84650-91-9Relevant academic research and scientific papers
THE NATURE OF THE Co-ORDINATE LINK. PART 11. SYNTHESIS AND PHOSPHORUS-31 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY OF PLATINUM AND PALLADIUM COMPLEXES CONTAINING SIDE-BONDED (E)-DIPHENYLDIPHOSPHENE. X-RAY CRYSTAL AND MOLECULAR STRUCTURES OF AND
Chatt, Joseph,Hitchcock, Peter B.,Pidcock, Alan,Warrens, Christopher P.,Dixon, Keith R.
, p. 2237 - 2244 (2007/10/02)
The complexes cis- react with Li2(PhPPPh) to give .Complex (1) reacts with (thf= tetrahydrofuran) to give (2).Complexes were characterized by 31P-(1H) n.m.r. spectroscopy.X-ray crystal-structure determinations of complexes (1) and (2) reveal nearly identical and planar PdP4 mieties comprising the donor atoms of L2 and η2- ligands.In (2) the two diphosphene lone pairs co-ordinate to W(CO)5 groups and the W-P bonds are bent 32 deg away from the Pd atom.The diphosphene P-P bond in (2) is 0.06 angstroem longer than that in (1) , which is similar to that in other diphosphene complexes and is approxymately mid-way between the P-P single and double bond lengths.Small values of the coupling constants 1J(PtP) and 2J(PP) involving the diphosphene ligand indicate that the diphosphene uses electrons of low s character in η2-co-ordination.
Synthesis and 31P N.M.R. Spectroscopy of Platinum and Palladium Complexes containing Side-bonded Diphenyldiphosphene. The X-Ray Crystal and Molecular Structure of >
Chatt, Joseph,Hitchcock, Peter B.,Pidcock, Alan,Warrens, Christopher P.,Dixon, Keith R.
, p. 932 - 933 (2007/10/02)
The structure of , dppe = bis(diphenylphosphino)ethane, obtained by a new and potentially general synthesis, is essentially planar with only a 3 deg twist between the two PdP2 planes and a P-P bond distance of 2.121(4) Angstrom; 31P n.m.r. data on the analogous platinum complexes show very small s-character in the Pt-P(diphosphene) bonds, suggesting that the structure is essentially a diphosphene bound to Pt0 rather than that of a diphosphido(2-) ligand bound to PtII.
