Subject: CCL: Spin-orbit coupling in conjugated systems

From: Mark Kobrak <[email-masked]>
Date: Thu, 23 Sep 1999 08:15:50 -0700

Dear CCL,

        Is there a standard reference for incorporating spin-orbit
coupling into semi-empirical electronic structure calculations on
conjugated organic molecules?  Our interest is really in the coupling
between singlet and triplet excited states, rather than dealing with
ground state open-shell systems or diradicals, and our focus is on
purely organic systems, not organometallics or halocarbons.

Thank you,
Mark Kobrak
[email-masked]