Subject: What is EXACTLY a "resonance"?

From: Shu-Kun Lin <[email-masked]>
Date: Thu, 23 Jan 1997 17:29:18 +0100

Dear colleagues:

There is no clear division between a resonance
and a chemical reaction e.g., the so-called "degenerate reaction"
(NH3 masser is a perfect example. If it is NR3, where R is big groups,
its a reaction: if it is NR'R"R"' where the three groups
are all different, the process is a typical and well-known
chemical reaction process - racemization!).

All the chemical processes, according to thermodynamics,
are driven by either energy or entropy effect. Then the
problem is still a big one.
Coulombic integral is very clearly understandable. Its sister term,
the resonance term contributed to energy eigenvalues
is by no means clear, even though there is
no special computational problem about it.

(Reply to the comment of Alain Kessi ([email-masked]))

Shu-Kun
[email-masked]