From: Axil Axil
* These planar clusters have six-fold symmetry and contain 7, 19, 37, 61, or 91 hydrogen atoms. These numbers are the so called magic numbers for closed-pack clusters. Could you provide a reference for that ? Thanks - Jones BTW - I changed the spelling of Rydberg, and 'magic' in the Subject Heading Only because my spell checker is apparently better than yours . <g>
