| Abstract
| - Molecules containing a double bond between hypervalent atoms were designed, and the bicyclic hypervalent SbSb and BiBi molecules with two carboxylato bridges were found to be kinetically and thermodynamically stable.
- Molecules that contain a double bond between hypervalent atoms were designed. They includedmonocyclic five-membered ring molecules [HCO2(FPn)2]- and bicyclic molecules [HCO2Pn]2 (Pn =Sb, Bi), which contain one and two carboxylato (HCO2)- bridges between the doubly bonded pnictogenatoms, respectively. The bicyclic molecules are kinetically and thermodynamically more stable than themonocyclic molecules.
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