Clusters containing ynamine ligands. 5. Coordination and transformations of an ynamine ligand in a dimanganese complex. Synthesis and structural characterization of Mn{sub 2}(CO){sub 8}[{mu}-MeC{sub 2}NEt{sub 2}], Mn{sub 2}(CO){sub 8}[{mu}-H{sub 2}CCC(H)NEt{sub 2}], Mn{sub 2}(CO){sub 8}[{mu}-{eta}{sup 2}-C{sub 3}H{sub 3}NEt{sub 2}], and Mn{sub 2}(CO){sub 7}[{mu}-{eta}{sup 4}-C{sub 3}H{sub 3}NEt{sub 2}]
- Univ. of South Carolina, Columbia, SC (United States)
The complex Mn{sub 2}(CO){sub 8}({mu}-MeC{sub 2}NEt{sub 2}) (1), obtained from the photoreaction of Mn{sub 2}(CO){sub 10} with MeC{sub 2}NEt{sub 2}, has been structurally characterized and shown to contain an ynamine ligand asymmetrically bridging the two mutually bonded manganese atoms. The new isomer Mn{sub 2}(CO){sub 8}({mu}-H{sub 2}CCCHNEt{sub 2}) (2) was isolated in very low yield (0.7%) from this reaction. Compound 2, a second isomer, Mn{sub 2}(CO){sub 8}[{mu}-{eta}{sup 2}-C{sub 3}H{sub 3}NEt{sub 2}] (3), and a decarbonylation product of 3, Mn{sub 2}(CO){sub 7}[{mu}-{eta}{sup 4}-C{sub 3}H{sub 3}NEt{sub 2}] (4), were obtained in yields of 16%, 8%, and 22%, respectively, by heating 1 to reflux in THF solvent. All three compounds were characterized by crystallographic methods. Compound 2 is the first example of a meal complex containing a aminoallene ligand. This ligand bridges the two metal atoms. Compound 3 contains a bridging {eta}{sup 2} metalated aminoallyl ligand. Compound 4 contains a bridging {eta}{sup 4} metalated aminoally ligand. 16 refs., 4 figs., 13 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 539385
- Journal Information:
- Organometallics, Vol. 11, Issue 4; Other Information: PBD: Apr 1992
- Country of Publication:
- United States
- Language:
- English
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