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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 43, Number 3
JKCSEZ 43(3)
June 20, 1999

Title	Chemical Equilibria of Lanthanides{Ln(III)=Pr, Sm, Gd, Dy}-Macrocyclic Complexes with Monodentate Ligands in CH₃OH(Part I) CH₃OH 용매에서 란탄족 원소 {Ln(III)=Pr, Sm, Gd, Dy}-거대고리 착물과 한자리 리간드 간의 화학평형
Author	Jong Chul Byun, Yu Chul Park, Shin Bok Park 반종철, 박유철, 박신복
Keywords
Abstract	2,6-diformyl-p-creso1(DFPC)로부터 합성한 Ln-거대고리([20]DOTA) 착물, [Ln([20]DOTA)(NO3)(H2O)](NO3)2 xH2O{Ln(III)=Pr, Sm, Gd, Dy}를methanol용매에 2일정도 정치함으로써 [Ln([20]DOTA)(NO3)(CH3OH)]2+을 얻을 수 있다. 이 lanthanide-거대고리 착물에서 배위된 CH3OH이 주게원자가 N인 보조리간드,La(=한자리 리간드;pyidine, imidazole, triethylamine, diethylamine, piperidine)에 의해 치환될 때 평형상수(K)를 25 oC, ㅒ=0.1M에서 분광학적 방법으로 결정하였다. 보조리간드의 pKa는 pyridine < imidazole < triethy1-amine
Page	257 - 263
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