Tables of final atomic coordinates and thermal factors can be added when necessary. When anisotropic thermal factors are submitted, the equivalent isotropic thermal factors, B eq , also should be included. On the basis of an agreement between the Chemical Society of Japan and the Cambridge Crystallographic Data Centre, the Editorial Office will deposit results of all X-ray crystallographic data in that database. Authors will be requested to send crystallographic data, details of measurement, atomic coordinates, thermal factors if needed, bond distances, and bond angles in the CIF format or in an alternative format to the Editorial Office via e-mail. Further details are available from the Editorial Office.
Bulletin is published after computer editing.
The former type of the clusters are more stable. The ionization energies of the former type are in good agreement with the experimental energies of Fuke's group. The reaction mechanisms of the formation of hydrocarbons in interstellar space were examined with an ab initio molecular orbital calculation. Because of the very attractive interaction of positive ions with the hydrogen molecule, most of the reactions such as reaction 1 proceed via energy-rich intermediates. The iminium ions thus formed react with various carbon nucleophiles to give the corresponding addition products under the mild reaction conditions.