A. Sygula et al., BOWL STACKING IN CURVED POLYNUCLEAR AROMATIC-HYDROCARBONS - CRYSTAL AND MOLECULAR-STRUCTURE OF CYCLOPENTACORANNULENE, Journal of the Chemical Society, Chemical Communications, (22), 1994, pp. 2571-2572
Cyclopentacorannulene (dibenzo [ghi,mno]cyclopenta[cd]fluoranthene) ex
hibits long-range concave-convex bowl stacking in the crystal; its mol
ecular structure is satisfactorily described by ab initio calculations
at both HF/3-21G and HF/6-31G levels.