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zcf200300

木虫 (小有名气)

[求助] 求助B类错误

请教各位大侠,cif检查时出现此B类错误该怎样解决,因文章发表在即,望大侠们不吝赐教。
PLAT601_ALERT_2_B Structure Contains Solvent Accessible VOIDS of .   168 A**3



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.
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七叶禾
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zcf200300

木虫 (小有名气)

送鲜花一朵
引用回帖:
3楼: Originally posted by chenk at 2012-09-24 16:46:46
估计你的这个配合物中有空
如果是 不用去理会

我的结构中没有孔啊
七叶禾
5楼2012-09-24 20:22:22
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cluster8676

至尊木虫 (著名写手)

【答案】应助回帖


感谢参与,应助指数 +1
linhua0402313: 金币+1, 恩,感谢回帖交流,欢迎常来晶体板块 2012-09-24 12:05:37
你的结构里面应该有客体分子,溶剂分子,你自己用的什么溶剂应该很清楚吧? 要么就把溶剂找出来,要么就做squeeze。

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学无止境
2楼2012-09-24 11:48:11
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chenk

木虫 (小有名气)

【答案】应助回帖


感谢参与,应助指数 +1
linhua0402313: 金币+1, 感谢参与回帖交流 2012-09-24 21:54:23
估计你的这个配合物中有空
如果是 不用去理会

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3楼2012-09-24 16:46:46
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zcf200300

木虫 (小有名气)

送鲜花一朵
引用回帖:
2楼: Originally posted by cluster8676 at 2012-09-24 11:48:11
你的结构里面应该有客体分子,溶剂分子,你自己用的什么溶剂应该很清楚吧? 要么就把溶剂找出来,要么就做squeeze。

您好,我的结构里面在解析时看不到客体分子啊,为什么溶剂找不出来就要做squeeze呢?本人菜鸟,烦请告知,谢谢
七叶禾
4楼2012-09-24 20:21:21
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