Demo

You entered the OD groupoid family symbol: { 2_(-r) -1 (-1)} [-,0] cm1(1) { 2_(r') -1 (-1)} [-,0]

The OD groupoid family parsed fine.

General OD Family Symbol

cm1 (1)  
2-r''11
21-r''
  [0]   
2r'''11
21+r'''
  [0]   

Reduced general OD Family Symbol

cm1 (1)  
2-r''11
21-r''
  [0]   
2r'''11
21+r'''
  [0]   

General Data

OD family of layers

Kinds of layers:N=1
Category:III (single)
Pointgroup:2/m11 (C2h)
Crystal system:monoclinic
Layer system:rectangular
Common lattice:same
Common lattice size (rel. to global):1
Layer planes:(001)
c0(0,s+s',1)
Global lattice restriction:ab=0
User supplied lattice restriction:none
Lattice restriction derived from layers:ab=0

Layer Data

Layer 0:

Type:Layer group
Symbol:cm1(1)
Crystal system:monoclinic
Layer system:rectangular
Polarity:polar
Lattice restriction (instrinsic):ab=0
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):4
Order (modulo global lattice):4
Order (modulo common lattice):4
Floating origin:0,y,z

Symmetry operations:

x,y,z1
-x,y,zm
x+1/2,y+1/2,ztC
-x+1/2,y+1/2,zb

Special positions:

x,y,z
0,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. s=0 (reduced)
    Codes: reduced
    1. No subparameters.
  3. r''=r+l, s=0, l∈ℤ (user)
    Codes: user-1, user-2
    1. l=0
    2. l=1
  4. r''=n, n∈ℤ (special)
    Codes: nfz1-2-2 (m [100] 0,y,z)
    1. n=0
    2. n=1

Special parameters for σ-POs (right)

  1. (general, reduced)
    Codes: general, reduced
    1. No subparameters.
  2. r'''=r'+l, s'=0, l∈ℤ (user)
    Codes: user-1, user-2
    1. l=0
    2. l=1
  3. r'''=n, n∈ℤ (special)
    Codes: nfz1-2-2 (m [100] 0,y,z)
    1. n=0
    2. n=1