Synthesis And Characterization Of New Bis(1,2,4-diazaphosphol) Methane Compounds And Copper And Cobalt Complexes

Bispyrazolylmethanes were a kind of Neutral Bidentateligands.Because of the nitrogen atoms,they have good coordinationeffect. Complexes which have new structural could be formed whentheligands reacted with some main group elements or transitionmet-als.For the different substituent group of thebis（pyrazol-1-yl）methanes,they were conveniently synthesized andhad excellent coor-dination property Bispyrazolylmethanes ligandswould be wildly used in polymer materials, catalytic materials,biomaterials and optical materials. Especially, copper complexesbinding with bis（pyrazol-1-yl）methanes were discovered that couldinhibit activity, which leads to cell death, had the potential medicalvalue.Compared with bis（pyrazol-1-yl）methanes ligands,3,5–disubsti-tuents-1,2,4-diazaphosphole ligands containing both N and P het-eroatoms, which coordination ability and mode were different, for-med sp²hybrid orbitals.So studying the compounds that has goodselectivity and strong fluorescence is necessary. Based on theabove two key points, bis（1,2,4-diazaphospholyl） methanes wereconveniently synthsized. Contents as follows: Fristly, Bis（1,2,4-diazaphospholyl）methane [H（L1）,i-Pr（L2）,t-Bu（L3-3）,Ph（L4）] were synthesized through the Phase Trans-fer Catalysi-s reaction with3,5-disubstituents-1,2,4-diazaphos-phol ligands （1,2,3,4） and dichloromethane.The novel ligands binded characteristicsof Bis（pyrazolyl）methanes and3,5-disubstituents-1,2,4-diazaphosp-hole ligands,so their coordina-tion ability would be excellent. Theabove new ligands were characterized by mp, TLC, NMR and X-Ray single crystal diff-raction.Secondly, bis（1,2,4-diazaphospholyl）methane （L1） was used to re-act with Cu（ClO₄）₂·6H₂O, Zn（ClO₄）₂·6H₂O, CuCl₂·2H₂O, ZnCl₂,CoCl₂·6H₂O in methanol respectively. The obtained complexes were char-acterized by mp, lectron paramagneticresonance spectrum, NMRspectrum and X-Ray single cryst-al diffraction. Through the analy-sis of magnetic data,[Cu（L1）Cl₂· H₂O] was the antiferromagnetismcomplex,and [Cu（L1）₂·（H₂O）₂]（ClO₄）₂was the paramagnetic complex.The two complexes could be used as magnetic materials.