Iron (Ⅱ) Complexes And Their Catalysis On Synthesis Of Cyclic Carbonate

In this thesis, the ligand PzCH2PyCH2Pz(L1)(Pz=Pyrazole, Py=Pridine) was synthesized and the ligand L1reacted with FeCl2and Fe(SCN)2respectively to afford the complex FeCl2L1(1) and Fe(SCN)2L1(3). The corresponding complex FeCl2L1DMF (2) and Fe(SCN)2L1DMF (4) was obtained by the diffusion of ethanol in a solution of1and3in DMF. All the compounds was determined by the IR, UV, NMR, MS, GC, X-ray diffraction and element analysis and the crystal of structure of complex2and4was obtained. The four complexes catalytic the reaction of synthesis cyclic carbonate at1atm and100℃for72h. The data demonstrate that the order of the catalytic activity of the four compounds is FeCl2L1DMF>Fe(SCN)2L1DMF>Fe(SCN)2L1>FeCl2L1and the catalytic actuvuty and the selective of the four complexes is well. The possible reaction mechanism was proposed in the thesis.The ligand BrCH3ImCH2PyCH2Pz (L2)(Im=Imidazole) and PzCH2CH2SCH2Py (L3) were synthesized. The ligand L2and L3reacted with FeI2(CO)4to afford the complexes [Fe(L)2]2+[Fel3(CO)3]-2. All the compounds was determined by the IR,’H NMR, X-ray diffraction and element analysis and the crystal of structure of complex [Fe(L1)2]2+[FeI3(CO)3]"2was obtained.