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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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gzesxx

木虫 (小有名气)

[交流] 求助编辑提问

编辑提问如下;
1. publ_section_exptl_refinement
;
The H atoms were placed in calculated positions with C---H = 0.93 or 0.96 \%A,
and refined in riding mode with U~iso~(H) = 1.2--1.5 U~eq~(C).
;
It is not satisfactory.

Please follow the example and use what is suitable for the title structure.
Here is an example from the different structure determination:
_publ_section_exptl_refinement
;
In both structures all the hydrogens were discernible in the
difference Fourier maps. However, they were constrained by
riding model approximation. C-H~methyl~=0.96 \%A; C-H~aryl~=0.93 \%A;
U~iso~H~methyl~=1.5U~eq~(C~methyl~); U~iso~H~aryl~=1.2U~eq~(C~aryl~).
In case of the NH~2~ group in either compound, the positional
parameters of the hydrogens were constrained by the SHELXL-97
command to the idealized tetrahedral geometry by the command AFIX 3
(Sheldrick, 2008). The isotropic displacement parameters of the
NH~2~ hydrogens were freely refined.

请问publ_section_exptl_refinement  这段该怎么填。

Please add the sentence "In the absence of significant anomalous scattering effects 626 Friedel pairs have been merged."
这段话是不是也要加在上面那段话里。


Also take into consideration
_atom_sites_solution_hydrogens    difmap

2.What was the habitus and the average size of the obtained crystals?
我晶体的平均尺寸为0.15mm左右,该具体怎么表达

谢谢。
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gzesxx

木虫 (小有名气)

C---H...pi 作用怎样列表到CIF文件中

ACTA E 的编辑要求 C---H...pi 作用要列表,我不知道怎样将计算结果写入cif。
请问怎样将计算结果写入cif。
谢谢。
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