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Space group determination: Difference between revisions
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→Space groups to consider based on CORRECT suggestion
(→Space groups to consider based on CORRECT suggestion: fix 20/21 thanks to Clemens V) |
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| 3 || 4 || screw axis extinctions let you decide | | 3 || 4 || screw axis extinctions let you decide | ||
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| 5 || - || | | 5 || - || [[pointless]] discusses why I2 should not be used. | ||
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| 16 || 17, 18, 19 || screw axis extinctions let you decide | | 16 || 17, 18, 19 || screw axis extinctions let you decide. [[pointless]] 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. | ||
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| 21 || 20 || screw axis extinctions let you decide | | 21 || 20 || screw axis extinctions let you decide | ||
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| 22 || - || | | 22 || - || | ||
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| 23 || 24 || screw axis extinctions do '''not''' let you decide | | 23 || 24 || screw axis extinctions do '''not''' let you decide because the I centering results in h+k+l=2n and the screw axis 00l=2n is just a special case of that. | ||
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| 75 || 76, 77, 78 || screw axis extinctions let you decide, except between 76/78 enantiomorphs | | 75 || 76, 77, 78 || screw axis extinctions let you decide, except between 76/78 enantiomorphs | ||
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| 196 || - || | | 196 || - || | ||
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| 197 || 199 || screw axis extinctions do '''not''' let you decide | | 197 || 199 || screw axis extinctions do '''not''' let you decide because the I centering results in h+k+l=2n and the screw axis 00l=2n is just a special case of that. | ||
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| 207 || 208, 212, 213 || screw axis extinctions let you decide, except between 212/213 enantiomorphs | | 207 || 208, 212, 213 || screw axis extinctions let you decide, except between 212/213 enantiomorphs | ||
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If you find an error in the table please send an email to kay dot diederichs at uni-konstanz.de ! | |||
== Space group selected by user == | == Space group selected by user == | ||