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yangdeliang

银虫 (小有名气)

[求助] 求助Acta E的一个C类错误

Regarding voids in the structure, larger than  40 Ang**3, CheckCif explains:

--------------------------------------------------------------------------------
PLAT601 Type_2 Test for (Unreported) solvent accessible voids
--------------------------------------------------------------------------------

Crystal structures in general do not contain large solvent accessible voids
in the lattice. Most structures lose their long-range ordering when solvent
molecules leave the crystal. Only when the remaining network is strongly
bonded (e.g. zeolites and some hydrogen bonded networks) the crystal
structure may survive.
Residual voids in a structure may indicate the omission of (disordered)
density from the model. Disordered density may go undetected when smeared
since peak search programs are not designed to locate maxima on density
ridges. The presence or absence of residual density in the void may be
verified on a printed/plotted difference Fourier map or with PLATON/SQUEEZE.
Voids of 40 Ang**3 may accommodate H2O. Small molecules such as
Tetrahydrofuran have typical volumes in the 100 to 200 Ang**3 range.
This test reports the volume of the largest solvent accessible void in the
structure.
A paper reporting a crystal structure with a significant solvent accessible
void should at the least discuss the issue.

A CheckCif test in your structure detects

"PLAT601_ALERT_2_C Structure Contains Solvent Accessible VOIDS of  78 A**3 "

Please, discuss/explain.
这是我投的Acta E的一个C类错误,上面是审稿人的问题,哪位高手能帮我回答一下
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454106649

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【答案】应助回帖

yangdeliang(金币+2): 2011-08-02 13:01:46
有大于40的孔隙!让你分析一下原因~
确定没有原子了?有没有无序呢?
454106649@qq.com
2楼2011-07-26 12:31:39
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yangdeliang

银虫 (小有名气)

引用回帖:
2楼: Originally posted by 454106649 at 2011-07-26 12:31:39:
有大于40的孔隙!让你分析一下原因~
确定没有原子了?有没有无序呢?

没有无序的原子!麻烦问你一下应该怎么 解释?
3楼2011-08-02 13:00:55
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