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Acta Cryst. (2012). E68, i5-i6  [ doi:10.1107/S1600536811052482 ]

An ammonium iron(II) pyrophosphate, (NH4)2[Fe3(P2O7)2(H2O)2], with a layered structure

B. Liu, X. Zhang, L. Wen, W. Sun and Y.-X. Huang

Online 10 December 2011


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Alert level C REFLT03_ALERT_3_C Reflection count < 95% complete From the CIF: _diffrn_reflns_theta_max 28.26 From the CIF: _diffrn_reflns_theta_full 28.26 From the CIF: _reflns_number_total 1652 TEST2: Reflns within _diffrn_reflns_theta_max Count of symmetry unique reflns 1763 Completeness (_total/calc) 93.70% PLAT042_ALERT_1_C Calc. and Reported MoietyFormula Strings Differ ? PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L= 0.600 111
Alert level G PLAT004_ALERT_5_G Info: Polymeric Structure Found with Dimension . 1 PLAT005_ALERT_5_G No _iucr_refine_instructions_details in CIF .... ? PLAT793_ALERT_4_G The Model has Chirality at P2 (Verify) .... R
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 3 ALERT level C = Check. Ensure it is not caused by an omission or oversight 3 ALERT level G = General information/check it is not something unexpected 1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 0 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 2 ALERT type 4 Improvement, methodology, query or suggestion 2 ALERT type 5 Informative message, check

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