Bis(bidentate) Complexes of Imidobis(diphenylphosphino chalcogenides) [M{N(XPPh2)2 - X, X'}2] (X = S or Se; M = Ni, Pd or Pt).

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Authors	BHATTACHARYYA P. NOVOSAD Josef PHILLIPS J. SLAWIN A. M. Z. WILLIAMS D. J. WOOLLINS J. D.
Year of publication	1995
Type	Article in Periodical
Magazine / Source	J. Chem. Soc.,Dalton Trans., 1607 (1995).
MU Faculty or unit	Faculty of Science
Citation
Field	Inorganic chemistry
Keywords	MOLECULAR-STRUCTURE; CRYSTAL-STRUCTURE; REACTIVITY; ACID
Description	The compound NH(SePPh(2))(2) has been synthesised from NH(PPh(2))(2) and selenium in refluxing toluene. A range of complexes [M{N(XPPh(2))(2)-X, X'}(2)] (X = Se, M = Pt 1 or Pd 2; X = S, M = Pt 3, Pd 4 or Ni 5) of the monoanions derived from NH(SePPh(2))(2) and its sulfur analogue have been prepared. The new compounds have been characterised by microanalysis, NMR and IR spectroscopy. The crystal structures of NH(SePPh(2))(2), 1, 2 and 5 were determined. The neutral NH(SePPh(2))(2) crystallised as H-bonded dimer pairs with a noticeable difference in the hydrogen bonded End nonhydrogen bonded P=Se bond lengths. The P=Se groups are approximately anti. On complexation the anionic ligands are bidentate and in all cases the resulting MX(2)P(2)N rings are distinctly puckered.
Related projects:	Structure and character of bonding, properties and analysis of synthetic and natural molecular ensembles