An NMR investigation of 1,2-metallotropic shifts in transition metal complexes of benzo[c]cinnoline and pyridazines
作者:Edward W. Abel、Elizabeth S. Blackwall、Keith G. Orrell、Vladimir Šik
DOI:10.1016/0022-328x(94)87270-8
日期:1994.1
shifts, which have been quantitatively studied by 1D bandshape analysis and 2D-EXSY NMR experiments. Energy barriers for the metallotropic shifts in the pyridazine complexes are ca. 20 kJ mol−1 higher than in the benzo[c]cinnoline complexes. These differences are discussed in terms of the ground state and likely transition state species for this fluxional process.
[W(CO)5 L],[顺式-Rh(CO)2 C1L](L苯并[ c ]肉桂酸]和[W(CO)5 L'](L'哒嗪,3-甲基哒嗪)的配合物,和4-甲基哒嗪)已经合成并显示在有机溶剂中显示出分子内金属氮1、2-通量位移,这已经通过一维带状分析和2D-EXSY NMR实验进行了定量研究。在哒嗪复合物metallotropic转变能垒CA。比苯并[ c ]肉桂酸络合物高20 kJ mol -1。这些差异将在基态和可能的过渡态物种方面进行讨论。