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Acta Cryst. (2013). E69, o1272  [ doi:10.1107/S1600536813017960 ]

3,4-Dimethylthieno[2,3-b]thiophene-2,5-dicarbonitrile

Y. N. Mabkhot, S. S. Al-Showiman, A. Barakat, M. I. Choudhary and S. Yousuf


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Alert level C PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 3.502
Alert level G PLAT005_ALERT_5_G No _iucr_refine_instructions_details in the CIF ? Do ! PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 273 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature 273 K PLAT371_ALERT_2_G Long C(sp2)-C(sp1) Bond C1 - C7 ... 1.42 Ang. PLAT371_ALERT_2_G Long C(sp2)-C(sp1) Bond C5 - C10 ... 1.43 Ang. PLAT371_ALERT_2_G Long C(sp2)-C(sp1) Bond C11 - C17 ... 1.42 Ang. PLAT371_ALERT_2_G Long C(sp2)-C(sp1) Bond C15 - C20 ... 1.42 Ang. PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L= 0.600 30
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 1 ALERT level C = Check. Ensure it is not caused by an omission or oversight 8 ALERT level G = General information/check it is not something unexpected 2 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 1 ALERT type 3 Indicator that the structure quality may be low 1 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check

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