Issue 9, 1990

Synthesis of 1,10-dithia-4,7,13,16-tetra-azacyclo-octadecane, 1-aza-4,7-dithiacyclononane, and N,N′-1,2-bis(1-aza-4,7-dithia-cyclononyl)ethane. Structural and solution studies of their silver complexes

Abstract

The synthesis of the ligands 1-aza-4,7-dithiacyclononane, N,N′-1,2-bis(1-aza-4,7-dithiacyclo-nonyl)ethane, and 1,10-dithia-4,7,13,16-tetra-azacyclo-octadecane and their silver(I) complexes are reported. Stability constants in water and methanol have been determined using pH-metric methods, and enthalpies of complexation measured calorimetrically in methanol. The N-alkyl derivatives show enhanced enthalpies of complexation, but exhibit unfavourable entropies of complexation. Crystal structures of the [18]-N4S2 and bis[9]-NS2 silver complexes reveal distorted octahedral co-ordination geometry, although in aqueous solution the bis[9]-NS2 silver complex does not adopt the sandwich structure revealed in the crystallographic analysis.

Article information

Article type
Paper

J. Chem. Soc., Perkin Trans. 2, 1990, 1523-1531

Synthesis of 1,10-dithia-4,7,13,16-tetra-azacyclo-octadecane, 1-aza-4,7-dithiacyclononane, and N,N′-1,2-bis(1-aza-4,7-dithia-cyclononyl)ethane. Structural and solution studies of their silver complexes

A. S. Craig, R. Kataky, R. C. Matthews, D. Parker, G. Ferguson, A. Lough, H. Adams, N. Bailey and H. Schneider, J. Chem. Soc., Perkin Trans. 2, 1990, 1523 DOI: 10.1039/P29900001523

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