Molybdenum and tungsten complexes with carbon dioxide and ethylene ligands.

ABSTRACT: The first examples of stable metal complexes with coordinated ethylene and carbon dioxide ligands are reported. Reaction of tris(ethylene) complexes mer-M(C₂H₄)₃(PNP) (M = Mo and W; PNP = 2,6-bis(diphenylphosphinomethyl)pyridine) with CO₂ yields the corresponding, mixed cis-M(C₂H₄)₂(CO₂)(PNP) derivatives. X-ray studies reveal six-coordinate structures exhibiting η²-ethylene and κ²-C,O carbon dioxide coordination. Remarkably, the formation of the molybdenum CO₂ adduct occurs also in the solid state at room temperature, under 4 bar of CO₂, in a nearly quantitative manner.

SUBMITTER: Alvarez M 

PROVIDER: S-EPMC7006629 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature