Tridentate ligands 2-hydroxyphenylsalicylaldimine (SAPH2), 2-hydroxyphenyl-2-hydroxy-1-naphtalaldimine (NAPH2) and Ni(II) complexes with multidentate ligand Bis-N·N′-(salicylidene)-1,3-propanediamine (LH2) as well as mononuclear complex of Cu(II) were prepared using the same multidentate ligand. Diethylamine (Et2NH), NH3 and H2O monodentate ligands were bound to these complexes coordinatively. The heat absorbed at the temperatures where these ligands thermally dissociated from the complexes were measured using the TG and DSC methods. It is assumed that the states both of the complexes with and without the monodentate ligands are solid and coordination bond energy for the monodentate ligand is calculated. It is seen that these calculated coordination bond energies are comparable with hydrogen bond energies.
以三齿
配体2-羟基苯基
水杨醛亚胺(
SAPH2)、2-羟基苯基-2-羟基-1-
萘醛
亚胺(NAPH2)以及多齿
配体双-N·N′-(
水杨醛)-
1,3-丙二胺(LH2)与Ni(II)的配合物和单核Cu(II)配合物为研究对象,采用相同的
L2配体合成这些配合物,并将单齿
配体二乙胺(Et2NH)、NH3和
H2O以配位键形式与其键合。利用TG和
DSC方法测定
配体热分解脱除时的温度,并测得这些配合物在
配体热分解时的热效应。假定有单齿
配体和没有单齿
配体的配合物均为固态,计算了单齿
配体的配位键能,发现这些计算得到的配位键能与氢键键能相当。