(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2002). E58, o123-o125 [ doi:10.1107/S1600536802000090 ]

L-Phenylalanine L-phenylalaninium dihydrogenphosphate

B. Ravikumar, B. Sridhar and R. K. Rajaram

Online 11 January 2002

Key indicators

Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.016 Å
R factor = 0.063
wR factor = 0.184
Data-to-parameter ratio = 9.1

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           25.00                 
         From the CIF: _reflns_number_total               2439                  
         Count of symmetry unique reflns         2001                           
         Completeness (_total/calc)            121.89%                          
         TEST3: Check Friedels for noncentro structure                          
         Estimate of Friedel pairs measured       438                           
         Fraction of Friedel pairs measured     0.219                           
         Are heavy atom types Z>Si present          yes                         
          WARNING: Large fraction of Friedel related reflns may                 
                   be needed to determine absolute structure