Demo

You entered the OD groupoid family symbol: tp { - - (n_(-r,-s))} p11(1) { - - (-4^-)} [r',s']

The OD groupoid family parsed fine.

General OD Family Symbol

tpp11 (1)  
 {--(n-r'',-s'')}
 {--(4-)}
  [r''',s''']   

Reduced general OD Family Symbol

tpp11 (1)  
 {--(n-r'',-s'')}
 {--(4-)}
  [0,0]   

General Data

OD family of layers

Kinds of layers:N=1
Category:III (single)
Pointgroup:4/m (C4h)
Crystal system:tetragonal
Layer system:square
Common lattice:same
Common lattice size (rel. to global):1
Layer planes:(001)
c0(0,0,1)
Global lattice restriction:ab=0, |b|=|a|
User supplied lattice restriction:ab=0, |b|=|a|
Lattice restriction derived from layers:none

Layer Data

Layer 0:

Type:Layer group
Symbol:p11(1)
Crystal system:triclinic
Layer system:oblique
Polarity:polar
Lattice restriction (instrinsic):none
Lattice restriction (extrinsic):ab=0, |b|=|a|
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):1
Order (modulo global lattice):1
Order (modulo common lattice):1
Floating origin:x,y,z

Symmetry operations:

x,y,z1

Special positions:

x,y,z

Centring vectors:

none

Special parameters

Special parameters for σ-POs (left)

  1. (general, reduced)
    Codes: general, reduced
    1. No subparameters.
  2. r''=r+2l, s''=s+2l', l,l'∈ℤ (user)
    Codes: user-1
    1. l=0, l'=0
  3. r''=m, s''=n, m,n∈ℤ (special)
    Codes: nfz2-1-1 (nr'',s'' [001] x,y,-1/2)
    1. m=0, n=0
    2. m=1, n=0
    3. m=0, n=1
    4. m=1, n=1

Special parameters for σ-POs (right)

  1. (general)
    Codes: general
    1. No subparameters.
  2. r'''=0, s'''=0 (reduced)
    Codes: reduced
    1. No subparameters.
  3. r'''=r', s'''=s' (user)
    Codes: user-1
    1. No subparameters.