INTERPHASE PROCESSES INVOLVING HYDRAZINE DERIVATIVES .2. FORMATION OFTHE SUPRAMOLECULAR COMPLEX WITH ETHERS, ALKALI HYDROXIDES AND 2,2-DIPHENYL-1-PICRYLHYDRAZINE AS PARTNERS IN LIQUID-LIQUID AND SOLID-LIQUID DIPHASIC SYSTEM

Citation
C. Luca et al., INTERPHASE PROCESSES INVOLVING HYDRAZINE DERIVATIVES .2. FORMATION OFTHE SUPRAMOLECULAR COMPLEX WITH ETHERS, ALKALI HYDROXIDES AND 2,2-DIPHENYL-1-PICRYLHYDRAZINE AS PARTNERS IN LIQUID-LIQUID AND SOLID-LIQUID DIPHASIC SYSTEM, Revue Roumaine de Chimie, 42(2), 1997, pp. 105-109
Citations number
13
Categorie Soggetti
Chemistry
Journal title
ISSN journal
00353930
Volume
42
Issue
2
Year of publication
1997
Pages
105 - 109
Database
ISI
SICI code
0035-3930(1997)42:2<105:IPIHD.>2.0.ZU;2-R
Abstract
The formation of the supramolecular complex (CE...M)+DPPH-, (where CE is a crown ether like 12-C-4, 15-C-5, 18-C-6, DB 18-C-6 and DCH 18-C-6 ; M is an alkaline metal ion like Li+, Na+, K+; DPPH- is the anion of DPPH2) with a base M+HO- as a partner, with DPPH2 and with carrier CE is an acido-basic type process occurring in two steps. The former is t he formation of the intermediate (CE...M)+HO- by an interphase transfe r equilibrium. The concentration of the intermediate in organic phase depends on the nature and concentration of CE and M+HO-. The latter su bsequent reaction in the organic phase of acid-base type between HO- i on transferred as (CE...M)+HO- and DPPH2 results in (CE...M)+DPPH- sup ramolecular complex whose concentration depends on the concentration o f (CE...M)+HO- intermediate obtained in the first step.