Structural Diversity of [M{N(SePPh2)2/Se,Se'}2,3] [M(II)=Sn, Pb, Cd, Hg, Se; M(III)=In, Sb, Bi].

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Authors	CEA OLIVERAS R. GARCÍA MONTALVO V. NOVOSAD J. KILIÁN P. WOOLLINS JD SLAWIN AMZ
Year of publication	1997
Type	Article in Periodical
Magazine / Source	Phosphorus, Sulfur Silicon Rel. Elem.
MU Faculty or unit	Faculty of Science
Citation
Field	Inorganic chemistry
Keywords	phosphazene metallacycles; selenium ligands; main group complexes; Sn(II) square planar
Description	The anion [N(SePPh2)(2)](-) forms stable complexes with cations M(II, III); [M(II) = Sn, Se, Cd, Hg; M(III) = In, Sb, Bi], they exhibit a large diversity of structural arrangements around the metal centre. Tin(II) complex crystallizes dimorphically, as square planar and distorted tetragonal pyramidal, Pb(II) is also distorted tetragonal pyramidal, Cd(II) and Hg(II) are tetrahedral, but the Se(II) is square planar. The coordination geometry in the M(III) complexes can be described as a distorted octahedron. The structural situation around the Sb(III) and Bi(III) suggests a stereochemically non-active electron lone pair.
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