(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2002). E58, o598-o599 [ doi:10.1107/S1600536802006141 ]

(S)-2,2'-Bis(dicyclohexylphosphinoamino)-1,1'-binaphthyl

R. Guo, L. Wang, J. Wu, M. C. K. Choi and Z. Zhou

Online 11 May 2002

Key indicators

Single-crystal X-ray study
T = 294 K
Mean (C-C) = 0.007 Å
R factor = 0.068
wR factor = 0.155
Data-to-parameter ratio = 19.3

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level C:



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

PLAT_420  Alert C D-H Without Acceptor       N(2)   -   H(2A)             ?

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           27.55                 
         From the CIF: _reflns_number_total               4786                  
         Count of symmetry unique reflns         4815                           
         Completeness (_total/calc)             99.40%                          
         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          yes                         
          WARNING: Large fraction of Friedel related reflns may                 
                   be needed to determine absolute structure                    


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 2 Alert Level C = Please check