 2_(r') - (-)} [-,s']

The OD groupoid family parsed fine.

General OD Family Symbol

opc11 (1)  
 -2-s''-
 21-s''
  [r'']    
 2r'''--
 21+r'''
   [s''']   

Reduced general OD Family Symbol

opc11 (1)  
 -2-s''-
 21-s''
  [0]    
 2r'''--
 21+r'''
   [0]   

General Data

OD family of layers

Kinds of layers:N=1
Category:III (single)
Pointgroup:222 (D2)
Crystal system:orthorhombic
Layer system:rectangular
Common lattice:same
Common lattice size (rel. to global):1
Layer planes:(001)
c0(0,0,1)
Global lattice restriction:ab=0
User supplied lattice restriction:ab=0
Lattice restriction derived from layers:none

Layer Data

Layer 0:

Type:Layer group
Symbol:c11(1)
Crystal system:triclinic
Layer system:oblique
Polarity:polar
Lattice restriction (instrinsic):none
Lattice restriction (extrinsic):ab=0
Lattice (rel. to global):same
Lattice (rel. to common):same
Lattice size (rel. to global):1
Lattice size (rel. to common):1
Order (modulo lattice):2
Order (modulo global lattice):2
Order (modulo common lattice):2
Floating origin:x,y,z

Symmetry operations:

x,y,z1
x+1/2,y+1/2,ztC

Special positions:

x,y,z

Centring vectors:

(1/2,1/2,0)

Special parameters

Special parameters for σ-POs (left)

  1. (general)
    Codes: general
    1. No subparameters.
  2. r''=0 (reduced)
    Codes: reduced
    1. No subparameters.
  3. r''=r, s''=s+l, l∈ℤ (user)
    Codes: user-1, user-2
    1. l=0
    2. l=1
  4. s''=n, n∈ℤ (special)
    Codes: nfz2-1-1 (2s'' [010] r''/2,y,-1/2)
    1. n=0
    2. n=1

Special parameters for σ-POs (right)

  1. (general)
    Codes: general
    1. No subparameters.
  2. s'''=0 (reduced)
    Codes: reduced
    1. No subparameters.
  3. r'''=r'+l, s'''=s', l∈ℤ (user)
    Codes: user-1, user-2
    1. l=0
    2. l=1
  4. r'''=n, n∈ℤ (special)
    Codes: nfz2-1-1 (2r''' [100] x,s'''/2,1/2)
    1. n=0
    2. n=1