152. Functionalized Cyclotriphosphanes of the Type ( t -BuP) 2 PX (X = K, SiMe 3 , SnMe 3 , Cl, Br, PCl 2 , P( t -Bu)Cl, P( t -Bu)I) Functionalized cyclotriphosphanes of the type ( t -BuP) 2 PX with electropositive or electronegative substituents X have been prepared ...