Thermochemical properties of the chelate complexes of some 3d-electron elements with 2,2,6,6-tetramethylheptane-3,5-dione. Part I. Complexes of Mn(II), Fe(II) and Co(II)
作者:E. Giera、W. Ka̧kołowicz
DOI:10.1016/0040-6031(85)87085-4
日期:1985.8
formation of Mn(II), Fe(II) and Co(II) complexes with 2,2,6,6-tetramethylheptane-3,5-dione (dipivaloylmethane, HDPM) were determined calorimetrically. The values of Δ H 0 f (M(DPM):(s) 298.15 K) (kJ mol −1 ) were found to be as follows: Mn(DPM) 2 , −(1325.7 ± 7.6); Fe(DPM) 2 , −(1252.0 ± 7.6); Co(DPM) 2 , −(1227.1 ± 7.6). The enthalpies for hypothetical processes of complex formation in the gaseous state were
摘要 Mn(II)、Fe(II) 和Co(II) 配合物与2,2,6,6-四甲基庚烷-3,5-二酮(二异丙基甲烷,HDPM)形成标准摩尔焓是通过量热法测定的。发现Δ H 0 f (M(DPM):(s) 298.15 K) (kJ mol -1 )的值如下:Mn(DPM) 2 ,-(1325.7 ± 7.6);Fe(DPM) 2 , -(1252.0 ± 7.6); Co(DPM) 2 ,-(1227.1 ± 7.6)。计算了气态复合物形成的假设过程的焓。测定了平均键离解能< D >(MO) 和平均坐标键离解能< D CB >(MO)。