二正丁基锡三齿酰腙Schiff碱配合物的合成和红外光谱研究

合成了 4种三齿酰腙Schiff碱配体H2 L H2 L1 :C6 H5C(O)NHN =CHC6 H4OH 2 ,H2 L2 :C6 H5C(O)NHN =CHC6 H3(OH) 2 2 ,4,H2 L3:NC5H4C(O)NHN =CHC6 H4OH 2 ,H2 L4:NC5H4C(O)NHN =CHC6 H3(OH) 2 2 ,4]和它们的二正丁基锡新型配合物 (n Bu) 2 SnL ,通过元素分析确定了这些配合物的组成 ,并对配合物在 4 0 0 0～ 40 0cm- 1范围内的主要红外光谱吸收峰进行了归属和讨论 ,推测出配合物可能的分子结构。

Di-n-Butytin Tridentate Acylhydrazone Schiff Base Complexes: Synthesis and Studies by Infrared Spectroscopy

Four tridentate acylhydrazone schiff base ligands H 2L H 2L1: C 6H 5C(O)NHN=CHC 6H 4OH-2, H 2L2: C 6H 5C(O)NHN=CHC 6H 3(OH) 2-2,4, H 2L3: NC 5H 4C(O)NHN=CHC 6H 4OH-2, H 2L4: NC 5H 4C(O)NHN=CHC 6H 3(OH) 2-2,4] were synthesized and use to form four novel di-n-Butytin complexes of the type (n-Bu) 2SnL with di-n-Butytin oxide (n-Bu) 2SnO]. All these ligands and complexes were characterized by elemental analysis and infrared spectroscopy. Their principal infrared spectral absorption peaks were assigned and discussed for the region of 4 000-400 cm -1. A comparison of the infrared spectra of the ligands with those of the corresponding complexes reveals that the disappearance of the bands assigned to carbonyl unambiguously confirms that the ligands coordinate with tin in the enol form. The coordination manner for tridentate acylhydrazone schiff base ligands with tin atom in the complexes was determined. The results indicated that the Sn atom in these complexes is five-coordinated.