Boron mononuclear compounds

The redox properties of macrobicyclic iron(II) mono- and binuclear oximehydrazonates and a-dioximates formed by capping with antimony(V) and germanium(IV) triorganyles were studied by cyclic voltammetry [73, 74]. The electrochemical behaviour of these compounds is similar to that of analogous boron- and tin-capped clathrochelates. Oxidation of all mononuclear complexes involves a one-electron process, assigned to the oxidation of encapsulated iron(II) ion to iron(III) ion. This process is electrochemically... 

Boron. Boron is structurally the most bizarre element in the periodic table. Simple bonding rules that are applicable to the other elements have to be bent considerably in order to accommodate the behavior of boron. Boron should be a metal, but it is a semiconductor with unique structures and anomalous physical properties. Combined with metals it participates in metallic bonding but boron atoms are simultaneously covalently bonded to other boron atoms in the higher metal borides. Similar to carbon it does not form mononuclear ions, its halides are molecules, and its other compounds with nonmetals are solids. 

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