Systems with One Heteroatom, and their Benzo-analogues

Systems with One Heteroatom and their Benzo-analogues etc. 

This review covers 71-excessive five-membered ring systems containing one arsenic, antimony, or bismuth atom within the ring. Their benzo-, dibenzo-, unsaturated, partially unsaturated, and saturated analogues are also covered. These heteroatoms can have expanded valence shells and thus different coordination numbers (CN) are included as well. Although not strictly covered in this Chapter, mention is made of systems containing one of the above heteroatoms with another atom within the ring, but usually to show an important property of the system. 

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