Macrocyclic ligand design: The interaction of selected transition and post-transition metal ions with a 14-membered N2S2-donor macrocycle

Chartres, Jy D., Davies, Murray S., Lindoy, Leonard F., Meehan, George V., and Wei, Gang (2006) Macrocyclic ligand design: The interaction of selected transition and post-transition metal ions with a 14-membered N2S2-donor macrocycle. Inorganic Chemistry Communications, 9 (7). pp. 751-754.

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Abstract

Interaction of 1,7-dithia-4,11-diazacyclotetradecane (1) with nickel(II), copper(II) and silver(I) yields the complexes [NiL(H2O)(CH3CN)](ClO4)2, [CuL](ClO4)2 and [AgL]n(ClO4)n (L = 1). The log K values for the 1:1 complexes of cobalt(II), copper(II), zinc(II), cadmium(II), silver(I) and lead(II) in 95% MeOH are reported, with the strongest complexes occurring for copper(II) and silver(I). The X-ray structure of the nickel complex shows the four donors of the macrocycle coordinated around cis positions of an octahedron, with water and acetonitrile ligands occupying the remaining cis positions (the latter are trans to the amine donors and the sulfurs occupy trans axial positions). The silver complex is distorted square pyramidal with all macrocyclic donors bound; each sulfur bridges to an adjacent silver centre such that the latter attains a S3N2 environment and a cationic zig-zag polymeric arrangement is generated.

Item ID: 4595
Item Type: Article (Research - C1)
ISSN: 1387-7003
Keywords: stability constants; nickel; silver; copper; macrocycle; S2N2-donor macrocycle; Nickel(II); Copper(II); Silver(I); X-ray
Date Deposited: 15 Jun 2009 05:54
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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