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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 30, Number 6
JKCSEZ 30(6)
December 20, 1986 

 
Title
The Study on the Reactivity of Dioxygen Bridged Palladium Complexes Having π-Allyl Ligands

π-알릴리간드를 갖는 산소가교 팔라듐착화합물의 반응성에 관한 연구
Author
Pyeong Jin Chung

정평진
Keywords
Abstract
본 연구는 π-알릴리간드를 갖는 산소가교 팔라듐착화합물의 반응성에 관한 것이다. 이 경우에 합성한 산소가교화합물은 산소원으로서 초과산화이온(O2-)을 사용했다. 합성한 산소가교 팔라듐착화합물의 형태를 검토하기 위하여 벤젠 용매중에서 물, 메탄올 및 아세트산과의 반응을 행하였다. 그 결과 산소가교 팔라듐착화합물은 이들과 반응하여 각각 과산화수소(H2O2)를 발생하면서 히드록시, 메톡시 및 아세톡시가교 팔라듐착화합물로 변환되었다. 또한 산소가교 팔라듐착화합물은 치환페놀류인 살리실알데히드, 8-히드록시퀴놀린 및 활성메틸렌화합물인 아세틸아세톤, 디메틸말론산과도 반응하여 과산화수소와 단핵팔라듐착화합물을 생성했다. 이것은 착화합물중의 배위산소가 과산화이온(O22-)이며, 강한 염기로서 작용하고 있음을 시사한다.

This study is related to reactivity of dioxygen bridged palladium complexes having π-allyl ligands. In this case, new dioxygen bridged palladium complexes were prepared using superoxide ion(O2-) as an oxygen source. Reactions of the dioxygen palladium complexes prepared in the study were examined in order to clarify the nature of the coordinated dioxygen. Treatments of a solution of the dioxygen bridged palladium complexes in benzene by water, methanol and acetic acid gave hydrogen peroxide (H2O2) as hydroxy-, methoxy-, and acetoxybridged palladium complexes, respectively. The dioxygen bridged palladium complexes reacted also with substitution phenols of salicylaldehyde, 8-hydroxyquinoline and active methylenes of acetylacetone, dimethyl malonate to afford mononuclear complexes of palladium and hydrogen peroxide. The results suggest that dioxygen is coordinated as peroxo (O22-) in the complexes and behaves as a strong base.

Page
516 - 520
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