Lipophilicity of Metallic Complexes of 4-Methoxyphenyl - 4' - Chlorobenzoylhydrazine as Estimated from Principal Component Analysis of thin Layer Chromatographic Retention Data
作者:
Mariana Rusu,
Dan Rusu,
Costel Sârbu,
期刊:
Analytical Letters
(Taylor Available online 1999)
卷期:
Volume 32,
issue 15
页码: 2999-3011
ISSN:0003-2719
年代: 1999
DOI:10.1080/00032719908543023
出版商: Taylor & Francis Group
关键词: TLC;PCA;metallic complexes;lipophilicity, congeneric lipophilicity chart;chemometrics
数据来源: Taylor
摘要:
The relative lipophilicity of ten metallic complexes of 4-methoxyphenyl-4'-chlorobenzoylhydrazine with Cu2+, Co2+, Mn2+, Ni2+, Pd2+, Fe3+, Cr3+, La3+, Ce4+and UO22+with potentially anti-inflammatory properties have been determined by reversed-phase thin-layer chromatography using C18plates and water-methanol mixtures as eluents. The RFvalues of each compound increased linearly with increasing concentration of methanol in the eluent. Principal component analysis allowed a more rational and objective estimation and comparison of lipophilicity determined by RPTLC. Scatterplots of the scores onto a plane described by the first two components showed clustering of the complexes according to the nature of the central cation, obtaining in this way a "congeneric lipophilicity chart". Generally, the presence of cation increases the lipophilicity expressed as scores along the first principal component, practically in the same way. This means that the lipophilic behavior of metallic complexes depends firstly of the structure of ligand. However, the most lipophilic effect was observed in the case of Cu2+, Pd2+, La3+and Cr3+.
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