Spectral Studies on Cyclic Chromotropic Acid Tetramers and Their Interaction with Metal Ions
作者:
J. Duda,
A. Łacka,
期刊:
Spectroscopy Letters
(Taylor Available online 1998)
卷期:
Volume 31,
issue 7
页码: 1485-1494
ISSN:0038-7010
年代: 1998
DOI:10.1080/00387019808001654
出版商: Taylor & Francis Group
关键词: chromotropic acid;formaldehyde;glyoxylic acid;titanium (IV) complexes;cyclotetrachromotropylene derivatives
数据来源: Taylor
摘要:
With comparable molar quantities, chromotropic acid reacts with compounds containing aldehyde groups -CHO e.g. with formadehyde or glyoxylic acid to form cyclic compounds with rings containing four chromotropic acid fragments — cyclotetrachromotropylene derivatives. The cyclic compounds, due to the presence of a cavity in the molecule, can play the part of host and complex smaller molecules, which has been confirmed on the basis of triethylamine by the1H-NMR measurements. Using spectrophotometric method the stability constant of 1:1 complex formed between Ti(IV) and cyclic compound chromotropic acid with formaldehyde has been determined - K = (9,0 ± 0,1) 104.
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