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hesperus329

金虫 (正式写手)

[求助] 如何解决check cif报告里的错误?有A,B,C类错误?怎么办?

文章写好都投出去了,主编说还缺少check cif报告,结果打出来后出现 A,B,C 三类错误,本人是菜鸟,对单晶结构不太懂,是不是培养的单晶晶型不好?不知如何处理,望高手指点!

Datablock: shelxl
--------------------------------------------------------------------------------
Bond precision: C-C = 0.0046 A Wavelength=1.54187
Cell: a=8.8532(10) b=13.720(2) c=17.688(2)
alpha=90 beta=90 gamma=90
Temperature:  293 K   
Calculated Reported
Volume 2148.5(5)  2148.5(5)
Space group P 21 21 21  P 21 21 21  
Hall group P 2ac 2ab  ?  
Moiety formula C24 H25 N O5  C24 H25 N O5  
Sum formula C24 H25 N O5  C24 H25 N O5  
Mr 407.45 407.45  
Dx,g cm-3 1.260 1.260  
Z 4 4  
Mu (mm-1) 0.720 0.720  
F000 864.0 864.0
F000' 866.73   
h,k,lmax 10,16,21 10,16,21
Nref 4253[ 2424] 4200  
Tmin,Tmax 0.866,0.866 0.869,0.869
Tmin' 0.866  
Correction method= MULTI-SCAN  
Data completeness= 1.73/0.99 Theta(max)= 72.500
R(reflections)= 0.0807( 3674) wR2(reflections)= 0.2290( 4200)
S = 1.061 Npar= 278

--------------------------------------------------------------------------------

The following ALERTS were generated. Each ALERT has the format
       test-name_ALERT_alert-type_alert-level.
Click on the hyperlinks for more details of the test.

--------------------------------------------------------------------------------Alert level A
PLAT902_ALERT_1_A No (Interpretable) Reflections found in FCF ....          ! Check
PLAT997_ALERT_1_A Unsuitable CIF/FCF File Combination with SHELXL CIF       ! Error
--------------------------------------------------------------------------------Alert level B
PLAT035_ALERT_1_B No _chemical_absolute_configuration info given .          ? Do !
--------------------------------------------------------------------------------Alert level C
PLAT241_ALERT_2_C Check High      Ueq as Compared to Neighbors for         O3      
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for        C14      
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for        C17      
PLAT340_ALERT_3_C Low Bond Precision on  C-C Bonds ...............     0.0046 Ang.
PLAT352_ALERT_3_C Short   N-H (X0.87,N1.01A) N1     -   H1     ...       0.75 Ang.
--------------------------------------------------------------------------------Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details  in the CIF          ? Do !
PLAT032_ALERT_4_G Std. Uncertainty on Flack Parameter Value High .      0.400      
PLAT072_ALERT_2_G SHELXL First  Parameter in WGHT Unusually Large.       0.18      
PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature        293 K   
PLAT200_ALERT_1_G Check the Reported   _diffrn_ambient_temperature        293 K   
PLAT791_ALERT_4_G Note: The Model has Chirality at C2     (Verify)          S      
And 3 other PLAT791 Alerts
More ...PLAT791_ALERT_4_G Note: The Model has Chirality at C10    (Verify)          S      
PLAT791_ALERT_4_G Note: The Model has Chirality at C11    (Verify)          S      
PLAT791_ALERT_4_G Note: The Model has Chirality at C12    (Verify)          S      
--------------------------------------------------------------------------------   2 ALERT level A = Most likely a serious problem - resolve or explain
   1 ALERT level B = A potentially serious problem, consider carefully
   5 ALERT level C = Check. Ensure it is not caused by an omission or oversight
   9 ALERT level G = General information/check it is not something unexpected

   5 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   4 ALERT type 2 Indicator that the structure model may be wrong or deficient
   2 ALERT type 3 Indicator that the structure quality may be low
   5 ALERT type 4 Improvement, methodology, query or suggestion
   1 ALERT type 5 Informative message, check
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hesperus329

金虫 (正式写手)

引用回帖:
2楼: Originally posted by stalart at 2013-06-12 21:42:25
你这个晶体还需要进一步精修

怎么精修啊?还请指教。
3楼2013-06-12 22:11:41
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stalart

木虫 (正式写手)

【答案】应助回帖

感谢参与,应助指数 +1
你这个晶体还需要进一步精修
2楼2013-06-12 21:42:25
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