Electron spin resonance spectra of Manganese(II) ions in cis-Mg(diketone)2L2 environments

✍ Scribed by Roshun B. Birdy; Margaret Goodgame

• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 302 KB
• Volume: 34
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)94713-3

✦ Synopsis

At the simplest level, the zero-field splitting for (II) ions doped into cis-Mg(dibenzoylmethane)2a trans-complex is expected to be double that for an (dimethylformamide)2 and Mg(hexafluoroacetylanalogous cis-complex and opposite in sign. However, acetone)z(H20)3, and zero field splitting parameters a recent single-crystal e.p.r. study [I] of trans-Mg-D and X (= E/D) are den'ved. In each case D is nega-(Mn)(acac)2(H20)2 showed the D-tensor to be tive, and considerably smaller than in trans-Mg(acetyl-strongly rhombic, and it is clear that simplistic interacetone)Z(H20)Z. The rhombicity is also lower in pretations are of no value. Moreover, with powder the cis-complexes, and it seems that a 'stereochemical spectra it is not always possible to determine the sign criterion based on these parameters may be possible.

of the splitting.