95465-08-0Relevant academic research and scientific papers
Preparation and chemistry of novel platinum(II) amide complexes containing β-hydrogens
Bryndza, Henry E.,Fultz, William C.,Tam, Wilson
, p. 939 - 940 (2008/10/08)
Synthesis of new platinum(II) amide complexes has been accomplished both by metathesis of L2PtR(Cl) (L2 = DPPE = 1,2-bis(diphenylphosphino)ethane, R = CH3, CH3, C6H5, CH2C6H5; L2 = DMPE = 1,2-bis(dimethylphosphino)ethane, R = CH3), with LiNCH3(C6H5) and by exchange of free amine with the analogous methoxide complexes. (DPPE)PtCH3[N(CH2C6H5)(H)], prepared from (DPPE)PtCH3(Cl) and LiN(CH2C6H5)(H), reacts with CO to give (DPPE)PtCH3[C(O)N(CH2C6H5)(H)]. (DMPE)PtCH3[NCH3(C6H5)] crystallizes from THF/hexane in space group P21/n with cell dimensions a = 6.2790 (8) ?, c = 16.894 (2) ?, and β = 96.47 (1)° with Z = 4. The favorable equilibrium for the displacement of methanol by N-methylaniline suggests the metal-nitrogen bond is much less prone to dissociation of amide than are metal-oxygen bonds to dissociation of methoxide and requires the Pt-COH3 homolytic bond strength be 16 kcal/mol stronger than the Pt-NCH3(C6H5) bond. Reaction of (DPPE)PtCH3(NCH3(C6H5)) with methyl iodide and acetyl chloride shows these amide complexes react as nucleophiles despite their inability to dissociate free amide.
