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You entered the OD groupoid family symbol: op c-1-1(-1) { n_(1,2) - (-)}

The OD groupoid family parsed fine.

General OD Family Symbol

opc11 (1)  
 2-1+r--
 c2
 2r
 n1,2

Reduced general OD Family Symbol

opc11 (1)  
 2-1+r--
 c2
 2r
 n1,2

General Data

OD family of layers

Kinds of layers:N=1
Category:I (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/2,1)
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: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):4
Order (modulo global lattice):4
Order (modulo common lattice):4
Floating origin:0,0,0

Symmetry operations:

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

Special positions:

x,y,z
1/4,1/4,0
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. s=l, l∈ℤ (user)
    Codes: user-1, user-2
    1. l=0
    2. l=1
  3. 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