Synthesis of 2,3,5,6-Tetrahydro-1H,4H,11cH-3a,6a,11b-triazabenz(de)anthracene (VII) and X-Ray Crystal Structure Determinations of (VII), Hexahydro-1H,4H,7H,9bH-3a,6a,9a-triazaphenalene, Benzo(b)-1,5,9-triazadodecane-N,N′,N′′-tritosyla