Premium
Über chelatbildende Salicylsäure‐Analoge der Thiophenreihe. II. Komplexchemische Untersuchungen
Author(s) -
Courtin A.,
Sigel H.
Publication year - 1965
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19650480321
Subject(s) - chemistry , thiophene , ring (chemistry) , medicinal chemistry , chelation , divalent , divalent metal , ion , metal , stereochemistry , inorganic chemistry , organic chemistry
Acidity constants of 2‐carbethoxy‐3‐hydroxy‐5‐R‐thiophenes (R H, CH 3 , phenyl, p ‐biphenylyl, α‐naphtyl) and of 3‐carbethoxy‐4‐hydroxy‐2‐R‐thiophenes (R H, CH 3 , phenyl) and stability constants of their complexes with some divalent metal ions have been determined. The stability of the chelates is discussed as a function of the respective bond orders of the α–β and β–β′ bonds of the thiophene ring.