Syntheses and X-ray structures of molecular metal polyselenide complexes [M(Se4)2]2− M = Zn, Cd, Hg, Ni, Pb

doi:10.1016/S0277-5387(00)86427-X

Polyhedron

Volume 8, Issue 15, 1989, Pages 1995-1998

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Abstract

Bis-tetraselenide complexes [M(Se₄)₂]²⁻ M = Zn (1), Cd (2), Hg (3), Ni (4) and Pb (5) are readily prepared by the reaction of Se, Na and MCl₂ in DMF, and crystallized with Ph₄P⁺. Crystal structure determinations reveal pseudo-tetrahedral coordination in 1, 2 and 3, slightly distorted square-planar coordination in 4, and in 5 a four coordinate stereochemistry interpreted as primary trigonal orthogonal, plus one secondary bond. There is no evidence of variable size in the metallapolyselenane chelate rings, in contrast with data for comparable polysulphide complexes.

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Citation Excerpt :
Examples are the polysulfides [Zn(py)2S6] [1], (Ph4P)2[WS2(μ-S)2{Zn(S6)}]·Me2CO [2], [ZnS4(PMDETA)] [3], [ZnS6(TMEDA)] [4], (Ph4P)2[(PhS)2Zn(S4)], (Ph4P)2[Zn(S4)2], (Et4P)2[Zn(S4)2], (Ph4P)2[(PhS)2Zn(S5)], (Ph4P)2[Zn(S5)2], (Ph4P)2[Zn(S6)2] [5], [ZnS6(N-MeIm)2] [6]. Among the polyselenides, complexes like (Ph4P)2[Zn(Se4)2] [7], (PPh4)6[Zn(Se4)2]2[WSe4]·DMF [8], [ZnSe4(N-MeIm)2] [6] are known. Relatively few respective polytellurides are represented in the literature, such as [K(15-crown-5)2]2[ZnTe7] [9] and (PPh4)2[Zn(Te4)2] [10].
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Polyhedron

Abstract

References (7)

Adv. Inorg. Chem. Radiochem.

Angew. Chem. Int. Ed. Engl.

Inorg. Chem.

Cited by (57)

Polychalcogen molecules, ligands, and ions Part 2: Catenated acyclic molecules, ions, and p-block element derivatives

Catenated Compounds - Group 16 (Se, Te)

1D coordination polymers with polychalcogenides as linkers between metal atoms

Zinc

Three- and Low-Dimensional Inorganic Semiconductors

Bis(N,N,N-trimethyl-ethanaminium) bis-(1,4-tetraselenido-k<sup>2</sup> Se <sup>1</sup>,Se <sup>4</sup>)cadmate

CommunicationSyntheses and X-ray structures of molecular metal polyselenide complexes [M(Se4)2]2− M = Zn, Cd, Hg, Ni, Pb

Abstract

Adv. Inorg. Chem. Radiochem.

Angew. Chem. Int. Ed. Engl.

Inorg. Chem.

Communication
Syntheses and X-ray structures of molecular metal polyselenide complexes [M(Se₄)₂]²⁻ M = Zn, Cd, Hg, Ni, Pb