Ligand transformations and catalysis by transition metal cluster compounds containing sulfur: Progress report, 1986--1988
We have conducted extensive investigations into the nature of multicenter based ligand transformations in a variety of metal cluster complexes containing sulfido or sulfur-containing ligands. These investigations have resulted in the preparation of several new cluster complexes containing thioformaldehyde ligands and the first cluster complexes to contain thioformyl ligands. We have discovered new routes to cluster complexes containing aminocarbene ligands, and have prepared the first cluster complexes to contain triply bridging aminocarbene ligands and the first cluster complexes containing iminium ligands. We have prepared several new cluster complexes containing ynamine ligands and performed the first structural characterization of such a complex. Most importantly, most of these complexes have been shown by us to engage in novel multicenter ligand transformations. We have investigated a new mixed-metal cluster complex for its ability to produce alkyne oligomerization and have found that the mixed-metal complex exhibits some ligand transformation properties that its homonuclear components do not have. Finally, we have discovered some new cluster complexes that are capable of performing the tertiary amine metathesis reaction catalytically. We have performed numerous experiments to ascertain the mechanism(s) of these processes and are now on the verge of presenting detailed analyses. A summary of these results are contained in the following sections. 2 figs.
- Research Organization:
- South Carolina Univ., Columbia (USA). Dept. of Chemistry
- DOE Contract Number:
- FG09-84ER13296
- OSTI ID:
- 6478053
- Report Number(s):
- DOE/ER/13296-5; ON: DE89006646
- Country of Publication:
- United States
- Language:
- English
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Ligand transformations and catalysis by transition metal cluster compounds containing sulfur: Progress report, 1986
Cluster complexes containing ynamine ligands. 1. Synthesis and structural characterizations of the complexes Os sub 4 (CO) sub 11 (. mu. sub 3 -MeC sub 2 NMe sub 2 )(. mu. -MeC sub 2 NMe sub 2 )(. mu. sub 3 -S), Os sub 4 (CO) sub 11 (. mu. -C(Me)C(NMe sub 2 )C(NMe sub 2 )CMe)(. mu. sub 3 -S), Os sub 4 (CO) sub 11 (. mu. -C(NMe sub 2 )C(Me)C(Me)C(NMe sub 2 ))(. mu. sub 3 -S), Os sub 4 (CO) sub 9 (. mu. -MeC sub 2 NMe sub 2 )(. mu. -C(Me)C(NMe sub 2 )C(Me)C(NMe sub 2 ))-(. mu. sub 3 -S), and Os sub 3 (CO) sub 7 (. mu. sub 3 -MeC sub 2 NMe sub 2 )(. mu. -MeC sub 2 NMe sub 2 )(. mu. sub 3 -S)
Related Subjects
400201* -- Chemical & Physicochemical Properties
ALDEHYDES
ALKYNES
CARBENES
CATALYSIS
CHEMICAL ACTIVATION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPLEXES
DOCUMENT TYPES
FORMALDEHYDE
HYDROCARBONS
LIGANDS
MOLECULAR STRUCTURE
MOLYBDENUM COMPLEXES
ORGANIC COMPOUNDS
PROGRESS REPORT
RADICALS
RUTHENIUM COMPLEXES
STRUCTURAL CHEMICAL ANALYSIS
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES