1,3,5-triphenyl-1,3,5-diazaphosphinane

1,3-dibenzyl-5-phenyl-1,3,5-diazaphosphinane

1,3-bis(4-methylphenyl)-5-phenyl-1,3,5-diazaphosphinane

1,3,5,7-tetraphenyl-1,5,3,7-diazadiphosphocane

3-phenyl-1,2,4,5-tetrahydro-1,5,3-benzodiazaphosphepine