14 research outputs found
1,3-Diphospha-2-silaallylic Lithium Complexes and Anions: Synthesis, Crystal Structures, Reactivity, and Bonding Properties
Structural and Coordination Properties of 3, 3-Diphenyl-1-(2, 4, 6-tri-tert-butylphenyl)-2-(trimethylsilyl)-1, 3-diphosphapropene Derivatives Showing Interesting Conformational Features
Diastereoselective formation of complexed methylenediphosphiranes
Stable syn-substituted methylenediphosphirane complexes are obtained from the reaction of transient, electrophilic phosphinidenes [R-PdW(CO)5] (R ) Me, Ph), thermally generated from the corresponding benzophosphepines, with 1-phosphaallene. A DFT analysis at the B3PW91/6-31G(d) level of theory reveals that the high diastereoselectivity of this reaction results from the preferred negative activation energy for syn cyclization of the P,P-ylide intermediates