Synthesis of 1H-Diphosphirene, Phosphorus-Carbon Cage and 2,3-Dihydro-1,2,3-Triphosphete Tungsten Complexes

Abstract

New l#-diphosphirene and 2,3-dihydro-l,2,3-triphosphete tungsten complexes have been synthesized, by thermal decomposition of different 2#-azaphosphirene complexes in the presence of various phosphaalkynes. Novel phosphorus-carbon cage complexes were obtained, if a pentamethylcyclopentadienyl-substituted 2//-azaphosphirene complex and alkyl-substituted phosphaalkynes were employed.

Synthesis and Properties of Phosphetanes

“…In one, a preformed phosphetane is simply coordinated to the desired metal center. In the other, the phosphetane ring is built from its components within a metal coordination sphere − (see section II). The performance of this second method is often excellent, as demonstrated by the synthesis of the iron-coordinated phosphetane complex 14 (eq 11), which is equal in terms of yield (84%) to its phospholane and phosphorinane analogues …”

Evidence for Terminal Phosphinidene Oxide Complexes in O,P,C-Cage Complex Formation: Rearrangement of Oxaphosphirane Complexes

“…This is of particular interest, as stable oxaphosphiranes are still unknown and azaphosphiridines quite rare. Although their heavier homologues, the thiaphosphiranes and diphosphiranes as well as their complexes III and IV , are known as such, many more investigations have been carried out on the free ligands of III and IV , respectively.…”