Subject: Re: CCL:slater exchange functional for g92

From: [email-masked] (Michael Frisch)
Date: Wed, 23 Mar 94 17:08:43 EST

Scott Boesch asked
    	
    	Dear Netters,
    
    		Could anyone tell me what the form for the Slater
    	Exchange Functional used by Gaussian 92?  Exactly what are
    	the differences between the Slater Functional and the Xalpha
    	functional?
    
Both use Rho^(4/3).  Hartree-Fock-Slater uses the theoretical value of
2/3 for the coefficient in front while Xalpha requests the commonly
used empirical value of 0.7

Mike Frisch
Gaussian, Inc.
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