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lywbq2008

铜虫 (小有名气)

[求助] 投稿后审稿人要求计算No. of parameters,如何求解?谢谢!

审稿人的意见:
(主要是针对 No. of parameters的数目,我不知道如何依据晶体的独立单元中所含的原子来求解,另外还有那些限制可以增加No. of parameters的数目,或者提供解决问题的途径,在哪儿可以找到相识的答案,谢谢!

I had problems counting the variables.  In the HT structure there are 9+3 non-H atoms on general positions

and 2 (CL and O6) on special positions for (9+3)*9 + 2*5 = 118 variables.  The total shown in the CIF is 121,

of which one is the scale factor.  What are the other two?
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lywbq2008

铜虫 (小有名气)

另外,审稿人还有其余问题,菜鸟一只,不知如何回答,感谢各位提出意见,谢谢!
The transmission factors differ substantially for the two structures (0.85-1.00 and 0.65-1.00)) even though the dimensions for the crystal(s) are the same and the linear absorption coefficients are nearly the same.

Torsion angles are given with VERY large uncertainties [eg, 5.791(172) at line 81].  Uncertainties are usually limited to values no larger than 19.

It is said that the phase transition is reversible.  It is implied  that the crystal remains single through the transition but that is never actually stated and no supporting evidence is given.  The changes in the cell constants are large enough through the transition (ca 2% in the dimensions after correcting for the doubling of a and b;  1.9 deg in beta) that more information should be given.

Re "The refined hydrogen proton":  the H atom was not refined, the term "hydrogen proton" is redundant, and X-rays are not scattered by real protons, which have no electron density.
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