ISSN:
1572-8862
Keywords:
Heterometallic cluster
;
ruthenium
;
tungsten
;
carbamoyl
;
acetylide
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Treatment of the carbamoyl cluster Ru3(CO)10(μ-H)(μ-η2-OC(NMe2)] with a two molar excess of CpW(CO)3C≡Cn Pr in refluxing toluene produced a heterometallic cluster complex CpWRu2(CO)7(μ-H)[OC(NMe2) CCHCHEt] (II), whereas the heterometallic clusters CpWRu2(CO)6(μ-H)[OC(NMe2)CCH(μ-η2-C6H3X)] (IVb, X=H;IVc, X=Me;IVd, X=F) were isolated from the reactions with CpW(CO)3C≡CC6H4X under similar conditions. Both complexesII andIV were generated via a complicated sequence involving hydride migration to the acetylide, fragmentation of the cluster via removal of a Ru(CO)n unit, coupling with the carbamoyl ligand and C-H bond activation at the substituent. Crystal data forII: space group R $$\bar 3$$ ;a=26.605(3),c=17.934(2) Å,Z=18; finalR F =0.032,R w =0.034 for 2720 reflections withI〉2σ(I). Crystal data forIVb: space group C 2/c;a=16.120(6),b=14.972(2),c=18.872(4) Å, β=95.46(2)°,Z=8; finalR F =0.0375,R w =0.0375 for 2074 reflections withI〉3σ(I).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00702931
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