Email Record: The crystal and molecular structures of 2,3,4-Triphenylbicyclo[3.2.1]oct-2-ene, 4-Bromo-1,7,7-trimethyl-2,3-benzobicyclo[3.3.1]non-2-ene, and Dibenzo[1,4,8,11]tetraaza[14]annulenato-bis[tricarbonylrhenium(I)] /