Pbam No. 55 P21/b21/a2/m D2h9


Axes Coordinates Wyckoff positions
2a 2b 2c 2d 4e 4f 4g 4h 8i
I Maximal translationengleiche subgroups
[2] Pba2 (32) 2a 2a 2b 2b 2 × 2a 2 × 2b 4c 4c 2 × 4c
[2] Pb21m (26) x + (1/4), y, z 2a 2b 2a 2b 4c 4c 2 × 2a 2 × 2b 2 × 4c
[conventional setting]Pmc21 c, a, b z, x + (1/4), y
[2] P21am (26) x, y + (1/4), z 2a 2b 2a 2b 4c 4c 2 × 2a 2 × 2b 2 × 4c
[conventional setting]Pmc21 c, b, -a z, y + (1/4), -x
[2] P21212 (18) 2a 2a 2b 2b 2 × 2a 2 × 2b 4c 4c 2 × 4c
[2] P21/b11 (14) 2a 2b 2c 2d 4e 4e 4e 4e 2 × 4e
[conventional setting]P121/c1 c, a, b z, x, y
[2] P121/a1 (14) 2a 2d 2c 2b 4e 4e 4e 4e 2 × 4e
[2] P112/m (10) 1a; 1g 1b; 1h 1c; 1d 1e; 1f 2i; 2l 2j; 2k 2 × 2m 2 × 2n 2 × 4o
II Maximal klassengleiche subgroups
   Enlarged unit cell, non-isomorphic
[2] Pnam (62) a, b, 2c x, y, (1/2)z; +(0, 0, (1/2)) 4a 4c 4b 4c 8d 8d 8d 2 × 4c 2 × 8d
[conventional setting]Pnma a, 2c, -b x, (1/2)z, -y; +(0, (1/2), 0)
[2] Pnam (62) a, b, 2c x, y, (1/2)z + (1/4); +(0, 0, (1/2)) 4c 4a 4c 4b 8d 8d 2 × 4c 8d 2 × 8d
[conventional setting]Pnma a, 2c, -b x, (1/2)z + (1/4), -y; +(0, (1/2), 0)
[2] Pbnm (62) a, b, 2c x, y, (1/2)z; +(0, 0, (1/2)) 4a 4c 4b 4c 8d 8d 8d 2 × 4c 2 × 8d
[conventional setting]Pnma b, 2c, a y, (1/2)z, x; +(0, (1/2), 0)
[2] Pbnm (62) a, b, 2c x, y, (1/2)z + (1/4); +(0, 0, (1/2)) 4c 4a 4c 4b 8d 8d 2 × 4c 8d 2 × 8d
[conventional setting]Pnma b, 2c, a y, (1/2)z + (1/4), x; +(0, (1/2), 0)
[2] Pnnm (58) a, b, 2c x, y, (1/2)z; +(0, 0, (1/2)) 2a; 2b 4e 2c; 2d 4f 2 × 4e 2 × 4f 2 × 4g 8h 2 × 8h
[2] Pnnm (58) a, b, 2c x, y, (1/2)z + (1/4); +(0, 0, (1/2)) 4e 2a; 2b 4f 2c; 2d 2 × 4e 2 × 4f 8h 2 × 4g 2 × 8h
   Enlarged unit cell, isomorphic
[3] Pbam 3a, b, c (1/3)x, y, z; ±((1/3), 0, 0) 2a; 4g 2b; 4h 2c; 4g 2d; 4h 4e; 8i 4f; 8i 3 × 4g 3 × 4h 3 × 8i
[p] Pbam pa, b, c (1/p)x, y, z; +((u/p), 0, 0) 2a; 2b; 2c; 2d; 4e; 4f; p × 4g p × 4h p × 8i
p = prime > 2; u = 1, . . ., p - 1 ((p - 1)/2) × 4g ((p - 1)/2) × 4h ((p - 1)/2) × 4g ((p - 1)/2) × 4h ((p - 1)/2) × 8i ((p - 1)/2) × 8i
[3] Pbam a, 3b, c x, (1/3)y, z; ±(0, (1/3), 0) 2a; 4g 2b; 4h 2c; 4g 2d; 4h 4e; 8i 4f; 8i 3 × 4g 3 × 4h 3 × 8i
[p] Pbam a, pb, c x, (1/p)y, z; +(0, (u/p), 0) 2a; 2b; 2c; 2d; 4e; 4f; p × 4g p × 4h p × 8i
p = prime > 2; u = 1, . . ., p - 1 ((p - 1)/2) × 4g ((p - 1)/2) × 4h ((p - 1)/2) × 4g ((p - 1)/2) × 4h ((p - 1)/2) × 8i ((p - 1)/2) × 8i
[2] Pbam a, b, 2c x, y, (1/2)z; +(0, 0, (1/2)) 2a; 2b 4e 2c; 2d 4f 2 × 4e 2 × 4f 4g; 4h 8i 2 × 8i
[2] Pbam a, b, 2c x, y, (1/2)z + (1/4); +(0, 0, (1/2)) 4e 2a; 2b 4f 2c; 2d 2 × 4e 2 × 4f 8i 4g; 4h 2 × 8i
[3] Pbam a, b, 3c x, y, (1/3)z; ±(0, 0, (1/3)) 2a; 4e 2b; 4e 2c; 4f 2d; 4f 3 × 4e 3 × 4f 4g; 8i 4h; 8i 3 × 8i
[p] Pbam a, b, pc x, y, (1/p)z; +(0, 0, (u/p)) 2a; 2b; 2c; 2d; p × 4e p × 4f 4g; 4h; p × 8i
p = prime > 2; u = 1, . . ., p - 1 ((p - 1)/2) × 4e ((p - 1)/2) × 4e ((p - 1)/2) × 4f ((p - 1)/2) × 4f ((p - 1)/2) × 8i ((p - 1)/2) × 8i


Nonconventional settings
        interchange letters and sequences in Hermann-Mauguin symbols, axes and coordinates:
Pmcb a→ b → c → a a→ b → c → a x→ y → z → x
Pcma a← b ← c ← a a← b ← c ← a x← y ← z ← x









































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