Demo

You entered the OD groupoid family symbol: op p11(a) { 2_(1+r) n_(2,r) (-)} [-,s]

The OD groupoid family parsed fine.

General OD Family Symbol

opp11 (a)  
 {21+r'n2,r'(-)}
   [s']   

Reduced general OD Family Symbol

opp11 (a)  
 {21+r'n2,r'(-)}
   [0]   

General Data

OD family of layers

Kinds of layers:N=1
Category:I (single)
Pointgroup:2mm (C2v)
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:p11(a)
Crystal system:monoclinic
Layer system:oblique
Polarity:non-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,0

Symmetry operations:

x,y,z1
x+1/2,y,-za

Special positions:

x,y,z

Centring vectors:

none

Special parameters

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+2l', s'=s, l'∈ℤ (user)
    Codes: user-1
    1. l'=0
  4. r'=m, m∈ℤ (special)
    Codes: nfz2-1-1 (21+r' [100] x,s'/2,1/2)
    1. m=0
    2. m=1