A Facile Synthetic Route to a Family of Mn^III Monomers and Their Structural, Magnetic and Spectroscopic Studies

详细信息    查看全文

• 作者：Edel Houton ; Brian Kelly ; Sergio Sanz ; Eric J. L. McInnes ; David Collison ; Euan K. Brechin ; Anne-Laure Barra ; Alan G. Ryder and Leigh F. Jones
• 刊名：European Journal of Inorganic Chemistry
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：2016
• 期：32
• 页码：5123-5131
• 全文大小：2228K
• ISSN：1099-0682c

文摘

We report a rapid and facile route to the synthesis of a family of Mn^III monomers of general formula [Mn^IIIF₃(H₂O)(L^1–6)]·xH₂O·yMeOH [L¹ = 2,2′-bipyridyl, x = 2, y = 0 (1′); L² = 1,10′-phenanthroline, x = y = 0 (2′); L³ = 6-methyl-2,2′-dipyridyl, x = y = 0 (3), L⁴ = 4,4-dimethyl-2,2′-dipyridyl, x = 2, y = 0 (4), L⁵ = 5,5′-dimethyl-2,2′-dipyridyl, x = 0, y = 0.5 (5); L⁶ = 5-chloro-1,10-phenanthroline, x = y = 0 (6)]. Magnetic susceptibility and magnetisation experiments have been employed to elucidate the D tensor for each family member (ranging from –3.01 cm^–1 in 2′ to –4.02 cm^–1 in 5), while multi-frequency/high-field EPR spectroscopic measurements and subsequent simulations gave similar values for complexes 1′ (–4.25 cm^–1), 2′ (–4.03 cm^–1), 4 (–3.90 cm^–1) and 5 (–4.04 cm^–1). The terminal Mn–F vibrational stretches in 1′–6 have been probed using Raman spectroscopy.