Cation complexation with functionalized 9-arylacridinium ions. Part II: Conformational and spectral response upon metal-ion complexation

✍ Scribed by S. A. Jonker; J. W. Verhoeven; C. A. Reiss; K. Goubitz; D. Heijdenrijk

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 478 KB
• Volume: 109
• Category: Article
• ISSN: 0165-0513
• DOI: 10.1002/recl.19901090304

✦ Synopsis

Abstract

The chromoionophoric behaviour of compound 1 in solution was studied in relation to the X‐ray structure of its complexes with Na^+^, Ba^2+^ and Ag^+^. Interaction between the metal ion and the “soft” nitrogen atom, which forms part of the aza crown ether of 1, is concluded to be of crucial importance. It is shown that in solution a soft cation such as Ag^+^ induces a greater special spectral shift than do hard cations of equal charge and almost the same size, such as Na^+^ and K^+^. Solid‐state structures of the Ag^+^ and Na^+^ complexes of 1 show a relatively short Ag^+^ ‐N distance and a relatively long Na^+^ ‐ N distance.

Netherlands Organization for Chemical Research (SON) with financial aid from the Netherlands Organization for Scientific Research (NWO).