Acta Cryst. (2003). E59, m319-m321  [ doi:10.1107/S1600536803008997 ]

[Benzyldimethyl(dimethylamino)silyl-²C,N](N,N,N,N-tetramethylenediamine-²N,N)lithium(I)

H.-P. Shi, D.-S. Liu and S.-P. Huang

Online 16 May 2003

Key indicators

• Single-crystal X-ray study
• T = 183 K
• Mean (C-C) = 0.008 Å
• R factor = 0.076
• wR factor = 0.104
• Data-to-parameter ratio = 16.7

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level C:



RINTA_01  Alert C The value of Rint is greater than 0.10                        
          Rint given   0.122                                                    

STRVAL_01                                                                       
         From the CIF: _refine_ls_abs_structure_Flack   -0.300                  
         From the CIF: _refine_ls_abs_structure_Flack_su    0.300               
           Alert C Flack parameter is too small                                 

PLAT_213  Alert C Atom C17     has ADP max/min Ratio ...........       3.30 prolate

PLAT_320  Alert C Check Hybridisation of  C(14)  in Main Residue          ?

PLAT_320  Alert C Check Hybridisation of  C(15)  in Main Residue          ?

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           25.00                 
         From the CIF: _reflns_number_total               3588                  
         Count of symmetry unique reflns         2061                           
         Completeness (_total/calc)            174.09%                          
         TEST3: Check Friedels for noncentro structure                          
         Estimate of Friedel pairs measured      1527                           
         Fraction of Friedel pairs measured     0.741                           
         Are heavy atom types Z>Si present          yes                         
          Please check that the estimate of the number of Friedel pairs is      
          correct. If it is not, please give the correct count in the           
          _publ_section_exptl_refinement section of the submitted CIF.          


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 5 Alert Level C = Please check

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