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Metal vapor synthesis as a straightforward route to group 10 homoleptic carbene complexes

journal contribution
posted on 2023-06-08, 06:34 authored by Polly L Arnold, Geoff Cloke, Tillman Geldbach, Peter B Hitchcock
The co-condensation of nickel, palladium, or platinum vapor with the N,N'-di-tert-butyl heterocyclic carbene 1,3-di-N-tert-butylimidazol-2-ylidene [C{N(But)OH}2] (L) provides a novel and straightforward synthesis of the stable, two-coordinate homoleptic metal carbene complexes NiL2 (1), PdL2 (2), and PtL2 (3). A single-crystal X-ray structural determination of 2 and 3 shows the two complexes to be isomorphous; in the solid state the metal center is linear and two-coordinate and the molecules approach D2d symmetry with a dihedral angle of 90° between the planar rings of the two ligand heterocycles. The metal center in 2 appears to be an essential mediator in the quantitative conversion of the ligated carbene into dihydroimidazoline, which is cleanly eliminated from a solution of the complex under an atmosphere of dihydrogen; 2 also reversibly coordinates ethene.

History

Publication status

  • Published

Journal

Organometallics

ISSN

02767333

Issue

16

Volume

18

Page range

3228-3233

Department affiliated with

  • Chemistry Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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