(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2004). E60, o1807-o1809 [ doi:10.1107/S1600536804022706 ]

Ethyl 3-amino-1-(4-chlorophenyl)-1H-benzo[f]chromene-2-carboxylate

D. Shi, X. Wang and Q. Zhuang

Online 18 September 2004

Key indicators

Single-crystal X-ray study
T = 291 K
Mean (C-C) = 0.003 Å
R factor = 0.039
wR factor = 0.107
Data-to-parameter ratio = 12.7

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors  for         C1     
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors  for         C4     
PLAT353_ALERT_3_C Long    N-H Bond (0.87A)   N      -   H1A    ...       1.01 Ang.  
PLAT411_ALERT_2_C Short Inter H...H Contact  H5     ..  H5      ..       2.14 Ang.  

Alert level G
ABSTY01_ALERT_1_G  Extra text has been found in the _exptl_absorpt_correction_type
            field, which should be only a single keyword. A literature
            citation should be included in the _exptl_absorpt_process_details
            field.

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

   1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   3 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
   0 ALERT type 4 Improvement, methodology, query or suggestion