Decomposition Behavior of M(DPM)n (DPM = 2,2,6,6-Tetramethyl-3,5-heptanedionato; n = 2, 3, 4)

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• 作者：Yinzhu Jiang ; Mingfei Liu ; Yanyan Wang ; Haizheng Song ; Jianfeng Gao ; Guangyao Meng
• 刊名：Journal of Physical Chemistry A
• 出版年：2006
• 出版时间：December 21, 2006
• 年：2006
• 卷：110
• 期：50
• 页码：13479 - 13486
• 全文大小：204K
• 年卷期：v.110,no.50(December 21, 2006)
• ISSN：1520-5215

文摘

The decomposition behavior of M(DPM)_n (DPM = 2,2,6,6-tetramethyl-3,5-heptanedionato; M = Sr, Ba, Cu,Sm, Y, Gd, La, Pr, Fe, Co, Cr, Mn, Ce, Zr; n = 2-4) was studied in detail with infrared spectroscopy andmass spectrometry. The results indicated that the chemical bonds in these compounds dissociate generallyfollowing the sequence of C-O > M-O > C-C(CH₃)₃ > C-C and C-H at elevated temperatures. Thedecomposition processes of M(DPM)_n are strongly influenced by the coordination number and central metalion radius. In addition, the decomposed products, in air atmosphere, varied from metal oxides to metalcarbonates associated with different M(DPM)_n.