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- Title
Diferrocenylmercury‐Bridged Diphosphine: A Chiral, Ambiphilic, and Redox‐Active Bidentate Ligand.
- Authors
Tagne Kuate, Alain C.; Lalancette, Roger A.; Bannenberg, Thomas; Jäkle, Frieder
- Abstract
Abstract: A diphosphine chelate ligand with a wide and flexible bite angle, a unique stereochemical environment, and redox‐active and ambiphilic character is reported. Initially generated as its HgCl2 complex by reaction of 1,2‐fc(PPh2)(SnMe3) (fc=ferrocenediyl) with HgCl2 in acetone, treatment with [n‐Bu4N]CN readily liberates the free chiral bidentate ligand. An intermolecular ClHg−Cl→Hgfc2 (2.9929(13) Å) interaction that is unprecedented in ambiphilic ligand chemistry is seen in the solid structure of Hg(fcPPh2)2⋅HgCl2 where the bridging mercury atom acts as a σ‐acceptor. Furthermore, a bis‐[Rh(COD)Cl] complex is introduced, which displays relatively short Rh⋅⋅⋅Hg contacts of 3.4765(5) and 3.4013(1) Å. Wiberg indices of 0.12 are determined for these Rh⋅⋅⋅Hg interactions and an AIM analysis reveals bond paths with an electron density ρ(r) of 1.2×10−2 and 1.4×10−2 e/a03 at the bond critical points.
- Subjects
DIPHOSPHINE; CHIRALITY; LIGANDS (Chemistry); STEREOCHEMISTRY; COMPLEX compounds; CRYSTAL structure
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 22, p6662
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201803086