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Space group determination

300 bytes added, 14:26, 23 February 2015
Space groups to consider based on CORRECT suggestion: add Bravais type and Laue group
| mP || 2m || 3 || 4 || screw axis extinctions let you decide
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| mC || 2m || 5 || - || The [[pointless]] article discusses why I2 (mI) should not be used.
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| oP || mmm || 16 || 17, 18, 19 || screw axis extinctions let you decide. The [[pointless]] article discusses why CCP4's 1017 (P2<sub>1</sub>22), 2017 (P22<sub>1</sub>2), 2018 (P2<sub>1</sub>22<sub>1</sub>) , 3018 (P22<sub>1</sub>2<sub>1</sub>) are not needed and should not be used.
|-
| oC || mmm || 21 || 20 || screw axis extinctions let you decide
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| oF || mmm || 22 || - ||
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| oI || mmm || 23 || 24 || screw axis extinctions do '''not''' let you decide because the I centering results in h+k+l=2n and the screw axis extinction 00l=2n is just a special case of that.
|-
| tP || 4/m || 75 || 76, 77, 78 || screw axis extinctions let you decide, except between 76/78 enantiomorphs
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| tP || 4/mmm || 89 || 90, 91, 92, 93, 94, 95, 96 || screw axis extinctions let you decide, except between 91/95 and 92/96 enantiomorphs
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| tI || 4/m || 79 || 80 || screw axis extinctions let you decide
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| tI || 4/mmm || 97 || 98 || screw axis extinctions let you decide
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| hP || -3 || 143 || 144, 145 || screw axis extinctions let you decide, except between 144/145 enantiomorphs
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| hR || -3 || 146 || - ||
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| hP || -3/m || 149 || 151, 153 || screw axis extinctions let you decide, except between 151/153 enantiomorphs
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| hP || -3/m || 150 || 152, 154 || screw axis extinctions let you decide, except between 152/154 enantiomorphs
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| hR || -3/m || 155 || - ||
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| hP || 6/m || 168 || 169, 170, 171, 172, 173 || screw axis extinctions let you decide, except between 169/170 and 171/172 enantiomorphs
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| hP || 6/mmm || 177 || 178, 179, 180, 181, 182 || screw axis extinctions let you decide, except between 178/179 and 180/181 enantiomorphs
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| cP || m-3 || 195 || 198 || screw axis extinctions let you decide
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| cF || m-3 || 196 || - ||
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| cI || m-3 || 197 || 199 || screw axis extinctions do '''not''' let you decide because the I centering results in h+k+l=2n and the screw axis extinction 00l=2n is just a special case of that.
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| cP || m-3m || 207 || 208, 212, 213 || screw axis extinctions let you decide, except between 212/213 enantiomorphs
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| cF || m-3m || 209 || 210 || screw axis extinctions let you decide
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| cI || m-3m || 211 || 214 || screw axis extinctions let you decide
|-
|}
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