Acta Cryst. (2001). E57, o1230-o1232  [ doi:10.1107/S1600536801019961 ]

Spiro[2-carbomethoxy-5-(4-methoxyphenyl)-3-phenylpyrrolidine-4,3'-chroman-4'-one]

M. N. Nissa, V. Rajakannan, M.-J. Kim and D. Velmurugan

Online 30 November 2001

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (C-C) = 0.003 Å
• R factor = 0.043
• wR factor = 0.128
• Data-to-parameter ratio = 13.2

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level C:



WEIGH_01  Alert C Extra text has been found in the                              
          _refine_ls_weighting_scheme field. This should be in the              
          _refine_ls_weighting_details field.                                   
          Weighting scheme given as calc w = 1/[\s^2^(Fo^2^)+(0.0663P)^2^+0.289 
          Weighting scheme identified as calc                                   

PLAT_420  Alert C D-H Without Acceptor       N(1)   -   H(1)              ?


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 2 Alert Level C = Please check

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