ISSN:
0009-2940
Keywords:
Silver complexes
;
Copper complexes
;
Dialkyne ligands
;
1,6-Cyclodecadiyne
;
1,7-Cyclododecadiyne
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Silver(1) and Copper(1) Complexes of 1,6-Cyclodecadiyne and 1,7-CyclododecadiyneThe reactions of 1,6-cyclodecadiyne (1), 1,7-cyclododecadiyne (2), and 1,8-cyclotetradecadiyne (3) with silver(I) triflate and copper(I) triflate yield colourless crystals: [C10H12·AgCF3SO3]n (4), [C10H12·CuCF3SO3]n(5), [C12H16·AgCF3SO3]n (6), [C12H16·CuCF3SO3]n (7), and [C14H20·AgCF3SO3]n (8). The spectroscopic data of 4-8 indicate a weak interaction between the triple bonds and the metal ion. In the crystal structure of 4 double-strands of 1,6-cyclodecadiyne rings in the chair conformation are coupled by Ag(CF3SO3)2Ag units to form a two-dimensional network. The X-ray analysis of single crystals of 6 and 7 reveals twelve-membered rings that are connected by silver or copper ions, respectively. Each triflate ligand in 6 and 7 uses two of its oxygen atoms to coordinate two different metal centers. The result is a complex three-dimensional network. In the case of the silver complex 8, the X-ray analysis also exhibits a similar polymeric structure. Only slight differences of the structural parameters are observed on comparison of the free cyclic dialkyne and that bound to a metal in 4, 6, and 7. The conformation of the 10- or 12 membered rings in 1 and 2 are more or less identical to those in 4 or 6 and 7.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19901230703
