Sodium













Calibration of the






PBE1PBE/cc-pCVQZ/cc-pVQZ *






model












* cc-pCVQZ on Na, cc-pVQZ on other atoms.  These bases were obtained from the EMSL basis set library.












This is the recommended model, calibration statistics for which are shown below.  A summary of the results for a number of other models is given here.












Calibration was made by linear regression analysis of calculated electric field gradients vs experimental nuclear quadrupole coupling constants.  Calculations of the field gradients were made on the experimental structures of the following molecules:





 
NaF NaCl NaBr NaH NaOH
 













Figure 1.  PDF  Calculated efg's vs experimental nqcc's.













23Na






 


Number of Points
15




Correlation Coefficient
0.99995




Residual Standard Deviation
0.049 MHz (1.1 %)




Slope, eQeff/h
25.499(69) MHz/a.u.




Qeff 108.52(29) mb




Q
104(1) mb [1]


 













Reference






[1] P.Pyykkö and A.J.Sadlej, Chem.Phys.Lett. 227,221(1994).












"Nuclear quadrupole coupling constants in alkali halide molecules: an ab initio quantum chemical study" G.B.Bacskay and A.D.Buckingham, Mol.Phys. 91,391(1997).












Table of Contents






Sodium Molecules

















 

Sodium.html

Last modified 6 Dec 2004