Synthesis And Properties Of Iron,Cobaltand Nickel Schiff Base Complexes Supporting Of Trimethylphosphine

The activation of C-H bond as the "holy grail" of organic chemistry,attracts the favour of scientific workers.The target of C-H bond activation is the key to high inert C-H bond into a lower bond,and synthesis of the chemical bonds of want or functional groups.This is a key step of varieties of organic synthesis reaction and catalytic reaction,especially the synthesis of natural products and drugs.In the structure of organic compounds,all kinds of decoration and chemical reaction,in the final analysis is the activation and functionalization of C-H bond.Transition metal can achieve the activation of C-H bond in very mild conditions,and the metal complexe is of great significance in organic synthesis and catalytic reaction.Therefore,transition metal is one of the most effective means and ways to achieve C-H bond activation.At first,scientific workers concentrated in the precious metals,such as Ru,Rh.Pd,Ir,Pt and Os.but they are expensive and toxic,violated the concept of sustainable development and green chemistry.Therefore,the use of abundant,cheap easy,low toxicity and less pollution cheap metal such as Fe,Co and Ni instead of precious metals to implement C-H bond activation is very practical significance.PMe3 as a support ligands has small volume,strong coordination ability and characterization spectral characteristics is easy to wait for an advantage,widely used in scientific research and exploration.This dissertation mainly divided intco the following three parts:1.Synthesis and prcoperties of iron,cobalt and inickel benzyl amine schiff base complexes by C-H key activation.The 2-azaally cobalt and iron complexes 1-3 and 8-10 were obtained by the reaction of CoMe?PMe₃?₄ and Fe?PMe₃?₄ with L1-L3 by the activation of benzyl C?sp3?-H.Besides,CoMe?PMe₃?₄ can also be used to realize the activation of C'?sp3?-H bond in methylamine Schiff base L4.and obtain the 2-azaallyl cobalt complex-4.Co?PMe₃?₄ did not aclhieve the activaticon of the C-H bond in L1.which was obtained by the simplc ? coordination of zero valent cobalt complex 7 The reaction of Cocl?PMe3?3 and Ni?PMe₃?₄ with L1 has not been characterized.The reaction of 2-azaally cobalt complex 1 with methyl iodide was obtained the ionic complex of cobalt 5,complex 6 was obtained by the reaction of 1 with CO.The reaction of 2-azaally iron complex 8 with bromo ethane was obtained the complex 11,complex 12 was obtained by the reaction of 8 with CO.2.Synthesis and properties of iron,cobalt and nickel naphthyl amine schiff base complexes by C-H key activation.The complex 13 was obtained by the reaction of CoMe?PMe₃?₄ with L5 by the activation of C?sp2?-H.Co?PMe₃?₄ and Fe?PMe₃?₄ did not achieve the activation of the C-H bond in L5,which was obtained by the simple n coordination complex 16 and 17.The reaction of' CoCl?PMe?3 and Ni?PMe₃?₄ with L1 has not been characterized.The cobalt complex 13 was reacted with methyl iodide,and the cobalt iodine complex 14 wwas obtained by the addition of single electron oxidation.Complexes 13 and 17 reacted with CO to obtain carbonyl complexes 15 and 18.3.Synthesis and properties of iron,cobalt and nickel phenyl amine schiff base complexes by C-H key activation.The complex 19 was obtained by the reaction of CoMe?PMe₃?₄ with L6 by the activation of C?sp2?-H.Co?PMe₃?₄ did not achieve the activation of the C-H bond in L6.Which was obtained by the simplen coordination of zero valent cobalt complex 20.The mixture of complex 21 and 22 was obtained by the reaction of Fe?PMe₃?₄ with L6 by the activation of C?sp2?-H.The reaction of CoCl?PMe;?;and Ni?PMe₃?₄ with L1 has not been characterized.The mixture of complex 21 and 22 reacted with CO to obtain carbonyl complexes 23.In the dissertation,all the metal complexes have been characterized by a complete spectrum,and the structure of the complexes has been f-urther confirmed by X-Rav single crystal diffraction.