(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2009). E65, o685 [ doi:10.1107/S160053680900748X ]

Ethyl 2-(1,2,3,4-tetrahydrospiro[carbazole-3,2'-[1,3]dioxolan]-9-yl)acetate

P. M. G. Löffler, T. Ulven and A. D. Bond

Online 6 March 2009

Key indicators

Single-crystal X-ray study
T = 180 K
Mean (C-C) = 0.002 Å
R factor = 0.040
wR factor = 0.112
Data-to-parameter ratio = 18.5

checkCIF/PLATON results

No syntax errors found




Alert level C
ABSTM02_ALERT_3_C  The ratio of expected to reported Tmax/Tmin(RR') is < 0.90
            Tmin and Tmax reported:      0.847     0.991
            Tmin(prime) and Tmax expected:      0.953     0.991
            RR(prime) =      0.888
            Please check that your absorption correction is appropriate.
            Value of measurement temperature given =   180.000
            Value of melting point given =     0.000
PLAT061_ALERT_4_C Tmax/Tmin Range Test RR' too Large .............       0.89      

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   2 ALERT level C = Check and explain
   0 ALERT level G = General alerts; check

   0 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
   1 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check