Carbon Rich Compounds are defined here as carbon skeletons with a carbon-to-hydrogen ration of 1: (less than or equal 1), which includes all-carbon compounds, i.e. carbon allotrope. The current volume complements Topics in Current Chemistry Volume 196, which focussed on polycyclic aromatic compounds, by presenting an overview of the exciting recent results that have been achieved acetylene-based carbon rich structures. Leaders in the field present timely reviews on the synthesis, properties and chemistry of cyclic and macrocyclic oligoacetylenic structures, molecular scaffolding, arylene- and arylenevinylene-based oligomers and polymers, as well as carbon rich compounds from ethynylated Pi-complexes.