4,4-dimethyl-2-phenyl-1,2λ⁵-oxaphospholane 2-oxide

N-[diethylamino(phenyl)phosphoryl]-N-ethylethanamine

1,3-dimethyl-2-phenyl-2-sulfanylidene-1,3,2$l^{5}-benzodiazaphosphole

3-methyl-2-phenyl-2-sulfanylidene-1H-1,3,2λ⁵-benzodiazaphosphole