182890-89-7Relevant academic research and scientific papers
Complexes of - (E = S or Se): Disparate Ring Conformations within a New Palladacycle
Slawin, Alexandra M. Z.,Smith, Martin B.,Woollins, J. Derek
, p. 3659 - 3666 (2007/10/03)
A new mixed oxygen-selenium ligand Ph2P(O)NHP(Se)Ph2, its potassium salt K and the bis(chelate) palladium(II) complex cis-2> have been prepared.In cis-2> the two cis six-membered Pd-O-P-N-P-Se rings adopt different conformations; one is a pseudo-boat whilst the other is chair-like (X-ray evidence).Reaction of 2 equivalents of K with (cod = cycloocta-1,5-diene) in MeOH, or more conveniently using the methoxo-bridged platinum(II) dimer 2> (C8H12OMe = 8-methoxycyclooct-4-en-1-yl), afforded > as one isomer only.The mixed oxygen-sulfur salt K was used to prepare similar compounds, all of which have been characterised by a combination of multinuclear NMR ((31)P-, (195)Pt- and (1)H), IR spectroscopy and microanalysis.The molecular structures of Ph2P(O)NHP(S)Ph2, cis-2> and > have been determined by single-crystal X-ray diffraction.
