Spirobicycloalkane

A spirobicycloalkane is a bicycloalkane whose molecule has only one carbon atom shared by the two rings in the molecule.  The carbon atom shared by the two rings is called the spirocarbon.  A chain of bonds originating and ending at the spirocarbon is called a bridge.

eg:       spiro[4.5]decane



see also bridged bicycloalkane

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