1-(2,4,6-tri-tert-butylphenyl)phosphirane

3,4-dimethyl-1-supermesityl-3-phospholene

(E)-((2,6-bis(bis(trimethylsilyl)methyl)-4-(tris(trimethylsilyl)methyl)phenyl)bismuthanylidene)(2,4,6-tri-tert-butylphenyl)phosphane