1,2,5-Triphenylphosphole

N,N-dimethyl-1-phenylphosphanylidenemethanamine

N,N-dimethyl-5-phenyl-1,3,5-dioxaphosphinan-2-amine

2,2-dimethyl-5-phenyl-1,3,5,2-dioxaphosphasilinane

2,5-diphenyl-1,3,5,2-dioxaphosphaborinane