Four- and Six-Coordinate Cobalt(II) Dioctylphosphinate.
Abstract
A new form of cobalt(II) dioctylphosphinate (form II) was prepared by the reaction of cobalt(II) chloride with dioctylphosphinic acid in absolute ethanol. Visible and near infrared spectra indicate that form II contains octahedrally coordinated cobalt(II), whereas the previously reported form (form I) contains tetrahedrally coordinated cobalt(II). Form II is irreversibly converted to form I by heating above 68C or by dissolving it in nonpolar solvents. Infrared spectra, X-ray powder patterns, and DSC thermograms for both forms are presented and compared. This appears to be the first example of a poly(metal phosphinate) which exists both in four- and six-coordinate forms. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1972
- Accession Number
- AD0744960
Entities
People
- Hyman D. Gillman