Won't you always be able to put a slightly larger atom if you let the
atom move up or down out of the trigonal plane? Anyway, it sounds like
you are asking for the largest circle which fits in the hole between
three circles who are touching (this is a 2D problem?). Try a google for
"Descartes Circle Theorem" for 2D or "Soddy Circles" for nD. An answer
can even be found at the fountain of all human knowledge:
http://en.wikipedia.org/wiki/Descartes%27_theorem
Best,
Jon
Jean-Noel Chotard wrote:
Dear all,
I'm facing a geometrical problem which I hope will be obvious for some
of you.
How can we calculate the maximum atomic radius of an intersitial
trigonal site formed by 3 different atoms?
Does anybody know a mathematical way to do so or maybe even a software
which could calculate that?
Thank you.
