[Open access]

[Contents scheme]

Acta Cryst. (2013). E69, o284
[ doi:10.1107/S1600536812051872 ]

(Z)-3-(1-Hydroxy-3-oxobut-1-enyl)-6-nitro-2H-chromen-2-one

N. S. Topno, V. Tangeti, H. S. P. Rao and R. Krishna


Key indicators

checkCIF/PLATON results

No syntax errors found




Alert level C PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for N1 PLAT751_ALERT_4_C Bond Calc 0.00000, Rep 0.000(5) ...... Senseless su O4 -O4 1.555 1.555 # 15 PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 3.920 PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 3
Alert level G PLAT005_ALERT_5_G No _iucr_refine_instructions_details in the CIF ? PLAT007_ALERT_5_G Note: Number of Unrefined D-H Atoms ............ 1 PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature 293 K PLAT764_ALERT_4_G Overcomplete CIF Bond List Detected (Rep/Expd) . 1.19 Ratio PLAT779_ALERT_4_G Suspect or Irrelevant (Bond) Angle in CIF .... # 18 O4 -O4 -C12 1.555 1.555 1.555 0.00 Deg. PLAT779_ALERT_4_G Suspect or Irrelevant (Bond) Angle in CIF .... # 28 O2 -O2 -C1 1.555 1.555 1.555 0.00 Deg. PLAT779_ALERT_4_G Suspect or Irrelevant (Bond) Angle in CIF .... # 38 O2 -C1 -O2 1.555 1.555 1.555 0.00 Deg. PLAT779_ALERT_4_G Suspect or Irrelevant (Bond) Angle in CIF .... # 50 O4 -C12 -O4 1.555 1.555 1.555 0.00 Deg. PLAT909_ALERT_3_G Percentage of Observed Data at Theta(Max) still 41 Perc.
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 4 ALERT level C = Check. Ensure it is not caused by an omission or oversight 10 ALERT level G = General information/check it is not something unexpected 2 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 1 ALERT type 2 Indicator that the structure model may be wrong or deficient 3 ALERT type 3 Indicator that the structure quality may be low 6 ALERT type 4 Improvement, methodology, query or suggestion 2 ALERT type 5 Informative message, check

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