[Open access]

[Contents scheme]

Acta Cryst. (2013). E69, o462-o463
[ doi:10.1107/S1600536813005217 ]

2-Amino-4-(4-chlorophenyl)-4H-chromeno[8,7-b]pyridine-3-carbonitrile

A.E.-G.E. Amr, A. M. El-Agrody, N. M. Sabry, S. W. Ng and E. R. T. Tiekink


Key indicators

checkCIF/PLATON results

No syntax errors found




Alert level C PLAT026_ALERT_3_C Ratio Observed / Unique Reflections too Low .... 47 Perc. PLAT230_ALERT_2_C Hirshfeld Test Diff for C30 -- C32 .. 5.5 su PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C17 PLAT334_ALERT_2_C Small Average Benzene C-C Dist. C14 -C19 1.37 Ang. PLAT340_ALERT_3_C Low Bond Precision on C-C Bonds ............... 0.0044 Ang PLAT420_ALERT_2_C D-H Without Acceptor N5 - H4 ... ? PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 13.099 PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 2.779 PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 6
Alert level G PLAT005_ALERT_5_G No _iucr_refine_instructions_details in the CIF ? PLAT128_ALERT_4_G Alternate Setting of Space-group P21/c ....... P21/n PLAT371_ALERT_2_G Long C(sp2)-C(sp1) Bond C11 - C13 ... 1.42 Ang. PLAT434_ALERT_2_G Short Inter HL..HL Contact Cl2 .. Cl2 . 3.39 Ang. PLAT793_ALERT_4_G The Model has Chirality at C12 (Verify) .... R PLAT793_ALERT_4_G The Model has Chirality at C31 (Verify) .... S
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 9 ALERT level C = Check. Ensure it is not caused by an omission or oversight 6 ALERT level G = General information/check it is not something unexpected 0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 6 ALERT type 2 Indicator that the structure model may be wrong or deficient 5 ALERT type 3 Indicator that the structure quality may be low 3 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check

Copyright © International Union of Crystallography
IUCr Webmaster