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Diorganotellurium(IV) Dihalides and Secondary Bonding: Revisiting the Coordination Polyhedra

J. Zukerman‐Schpector, Ionel Haiduc

Open publisher page 35 citations

Abstract

The coordination geometry of the central atom in diorganotellurium(IV) halides, almost invariably described as ψ- trigonal bipyramidal, is in fact much more diversified. If intra and intermolecular secondary bonds and electron lone pairs are considered ψ-trigonal bipyramidal, ψ-octahedral, ψ-pentagonal bipyramidal and some others coordination geometries can be identified. A careful reexamination of a number of published structures is presented, with the analysis of the coordination polyhedra.

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What this paper is about

The coordination geometry of the central atom in diorganotellurium(IV) halides, almost invariably described as ψ- trigonal bipyramidal, is in fact much more diversified. If intra and intermolecular secondary bonds and electron lone pairs are considered ψ-trigonal bipyramidal, ψ-octahedral, ψ-pentagonal bipyramidal and some others coordination geometries can be identified. A careful reexamination of a number of published structures is presented, with the analysis of the coordination polyhedra.

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Available abstract

The coordination geometry of the central atom in diorganotellurium(IV) halides, almost invariably described as ψ- trigonal bipyramidal, is in fact much more diversified. If intra and intermolecular secondary bonds and electron lone pairs are considered ψ-trigonal bipyramidal, ψ-octahedral, ψ-pentagonal bipyramidal and some others coordination geometries can be identified. A careful reexamination of a number of published structures is presented, with the analysis of the coordination polyhedra.

Key concepts: Trigonal bipyramidal molecular geometry, Pentagonal bipyramidal molecular geometry, Lone pair, Polyhedron, Octahedron, Bipyramid, Crystallography, Coordination number

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