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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 12, Number 1
JKCSEZ 12(1)
February 20, 1968 

Synthesis of Thiocatechols and Acid Dissociation Constants

Thiocatechol 및 그 유도체의 합성과 산해리 정수
Joon Suk Oh, Kwang Woo Lee, Tek Jae Kim

오준석, 이광우, 김택제
New chelating ligands, thiocatechol and p-chlorothiocatechol, have been synthesized and the acid dissociation constants were determined by potentiometric method in 50% dioxane-water; pK1 and pK2 were 7.28, 10.97 for thiocatechol and 6.37, 10.22 for p-chlorothiocatechol, respectively. Color reactions with various metal ions were studied. It was found that the above ligands are specific for Bi(Ⅲ), Mo(Ⅵ) and W(Ⅵ) as an analytical reagent.
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