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Alvarez, Rodolfo Rangel; Cabrera, Armando; Espinosa‐Pérez, Georgina; Hernández‐Ortega, Simón; Velasco, Luis; Esquivel, Baldomero

doi:10.1023/a:1013900617719

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…There are only four previous structurally characterized acyl- or alkoxycarbonyl cobalt species with planar tetradentate Schiff base ligands related to those used here, all of which were pentacoordinate complexes with square-pyramidal geometry. ,− The effect of five- versus six-coordinate geometry appears to be minimal, with no major changes to the metrics of the complexes. Of particular note, the measured Co–C bond lengths are all within 0.03 Å of each other (1.878–1.906 Å), and the bond lengths reported here also lie within this range.…”

Section: Resultsmentioning

confidence: 96%

Synthesis and Characterization of Alkoxycarbonyl Cobalt Complexes via Direct Carbonylation Methods

2017

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A series of alkoxycarbonyl cobalt(III) complexes has been prepared by carbonylation of the corresponding aliphatic alcohols. This reaction proceeds under mild conditions compatible with a wide range of functionalized alcohols, including alkenes, alkynes, arenes, halides, protected alcohols and amines. Two different protocols employing both Co(II) and Co(III) complexes as precursors have been developed and proceed with high efficiency for ligands such as salen and salophen. An unexpected transesterification was observed to interconvert alkoxycarbonyl products under acid catalysis. Characterization data, including NMR, IR, and mass spectrometry for all complexes and two X-ray structures, are provided.

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