(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2007). E63, o1774-o1776 [ doi:10.1107/S1600536807011439 ]

Zolmitriptan, an antimigraine drug

K. Ravikumar, B. Sridhar and H. Krishnan

Online 16 March 2007

Key indicators

Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.004 Å
R factor = 0.040
wR factor = 0.107
Data-to-parameter ratio = 7.7

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT089_ALERT_3_C Poor Data / Parameter Ratio (Zmax .LT. 18) .....       7.75      
PLAT241_ALERT_2_C Check High      Ueq as Compared to Neighbors for         O1     
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for         N2     

Alert level G
REFLT03_ALERT_4_G 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.
           From the CIF: _diffrn_reflns_theta_max           25.00
           From the CIF: _reflns_number_total               1549
           Count of symmetry unique reflns         1550
           Completeness (_total/calc)             99.94%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured         0
           Fraction of Friedel pairs measured     0.000
           Are heavy atom types Z>Si present         no
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_1_G Confirm the Absolute Configuration of C14    = .          S      

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   3 ALERT level C = Check and explain
   4 ALERT level G = General alerts; check

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