(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2004). E60, o690-o691 [ doi:10.1107/S160053680400707X ]

The Diels-Alder adduct of p-benzoquinone and anthracene: 9,10-tetrahydro-9,10[1',2']benzenoanthracene-1',4'(2'H,3'H)-dione

H. Adams, I. Ojea-Jimenez and S. Jones

Online 31 March 2004

Key indicators

Single-crystal X-ray study
T = 150 K
Mean (C-C) = 0.003 Å
R factor = 0.047
wR factor = 0.136
Data-to-parameter ratio = 11.9

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT029_ALERT_3_C _diffrn_measured_fraction_theta_full Low .......       0.98       
PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical .          ?

   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

   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
   0 ALERT type 4 Improvement, methodology, query or suggestion