N_2O_2 및 N_3O_2형 거대고리 리간드와 Mo(Ⅵ) 착물생성에 관한 연구 = The Formation of Mo(Ⅳ) Complexes with Macrocyclic Ligands of N_3O_2 and N_2O_2 Ring

다국어 초록 (Multilingual Abstract)

The macrocyclic ligands with N_3O_2 and N_2O_2 ring were synthesized from 2-hydroxybenzaldehyde, 1, 2-dibromoethane, 2-2´-diethylenetriamine and tthylenediamine.
It was investigated that the determination of characteristics of structures, complex structure changed by thermal decomposition, and determination of mole ratios of complexes synthesized from these ligands and Mo(Ⅳ) ion in DMF solution by the contineous variation method of ultraviolet spectrophotometry. ir-spectrophotometry, thermal and element analysis.
The complexes of MoOC_20H_27N_3O_2 is not soluble in water, but sparingly soluble in ethanol, methanol and acetone, And this complex in nonpolar macromolecule, which has the formulas of MoOC_20H_27N_3O_2 and MoO_3. The transition temperatures of phase change were 226℃, 615℃, and 800℃ in air, respectively.
Those complexes have structures of hexa-coordinated system, and mole ratios of molybdenium(Ⅳ) metallic ion to ligands are 1 : 1.
The complex of Mo(Ⅳ) with macrocyclic ligand of N_3O_2 ring shows increasing phenomenon of spectrophotometric intensity in proportion to N_3O_2 owing to the abolity cooordinated with H_2O coming out of Mo(Ⅳ) ion.
The complexes of Mo(Ⅳ) with macrocyclic of N_3O_2 and N_2O_2 have the structures with equal composition ratio in the state of solid and solution.