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Electrospray ionization mass spectrometric study of 1,3,4-oxadiazole–copper complexes

✍ Scribed by Rafał Frański

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
112 KB
Volume
39
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

The complexes of 2,5‐disubstituted‐1,3,4‐oxadiazoles, namely 2,5‐diphenyl‐1,3,4‐oxadiazole (1), 2,5‐bis(2‐pyridyl)‐1,3,4‐oxadiazole (2) and 2,5‐bis(4‐pyridyl)‐1,3,4‐oxadiazole (3), with copper cation were studied by electrospray ionization mass spectrometry (ESI‐MS). The ability of the compounds studied to form complexes with copper (under the ESI conditions) can be ordered as 2 > 1 > 3. The compounds studied tend to form both 1 : 1 and 2 : 1 chelate complexes with both copper(II) and copper(I). The complexes with copper(I) are formed in the ESI process. The influence of solvent polarity, solution flow‐rate, counter ions (Cl^−^, NO~3~^−^, CH~3~COO^−^, SO~4~^2−^, acetylacetonates) on the type of the ions observed was studied. Copyright © 2004 John Wiley & Sons, Ltd.

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