The symmetry operations built into the SnB program assume that the standard space groups listed in the International Tables are used. For monoclinic structures, the b-axis must be unique. Structures in rhombohedral space groups must be referred to hexagonal axes.

SnB Dimensions

• Elements : 16
• Cycles : 2,000
• Peaks/atoms : 10,000
• Reflections (after all cutoffs) : 400,000
• Reflection hemisphere : 1,000,000
• Triplet invariants : 500,000
• Fourier grid points (full cell) : 10,000,000

DREAR Dimensions

• SORTAV : 2,000,000 reflections
• BAYES : 2,000,000 reflections
• LEVY : 1,000,000 reflections
• EVAL : 1,000,000 reflections
• LOCSCL : 500,000 reflection pairs
• DIFFE : 500,000 reflection pairs