2,2-bis(4-methoxyphenyl)-6-phenyl-4,4-tetramethylene-1,3-dioxa-4-azonia-2-boratacyclohexane
6-phenyl-4,4-tetramethylenespiro{(1,3-dioxa-4-azonia-2-boratacyclohexane)-2,1'-(4',5'-dihydrodibenzo{b,f}boratepin)}
2,2-di(1-naphthyl)-6-phenyl-4,4-tetramethylene-1,3-dioxa-4-azonia-2-boratacyclohexane