Potentiometric investigations and effects of substituents on basicity of some acyclic(polyether)s with Schiff base type in acetonitrile and acetic acid


Yilmaz S. , Yildiz M. , akgün n.

JOURNAL OF THE INDIAN CHEMICAL SOCIETY, vol.83, no.3, pp.299-301, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 83 Issue: 3
  • Publication Date: 2006
  • Title of Journal : JOURNAL OF THE INDIAN CHEMICAL SOCIETY
  • Page Numbers: pp.299-301

Abstract

The basicity of the acyclic(polyether)s with Schiff base type, namely 1,5-di[N-2-oxyphenyl-salicylidene]-3-oxapentane (1), 1,5-di[N-2-oxyphenyl-5-methoxvsalicylidene]-3-oxapentane (2), 1,5-di[N-2-oxyphenyl-5-broinosalicylidene]3-oxapentane (3), 1,5-di[N-2-oxyphenyl-5-nitrosalicylidene]-3-oxapentane (4), 1,5-di[N-2-oxyphenyl-2-oxo-1-naphthylidenemethylamino]-3-oxapentane (5), 1,8-di[N-2-oxyphenylsalicylidene]-3,6-dioxaoctane (6), 1,8-di[N-2-oxyphenyl-5-methoxysalicylidene]-3,6-dioxaoctane (7), 1,8-di[N-2-oxyphenyl-5-bromosalicylidene]-3,6-dioxaoctane (8), 1,8-di[N-2oxy phenyl-5-nitrosalicylidene]-3,6-dioxaoctane (9), 1,8-di[N-2-oxyphenyl-2-oxa-1-naphthylidenemethylamino]-3,6-dioxaoctane (10) was investigated potentiometrically in acetonitrile and acetic acid solvents. All compounds except one have shown rather well-shaped and stoichiometric titration curves in acetonitrile and acetic acid. The effect of substituents on basicities of these compound have been investigated. The orders of the basicity of substituents is H > OCH3 > Br > NO2.