Accession Number:

AD0744960

Title:

Four- and Six-Coordinate Cobalt(II) Dioctylphosphinate.

Descriptive Note:

Technical rept.,

Corporate Author:

PENNWALT CORP KING OF PRUSSIA PA RESEARCH AND DEVELOPMENT DEPT

Personal Author(s):

• Gillman,Hyman D.

Report Date:

1972-06-01

Pagination or Media Count:

16.0

Abstract:

A new form of cobaltII dioctylphosphinate form II was prepared by the reaction of cobaltII chloride with dioctylphosphinic acid in absolute ethanol. Visible and near infrared spectra indicate that form II contains octahedrally coordinated cobaltII, whereas the previously reported form form I contains tetrahedrally coordinated cobaltII. 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 polymetal phosphinate which exists both in four- and six-coordinate forms. Author

Descriptors:

• (*COBALT COMPOUNDS
• COMPLEX COMPOUNDS)
• (*ORGANIC PHOSPHORUS COMPOUNDS
• COMPLEX COMPOUNDS)
• (*INORGANIC POLYMERS
• *COMPLEX COMPOUNDS)
• CHEMICAL BONDS
• MOLECULAR STRUCTURE
• SYNTHESIS(CHEMISTRY)
• ULTRAVIOLET SPECTRA
• VISIBLE SPECTRA
• INFRARED SPECTRA

Subject Categories:

• Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE