Methanesulfonato complexes of cobalt, nickel, and copper

✍ Scribed by N.O. Johnson; J.T. Turk; W.E. Bull; H.G. Mayfield Jr.

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 464 KB
• Volume: 25
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)95720-7

✦ Synopsis

Cobalt(U), nickelfll), and copper complexes of the general formula [ML,(CH3S03)2] are reported (L = pyridine and 4-methylpyridine). Also prepared was [CO(~~)~(CH~SOJ~ 1. Infrared and electronic spectra and magnetic susceptibility measurements indicate that all are high-spin tetragonally distorted octahedral complexes. Upon evaluation of crystal field parameters, Ds and Dt, it was found that the methanesulfonate anion coordinates more strongly than perchlorate and tetrajluoroborate, but less strongly than chloride and bromide.

metal carbonate (Baker) was treated with methanesulfonic acid (Eastman). After filtration to remove unreacted carbonate, the solution was evaporated until crystals formed. The hydrated salts were dried at 78 "C for several days. Pyridine (py) was used as received from Fisher Scientific Co. 4-Methylpyridine (4-mepy) was supplied by Eastman Organic Chemicals and was distilled once (b.p. 143-5 "C). Practical grade 2,2-dimethoxypropane (Eastman), methanol and diethyl ether (Fisher) were used as received.