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Acta Cryst. (2005). E61, o2727-o2729  [ doi:10.1107/S1600536805023834 ]

(2R,3S,4S,5R)-Methyl 5-cyano-2,3:4,5-di-O-isopropylidene-2,3,4,5-tetrahydroxypentanoate

A. Glawar, B. A. Mayes, D. Watkin and G. W. J. Fleet

Online 27 July 2005

Key indicators

checkCIF/PLATON results

No syntax errors found

Alert level C PLAT063_ALERT_3_C Crystal Probably too Large for Beam Size ....... 0.80 mm PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given ....... ? PLAT230_ALERT_2_C Hirshfeld Test Diff for C13 - C14 .. 5.56 su
Alert level G REFLT03_ALERT_4_G Please check that the estimate of the number of Friedel pairs is correct. If it is not, please give the correct count in the _publ_section_exptl_refinement section of the submitted CIF. From the CIF: _diffrn_reflns_theta_max 27.52 From the CIF: _reflns_number_total 1848 Count of symmetry unique reflns 1877 Completeness (_total/calc) 98.45% TEST3: Check Friedels for noncentro structure Estimate of Friedel pairs measured 0 Fraction of Friedel pairs measured 0.000 Are heavy atom types Z>Si present no
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 3 ALERT level C = Check and explain 1 ALERT level G = General alerts; check 0 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 1 ALERT type 3 Indicator that the structure quality may be low 2 ALERT type 4 Improvement, methodology, query or suggestion

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