http://dx.doi.org/10.1021/ic3021386">
 

Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Interaction of In(I) and Tl(I) cations with 2,6-diaryl pyridine ligands: Cation encapsulation within a very weakly interacting N/Arene host environment

Language

English

Abstract

The interaction of 2,6-dimesitylpyridine with Tl(I) and In(I) cations has been investigated with a view to developing tractable molecular M(I) compounds which are soluble in organic media. In stark contrast to isosteric and isoelectronic terphenyl systems, complexes featuring the [(2,6-Mes 2py)M]+ fragment feature very weak metal-ligand interactions in the solid state, as revealed by M-N distances of the order of 2.45 Å (M = In) and 2.64 Å (M = Tl). While additional weak φ interactions are observed with arene solvate molecules in these systems, the related 2:1 complex [(2,6-Mes2py)2In][BArf 4] features an In(I) center wholly encapsulated by the bulky Mes 2py donors, and even longer In-N distances [2.586(6) and 2.662(5) Å]. These contacts are about 0.5 Å greater than the sum of the respective covalent radii (2.13 Å) and provide evidence for an effectively "naked" In(I) cation stabilized to a minor extent by orbital interactions. © 2012 American Chemical Society.

Publication Date

2012

Source Publication Title

Inorganic Chemistry

Volume

51

Issue

23

Start Page

13017

End Page

13022

Publisher

American Chemical Society

ISSN (print)

00201669

ISSN (electronic)

1520510X

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