双吡唑膦硼钾配体及其镍、铜、钴配合物的合成研究

发布时间：2018-07-25 07:25

【摘要】：吡唑硼配体是一种阴性的配体，它含有氮原子，具有很好的配位能力，可以跟一些主族元素或者过渡金属反应形成一些具有新颖结构的配合物。吡唑硼配体具有化学结构新颖,变化多样,功能齐全等特征,它已成为当前金属有机化学领域中的前沿课题和研究的热点。与吡唑类配体相比，吡唑膦类配体的配位性更强。吡唑膦类配体中同时含有N和P两种配位能力不同的原子，且它们都采取sp2杂化成键方式，都有一对孤对电子，使其配位能力更强，能与周期表中的大部分金属以不同的配位方式结合，形成结构多样的配合物。基于以上特性，我们决定合成双吡唑膦硼钾配体，双吡唑膦甲烷配体，并合成一系列配合物。本文将进行以下研究与探讨： 1.合成双(1,2,4-二唑膦)硼钾配体 1,2,4-二唑膦与硼氢化钾作为原料，用甲苯作为溶剂，，按摩尔比为2:1进行反应，合成一种新的阴性双齿配体，即双(1,2,4-二唑膦)硼钾配体。研究其合成方法,将所得产物用熔点，核磁，红外，X射线单晶衍射等分析方法进行表征，得到其单晶结构; 2.双(1,2,4-二唑膦)硼钾盐与镍配合物的合成研究将新合成的双(1,2,4-二唑膦)硼钾配体与溴化镍按摩尔比为2:1进行反应，最后得到的配合物用红外，熔点，顺磁共振，X射线单晶衍射等分析方法进行表征，最后得出该配合物具有顺磁性; 3.双(1,2,4-二唑膦)甲烷与镍配合物的合成研究 1,2,4-二唑膦与二氯甲烷作为原料合成双(1,2,4-二唑膦)甲烷，并将其与溴化镍按摩尔比为2:1进行反应，将所得产物用红外，熔点，核磁，X射线单晶衍射等分析方法进行表征，我们得出该配合物具有反铁磁性。
[Abstract]:Pyrazole boron ligands are negative ligands. They contain nitrogen atoms and have good coordination ability. They can react with some host elements or transition metals to form some novel complexes. Pyrazolium boron ligands are characterized by novel chemical structure, diverse changes and complete functions. It has become a hot topic in the field of organometallic chemistry. Compared with pyrazole ligands, pyrazole phosphine ligands have stronger coordination properties. Pyrazophosphonium ligands contain atoms with different coordination capacities of N and P, and both of them are bonded by sp2 heterogeneity, and each has a pair of solitary pairs of electrons, which make their coordination ability stronger. It can bind with most metals in the periodic table in different coordination ways to form complex with various structures. Based on the above characteristics, we have decided to synthesize bispyrazophosphonium boron potassium ligands and bispyrazophosphone-methane ligands, and to synthesize a series of complexes. This article will carry on the following research and discussion: 1. A new negative didentate ligand, Bis (1H 2H 2N 4 diazophosphonium) boron potassium ligand, was synthesized by reaction with potassium borohydride with toluene as solvent and massage at 2:1, and a new negative ligand, Bis (1H 2H 2N 4 diazophosphonium) boron potassium ligands, was synthesized. The synthesis method was studied. The products were characterized by melting point, nuclear magnetic field, infrared X-ray single crystal diffraction and so on, and the single crystal structure was obtained. 2. Study on the Synthesis of Bis (1H _ 2N _ 4-Diazophosphonium) Boropotassium Salts and Nickel complexes; reaction of the newly synthesized Bis (1H _ 2N _ 4-Diazophosphonium) Boron potassium Ligand with Nickel bromide at 2:1 molar ratio, the resulting complexes were synthesized by IR, melting point, Paramagnetic resonance X-ray single crystal diffraction and other analysis methods were used to characterize the complex. Finally, it was found that the complex had paramagnetic properties. Study on the Synthesis of Bis (1H 2H 2N 4 Diazophosphonium) methane and Nickel complex; the synthesis of bis (1h2h2zophosphonium diazophosphine) methane with dichloromethane as raw material and the reaction with nickel bromide at 2:1 in molar ratio, the products were obtained by IR, melting point, The complex was characterized by NMR X-ray single crystal diffraction and we found that the complex has anti-ferromagnetism.
【学位授予单位】：山西师范大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：R914

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