Some Boron-Containing Ring Systems

Abstract

The synthesis and characterisation of series of new types of boron-containing ring systems are described. They include:

(a) carborane systems containing C-H--X (X = O or N) hydrogen bonds;

(b) systems in which C_n rings share C-C links with o-carborane units;

(c) macrocycles containing 2,3 or 4 carborane icosahedra linked through benzene or pyridine rings, and

(d) ‘new types of ‘carborazacycles’ containing one carbon, two boron and three nitrogen atoms in a single 6-membered ring system.

Keywords:

• carborane assemblies
• macrocycles
• carborazacycles
• hydrogen-bonding