双（咪唑啉-2-亚胺）吡啶钯配合物的合成及其配位结构的研究

摘要

In this study, anovel bis( imidazolin-2-imino) pyridine palladium complex was synthesized. The traditional synthetic route of raw material was modified. The ligand was characterized by 1H NMR,it contained two strong electron donating N-heterocyclic carbine group, and the molecular structure of the palladium complex was determined by X- ray single crystal diffraction. X-ray single crystal diffraction of palladium( II) complex showed that palladium atom coordinated with three nitrogen atoms and chlorine atom drop out from metal atom. The angle between pyridine plane and imidazolin plane almost perpendicular, made the metal center surrounded by imidazolin group.%合成了一种未见报道的新型双(咪唑啉-2-亚胺)钯配合物，在合成过程中优化了传统的原料合成路线，得到的配体通过1 H NMR进行了表征，配体结构中含有两个具有强推电子效应的氮杂环卡宾，钯配合物的空间配位结构通过X-Ray单晶衍射分析确定。单晶分析结果显示，该配合物的金属中心与三个氮原子配位，原本与金属原子相连的氯原子从金属中心脱落，以配位的形式存在于配合物晶体的晶胞结构中，咪唑啉环所在平面与吡啶环平面呈接近九十度的夹角，使得咪唑啉环很好的包围了金属中心。