Pcc2
From NWChem
group number = 27 group name = Pcc2 crystal system = Orthorhombic number of symmetry operators = 4 +x,+y,+z -x,-y,+z +x,-y,+z+1/2 -x,+y,+z+1/2 = operator 1 = 1.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 1.0 0.0 = operator 2 = -1.0 0.0 0.0 0.0 0.0 -1.0 0.0 0.0 0.0 0.0 1.0 0.0 = operator 3 = 1.0 0.0 0.0 0.0 0.0 -1.0 0.0 0.0 0.0 0.0 1.0 0.5 = operator 4 = -1.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 1.0 0.5