Organic Chemistry: Current Research
Open Access

Carboranes and metallacarboranes: Advances and new perspectives

3^rd International Conference on Organic and Inorganic Chemistry

July 17-19, 2017 Chicago, USA

Narayan S Hosmane

Northern Illinois University, USA

Posters & Accepted Abstracts: Organic Chem Curr Res

Abstract :

Most of the carborane derivatives of the icosahedral (C2B10) or small cage (C2B4) systems are formed, by varying the groups on the cage carbons. This is usually accomplished in the original carborane synthesis by reacting substituted acetylenes with either the B10H14 or B5H9 precursors. These reactions led directly to the carbons adjacent carboranes in which the carbon atoms occupy adjacent positions in the cage. The larger cages are obtained as closo-icosahedra, while the small cage, C2B4-carboranes, have nido- structures. There is another geometry of the small cages in which the carbon atoms are separated by a boron atom. Although these carbons apart or nido-2,4-(CR)2B4H6 species are thermodynamically more stable and are more symmetric than the carbons adjacent isomers, they are not as well studied. The main reasons for the relative scarcity of information on the carbons systems lie in their method of preparation. They must be synthesized from their carbons adjacent analogues through sequential oxidative cage closure/reductive cage opening reactions. The historic perspective of the chemistry of carboranes and metallacarboranes with the latest findings in our research involving boron nanomaterials will be presented in detail.

Biography :

Email: hosmane@niu.edu