Remarkably stable trications and tetractions: the triheliomethyl trication (CHe3˙3+) and tetraheliomethane tetraction (CHe44+)
Abstract
High-level ab initio calculations predict that the triheliomethyl trication (CHe3˙3+) and tetraheliomethane tetraction (CHe44+) should be experimentally observable, despite the availability of extremely exothermic fragmentation processes.