Polymer-Metal Complexes(II). Catalytic Activity of Some Ni(II)-Polyethyleneimine Complexes

고분자-금속착물 (제2보). 몇가지 Ni(II)-Polyethyleneimine 착물의 촉매활성도

  • Jung Hag Park (Department of Chemistry, yeungnam University) ;
  • Tae Sub Cho (Department of Chemistry, yeungnam University)
  • 박정학 (嶺南大學校 理科大學 化學科) ;
  • 조태섭 (嶺南大學校 理科大學 化學科)
  • Published : 1981.12.30

Abstract

Two types of Ni(II)-polyethyleneimine (PEI) complexes, [Ni(PEI)]$Cl_2$ and [Ni(P-EI)$Cl_2$] were synthesized and their catalytic activities in the decomposition reaction of hydrogen peroxide were investigated. For the purpose of comparison, the corresponding monomeric complexes, $[Ni(en)_3]Cl_2$ and $[Ni(en)_2Cl_2$ were also prepared; it was observed that their activities increase in the following order; $0{\approx}[Ni(en)_3]Cl_2{\le}[Ni(en)_2Cl_2]<[Ni(PEI)]Cl_2<[Ni(PEI)Cl_2]$ On the basis of structural analysis by means of visible and infrared spectroscopy, the catalytic activiy of these Ni(II)-PEI complexes is assumed to depend on the bond strength between the ligand and the nickel ion.

두 가지의 팔면체형 Ni(II)-polyethyleneimine (PEI) 착물, [Ni(PEI)]$Cl_2$ 및 [Ni(PEI)$Cl_2$]를 합성하여 과산화수소 분해반응에서 이들 착물의 촉매활성도를 조사하고, 유사한 구조를 한 ethylenediamine 착물, $[Ni(en)_3]Cl_2$$[Ni(en)_2Cl_2$의 촉매활성도와 비교해 본 결과, 다음과 같은 순서로 촉매 활성도가 증가함이 관찰되었다 : $0{\approx}[Ni(en)_3]Cl_2{\le}[Ni(en)_2Cl_2]<[Ni(PEI)]Cl_2<[Ni(PEI)Cl_2]$ 가시선 및 적외선 흡수 스펙트럼을 측정하여 두 가지 Ni(II)-PEI 착물의 구조를 조사하여 본 결과 이들 착물의 촉매활성도는 배위자와 Ni(II)이온사이의 결합세기에 의존함을 알 수 있었다.

Keywords

References

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