Superelectrophilic Anion
Superelectrophilic anions are a class of molecular ions that exhibit highly Electrophile, electrophilic reaction behavior despite their overall negative charge. Thus, they are even able to bind the unreactive noble gases or molecular nitrogen at room temperature. The only representatives known so far are the fragment ions of the type [B12X11]– derived from the closo-dodecaborate dianions [B12X12]2–. X represents a substituent connected to a boron atom (cf. Fig. 1). For this reason, the following article deals exclusively with superelectrophilic anions of this type. Overview Anions are negatively charged ions and therefore usually exhibit Nucleophile, nucleophilic reaction behavior. However, it has been shown that there are anions which behave in a strongly electrophilic manner despite their Negative Charge, negative charge. This means that they form bonds with reaction partners in chemical reactions by accepting electron density from them. Their affinity for electrons is so ...
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