【摘要】 报道了配合物 [Co (tren) (DL phenylalaninato) ] (ClO4 ) 2 (Ⅰ )、Co (tren) (L prolinato) ]I2 ·H2 O (Ⅱ )、[Co (tren) (L valinato) ]I2 ·1 / 3H2 O (Ⅲ )、[Co (tren) (L isoleucinato) ]I2 (Ⅳ )、[Co (tren) (L leucinato) ]I2 (Ⅴ )在溶液中的NMR研究 .通过同核和异核二维核磁共振实验归属了配合物的1H和13CNMR ,发现在配合物的空间结构中 ,四齿配体 (tren)的 3个螯合臂中有两个构象稳定 ,而另一个构象不稳定 ,这与晶体学数据吻合 .通过变温实验和溶剂效应实验 ,发现在配合物Ⅲ、Ⅳ、Ⅴ中存在分子内氢键 ,而在晶体结构中 ,所有配合物都存在分子间氢键 .配合物Ⅰ、Ⅱ在溶液中的行为需进一步的研究更多还原

【Abstract】 NMR experiments at various temperature or with different solvents were used to characterize the nature of hydrogen bonds and conformation of several complexes in solution, namely the trans(N,t N) isomer of [Co(tren)(DL phenylalaninato)](ClO\-4)\-2(Ⅰ), Co(tren)(L pro linato)]I\-2·H\-2O(Ⅱ), I\-2·H\-2O(Ⅱ), [Co(tren)(L valinato)]I\-2·1/3H\-2O(Ⅲ), Co(tren)(L isoleucinato)]I\-2(Ⅳ), I\-2(Ⅳ), [Co(tren)(L leucinato)]I\-2(Ⅴ). Compared with their crystal structures in which intermolecular double or single hydrogen bonds were observed. Intramolecular double or single hydrogen bonds formed by the carbonyl oxygen of the amino acidato ligand and the amino hydrogen of the tren ligand were observed in Ⅲ, Ⅳ, Ⅴ. While the situations in Ⅰ and Ⅱ need more investigations. The \{\}\+1H and \{\}\+\{13\}C NMR assignments were achieved by 2D NMR(COSY and HMQC ).更多还原