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PLAT303_ALERT_2_B Full Occupancy H-Atom  H8A    with # Connections    3.00      
PLAT420_ALERT_2_B D-H Without Acceptor       O8     -   H8C    ...          ?

PLAT303 Type_2 Test for more than 1 connection to Hydrogen Atoms
--------------------------------------------------------------------------------
Hydrogen atoms are generally connected to only one other atom. A hydrogen
atom between two oxygen atoms is a special case. Investigate whether this
hydrogen atom is better described with a disorder model with two partially
occupied sites. A difference map might show a double-well density.        

PLAT420 Type_2 Test for D-H without acceptor
--------------------------------------------------------------------------------
Potential hydrogen bond donors are checked for the presence of suitable
acceptors using commonly used (Jeffrey) H-bond criteria. As a general rule
there should be an acceptor for each donor. Exceptions are very rare for O-H
and more common for -NH and -NH2. A common error is an -OH on a calculated
position pointing in the wrong direction.

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[ Last edited by sxmx88 on 2012-5-4 at 20:31 ]
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xiaoshan1988

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3Â¥: Originally posted by sdujjt at 2012-05-05 10:33:30:
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sxmx88

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5Â¥: Originally posted by r2rr2r at 2012-05-05 11:36:45:
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sxmx88

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4Â¥: Originally posted by xiaoshan1988 at 2012-05-05 11:01:37:
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sxmx88

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ÒýÓûØÌû:
4Â¥: Originally posted by xiaoshan1988 at 2012-05-05 11:01:37:
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sxmx88

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ÒýÓûØÌû:
5Â¥: Originally posted by r2rr2r at 2012-05-05 11:36:45:
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