Demo

You entered the OD groupoid family symbol: op c11(2/e) { n_(1+s,2) n_(2,r) (-)}

The OD groupoid family parsed fine.

General OD Family Symbol

opc11 (2/e)  
 2-1+r'2s'-
 ns',2n2,r'
 2r'21+s'
 n1+s',2n2,1+r'

Reduced general OD Family Symbol

opc11 (2/e)  
 2-1+r'2s'-
 ns',2n2,r'
 2r'21+s'
 n1+s',2n2,1+r'

General Data

OD family of layers

Kinds of layers:N=1
Category:I (single)
Pointgroup:mmm (D2h)
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(2/e)
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):8
Order (modulo global lattice):8
Order (modulo common lattice):8
Floating origin:0,0,0

Symmetry operations:

x,y,z1
-x,-y+1/2,z2
x+1/2,y,-za
x+1/2,y+1/2,ztC
-x+1/2,-y+1/2,-z1
-x+1/2,-y,z2
x,y+1/2,-zb
-x,-y,-z1

Special positions:

x,y,z
0,1/4,z
1/4,1/4,0
1/4,0,z
0,0,0

Centring vectors:

(1/2,1/2,0)

Special parameters

Special parameters for σ-POs (right)

  1. (general, reduced)
    Codes: general, reduced
    1. No subparameters.
  2. r'=r+l', s'=s+l, l,l'∈ℤ (user)
    Codes: user-1, user-2, user-3, user-4
    1. l=0, l'=0
    2. l=0, l'=1
  3. r'=m/2+n/2, s'=m/2-n/2, m,n∈ℤ (special)
    Codes: nfz1-2-2 (2 [001] 0,1/4,z)
    1. m=0, n=0
    2. m=1, n=0
    3. m=0, n=1
    4. m=1, n=1
  4. r'=n, n∈ℤ (special)
    Codes: nfz2-1-1 (2-1+r' [100] x,1/4+s'/4,1/2)
    1. n=0
    2. n=1
  5. s'=n, n∈ℤ (special)
    Codes: nfz2-3-1 (2s' [010] -1/4+r'/4,y,1/2)
    1. n=0
    2. n=1