ISSN:
0009-2940
Keywords:
Copper(I) complexes
;
Carboxylates
;
Alkynes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Novel (η2-Alkyne)copper(I) Carboxylate ComplexesThe reaction of Me3SiC≡CSiMe3 (1) with copper(I) carboxylates [Cu(μ-O2CR)] (2a: R = Me; 2b: R = Ph) yields the tetranuclear compounds [(η2-Me3SiC≡CSiMe3)[Cu(μ-O2CR)]2)2 (3a: R = Me; 3b: R = Ph) and dimeric {(η2-Me3SiC≡CSiMe3)[Cu(μ-O2CR)]}2 (6a: R = Me; 6b: R = Ph). Compounds 6a and 6b could only be characterized by using IR and NMR techniques, since in solution these compounds eliminate 1 to afford 3a or 3b, respectively. Complexes 3a and 3b can additionally be synthesized by the reaction of [(η2-Me3SiC≡CSiMe3)CuBr]2 (4) with [Ag(μ-O2CR)] (5a: R = Me; 5b: R = Ph). In 6 two carboxylate moieties are μ-bridging two (η2-Me3SiC≡CSiMe3)Cu building blocks, and the Me3SiC≡CSiMe3 fragments are each η2-coordinated to one copper atom. In 3 the Me3SiC≡CSiMe3 units are each η2-coordinated to two copper atoms and are perpendicularly orientated to the copper(I) core; the four copper atoms form a square-planar arrangement. Compounds 3a and 3b have been characterized by analytical and spectroscopic data (IR, 1H-, 13C-NMR, MS) and 3a by X-ray analysis.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19951280514
