N-Heterocyclic carbene complexes of rhodium: structure, stability and reactivity.

N-Heterocyclic carbene complexes of rhodium: structure, stability and reactivity.

Dalton transactions (Cambridge, England : 2003) (2008-08-09)

Jeremy M Praetorius, Cathleen M Crudden

ABSTRACT

The organometallic chemistry of N-heterocyclic carbene complexes of the transition metals has received significant attention over the past ten years, especially with respect to complexes of Pd and Ru. The present Perspective highlights the chemistry of NHC complexes of another important transition metal, Rh. The application of Rh-NHC complexes in the industrially significant reactions of hydrogenation and hydroformylation is described. In order to accurately assess the activity of these complexes, their stability must be carefully determined. Various synthetic routes to Rh-NHC complexes are also described.

MATERIALS

Product Number

Brand

Product Description

204218

Sigma-Aldrich

Rhodium, powder, 99.95% trace metals basis

GF81993910

Rhodium, foil, not light tested, 50x50mm, thickness 0.006mm, as rolled, 99.9%

GF35442727

Rhodium, foil, not light tested, 25x25mm, thickness 0.0005mm, permanent polyester support, 99.85%

GF37207166

Rhodium, wire reel, 0.1m, diameter 1.0mm, as drawn, 99.9%

GF71687357

Rhodium, microfoil, disks, 10mm, thinness 0.1μm, specific density 124μg/cm², permanent mylar 3.5μm support, 99.9%

GF49036204

Rhodium, foil, not light tested, 25x25mm, thickness 0.00075mm, permanent polyester support, 99.85%

GF06539979

Rhodium, wire reel, 0.1m, diameter 0.5mm, as drawn, 99.9%

GF72510364

Rhodium, wire reel, 0.5m, diameter 0.25mm, hard, 99.9%

GF40539405

Rhodium, foil, 25x25mm, thickness 0.1mm, as rolled, 99.9%

GF87742659

Rhodium, foil, not light tested, 25x25mm, thickness 0.001mm, permanent polyester support, 99.85%

GF49946417

Rhodium, microfoil, disks, 10mm, thinness 0.50μm, specific density 620μg/cm², permanent mylar 3.5μm support, 99.99%

GF36379345

Rhodium, foil, light tested, 15x15mm, thickness 0.05mm, as rolled, 99.9%

GF15499413

Rhodium, foil, not light tested, 25x25mm, thickness 0.006mm, as rolled, 99.9%

GF14938005

Rhodium, microfoil, disks, 25mm, thinness 0.1μm, specific density 124μg/cm², permanent mylar 3.5μm support, 99.9%

GF24911726

Rhodium, foil, not light tested, 25x25mm, thickness 0.012mm, as rolled, 99.9%

GF57675561

Rhodium, foil, light tested, 25x25mm, thickness 0.05mm, as rolled, 99.9%

GF82366342

Rhodium, foil, not light tested, 50x50mm, thickness 0.00025mm, permanent polyester support, 99.9%

GF64213680

Rhodium, wire reel, 0.05m, diameter 0.12mm, as drawn, 99.9%

GF12568013

Rhodium, foil, light tested, 25x25mm, thickness 0.05mm, as rolled, x-ray quality, 99.9%

GF45819995

Rhodium, wire reel, 0.05m, diameter 0.25mm, hard, 99.9%

GF44569907

Rhodium, foil, 25x25mm, thickness 0.125mm, as rolled, 99.9%

GF74452316

Rhodium, wire reel, 0.05m, diameter 0.5mm, as drawn, 99.9%

GF04978963

Rhodium, foil, not light tested, 10x10mm, thickness 0.012mm, as rolled, 99.9%

GF33789550

Rhodium, foil, not light tested, 50x50mm, thickness 0.001mm, permanent polyester support, 99.85%

GF80841146

Rhodium, foil, 25x25mm, thickness 0.15mm, as rolled, 99.9%

GF17514312

Rhodium, foil, not light tested, 25x25mm, thickness 0.00025mm, permanent polyester support, 99.9%

GF96356559

Rhodium, foil, light tested, 25x25mm, thickness 0.075mm, as rolled, 99.9%

GF22634120

Rhodium, foil, not light tested, 50x50mm, thickness 0.00075mm, permanent polyester support, 99.85%

GF17496973

Rhodium, wire reel, 0.2m, diameter 0.5mm, as drawn, 99.9%

GF83497652

Rhodium, wire reel, 0.05m, diameter 1.0mm, as drawn, 99.9%