Phosphorus and the Heavier Group V Donor Ligands

HRPCH2PRH and R2PCH2PR2 (R = alkyl). Products formed by cleavage 

Arsine decomposes in the presence of [(n-CgMeg)Mn(CO)2(THF)] to give an arsinidene fragment which acts as a symmetrical 

Transition metal-dlphosphene complexes continue to be explored. 

Reactions of metal carbonyls with the cyclotetraphosph(III)-azane [MePNMe]. yield [M(CO),(MePNMe) ] (M = Cr, Mo, W or Mn ) and [Ni2(CO)2(W-CO)(MePNMe)complexes. Routes to several P-bonded metallocyclotriphosph(V)azene complexes e.g. [CpCr(CO)3(N2P3C1 )], 

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