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北京石油化工学院2026年研究生招生接收调剂公告
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ayzhjz

银虫 (正式写手)

[交流] 请教编辑提出的问题.

投一个ACTAE,编辑提出如下问题:
Please check that the estimate of the number of Friedel pairs is correct. If it is not, please give the correct count in the _publ_section_exptl_refinement section of the submitted CIF." If the structure is non-centrosymmetric with atoms HEAVIER than silicon the following two line items must be present in the CIF:
_refine_ls_abs_structure_details   
_refine_ls_abs_structure_Flack
We have estimated the number of Friedel related reflections in your data set from a comparison of your value of _reflns_number_total with the theoretical number calculated for the symmetry-unique portion of reciprocal space out to your stated theta(max). We ask you to check our estimate and correct as necessary.
请问编辑是想让我们作什么?谢谢了!
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xi2004

至尊木虫 (职业作家)


warlen(金币+1,VIP+0):3Q~ 3-27 09:41
先问你两个问题,
结构中有重于Si的原子吗?
结构是非心的吗?
xi2004-emuch@163.com
2楼2009-03-26 23:55:58
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ayzhjz

银虫 (正式写手)

回复XI2004

结构中有重原子NI,是一个非心结构.
3楼2009-03-27 07:19:54
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xiaochong98

木虫 (职业作家)


warlen(金币+1,VIP+0):3Q~ 3-27 09:41
查一下你的总衍射点数、独立衍射点数与可观察点数,看看写的是否有问题
北京人
4楼2009-03-27 07:55:19
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paopaomeng

铁杆木虫 (著名写手)

好像是手性空间群的话都会出现一个G级错误,那么编辑就会提着个问题,同样也想知道该怎么回答
经历了“删除门”,有点晕!
5楼2009-03-27 18:05:22
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xi2004

至尊木虫 (职业作家)

我以前说过该怎么做。
你们找找吧。
其实你们可以自己用checkcif检查一下, 里面提示你该怎么做。
xi2004-emuch@163.com
6楼2009-03-27 18:30:34
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paopaomeng

铁杆木虫 (著名写手)


洛阳学子(金币+1,VIP+0):积极回复 4-8 21:14
IF Z > Si .and. NFDRAT > 0.5 issue a General ALERT
   "Please check that the estimate of the number of Friedel pairs is correct. If it is not, please give the correct count in the _publ_section_exptl_refinement section of the submitted CIF."
If the structure is non-centrosymmetric with atoms HEAVIER than silicon the following two line items must be present in the CIF:
  _refine_ls_abs_structure_details
  _refine_ls_abs_structure_Flack

We have estimated the number of Friedel related reflections in your data set from a comparison of your value of _reflns_number_total with the theoretical number calculated for the symmetry-unique portion of reciprocal space out to your stated theta(max). We ask you to check our estimate and correct as necessary. Then add the number of Friedel pairs used in the refinement to the _refine_ls_abs_structure_details line so that it looks like:

  _refine_ls_abs_structure_details   'Flack (1983), XXXX Friedel pairs'

and replace the XXXX with the actual number of Friedel pairs used in the refinement. [An easy way to determine the number of Friedel pairs is to look at the difference between the number of unique reflections used in SHELXL when a MERG2 and MERG 3 instruction is used (MERG 3 forces Friedel pairs to be merged before use).]
经历了“删除门”,有点晕!
7楼2009-03-27 19:41:12
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ayzhjz

银虫 (正式写手)

谢谢回复!

谢谢各位!
8楼2009-04-08 21:12:02
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