ISSN:
0009-2940
Keywords:
Copper complexes
;
Acetylacetonate
;
Alkynes
;
1,4-Diynes
;
Titanocenes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Monomeric (Acetylacetonato)copper(I) Complexes of Alkynes and 1,4-DiynesMonomeric (η2-Me3SiC≡CSiMe3)Cu(acac) (3) is formed by the reaction of dimeric [(η2-Me3SiC≡CSiMe3)CuBr]2 (1) with two equivalents of Na(acac) (2). In a similar manner Me2-Si(C≡CSiMe3)2 (4) reacts with CuCl (5) and 2 to afford Me2Si[(η2-C≡CSiMe3)Cu(acac)]2 (6). In compounds 3 and 6 an alkyne unit is η2-coordinated to a monomeric Cu(acac) moiety with a copper atom in a planar environment. With the organometallic 1,4-diyne (η5-C5H4SiMe3)2Ti(C≡CSiMe3)2 (7), compound [(η5-C5H4SiMe3)2Ti(C≡CSiMe3)2]Cu(acac) (8) is formed. In 8 both Me3SiC≡C ligands of the 3-titanapenta-1,4-diyne fragment are η2-coordinated to a monomeric Cu-(acac) building block. The copper atom in 8 possesses a pseudo-tetrahedral environment (shown by X-ray analysis), built by the two Me3SiC≡C ligands of the (η5-C5H4SiMe3)2-Ti(C≡CSiMe3)2 moiety and the two oxygen atoms of the acetylacetonato ligand. 8 is additionally formed by the reaction of 3 or 6 with 7, or by treatment of [(η5-C5H4SiMe3)2Ti(C≡C-SiMe3)2]CuCl (9) with Na(acac) (2). The application of 3, 6, and 8 as precursors for the preparation of copper films in the CVD process of copper(I) is discussed.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19951280515
