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Crystal Structure and Character Ization of 4-4’-Diacylpyrazol-5-One and Their Complexes

Author: LiJing
Tutor: LiJinZhou
School: Harbin Normal University
Course: Inorganic Chemistry
Keywords: Acyl pyrazolone dimeric Complexes Characterization Crystal structure
CLC: O633.5
Type: Master's thesis
Year: 2009
Downloads: 16
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Abstract


In this paper, the metal ions Ni 2 Cu 2 , Mn 2 with 1 - phenyl - 3 - methyl-4 - ( of α- furan carbamoyl) - pyrazol- morpholinone -5 (HPMαFP) reaction , catalytic synthesis of acyl pyrazole morpholinone bis oligomer (HPMαFP-Dimer) and Crystal , in the reaction mother liquor after the separation of unexpected inverse catalytic reaction product , Ni 2 , Cu 2 , Mn 2 with PMαFP- metal complexes and crystal [ M ( PMαFP , ) 2 (C2H5OH ) 2 ] . Synthesized a new Schiff base HPMαFP condensing α-naphthylamine (HL2) crystals . By elemental analysis, infrared spectroscopy , electron spectroscopy , fluorescence spectroscopy , thermal analysis , electrochemical analysis , X - ray single crystal diffraction characterization methods to determine the composition of the above-mentioned compounds , its structure and the nature of the research . Studies show mechanism HPMαFP dimeric and depolymerization : the HPMαFP ketone structure pyrazolone ring 4 H , by the adjacent double carbonyl electron withdrawing effect of significantly acidic in the light heated and of Ni , 2 < / SUP >, Cu 2 , Mn 2 prone to dissociation under the conditions of coexistence , homolytic leaving to generate 4 C radicals combined , the collision can be formed HPMαFP- dimer dimer ligand . After separation, the mother liquor is an excess of nickel , copper metal ion prompted dimeric reaction reverse dimeric ligand dissociation and complexes precipitated with the metal ions to form acyl pyrazolone . Thus the transition metal ions Ni 2 , Cu 2 , Mn 2 , etc. with a double- poly and depolymerization catalysis . The Ni (PMαFP) 2 · (C2H5OH) 2 crystals are monoclinic system , space group Pbca, with lattice parameters a = 15.2269 ( 14 ) A , b = 9.3399 ( 9 ) A , c = 22.794 ( 2) A . Mn (PMαFP) 2 · (C2H5OH) 2 crystals belong to the triclinic space group P-1, with lattice parameters a = 8.6188 ( 3 ) A , b = 16.8089 ( 6) A , c = 17.7742 ( 6 ) A. The two complexes are octahedral structure is stable . The Schiff base HL2 crystal to the monoclinic system , space group P2 ( 1 ) / c , with lattice parameters a = 9.8484 ( 10 ) A , b = 17.5071 ( 18 ) A , c = 12.1549 ( 13 ) A , α = 90o, β = 108.836 (2) o, γ = 90o. The compound is a bidentate ligand structure analysis indicated compound to enaminoketone structure exists .

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Miscellaneous Chain Polymers > Heterocyclic polymer chain (chain polymer containing heterocyclic )
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