From rassolov(+ at +)chem.nwu.edu Thu Apr 24 17:38:30 1997 Received: from mercury.chem.nwu.edu for rassolov[ AT ]chem.nwu.edu by www.ccl.net (8.8.3/950822.1) id QAA16534; Thu, 24 Apr 1997 16:46:36 -0400 (EDT) Received: from potassium.chem.nwu.edu by mercury.chem.nwu.edu (AIX 3.2/UCB 5.64/4.03) id AA24091; Thu, 24 Apr 1997 15:46:50 -0500 Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Thu, 24 Apr 1997 15:45:47 -0600 To: chemistry |-at-| www.ccl.net From: "Vitaly A. Rassolov" Subject: Relativity: Gaunt vs. Breit in molecules Hello everyone, The leading term in relativistic electron-electron interaction is described by the Breit Hamiltonian. It is often stated in the literature that the Gaunt (magnetic) part of this interaction is more important than the rest (the effect of retardation). Is anyone aware of the calculation on molecular (as opposed to atomic) system that compares these two effects? Vitaly Rassolov Department of Chemistry tel. (847) 491-3423 Northwestern University 2145 Sheridan Rd. rassolov $#at#$ chem.nwu.edu Evanston, IL 60208-3113