[311]. H. Zhang, B. Li, J. Sun, R. Clérac, E. V. Dikarev, “Fluorinated ß-Diketonates of the First Row Divalent Transition Metals: New Approach to the Synthesis of Unsolvated Species”, Inorg. Chem., (2008), 47, 21, 10046-10052 / 10.1021/ic801320p