Cyclobutyne ligands. 4. Ruthenium carbonyl clusters containing substituted cyclobutyne ligands and the first example of a quadruply bridging cyclobutyne ligand

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Organometallics; (United States)

DOI:https://doi.org/10.1021/om00016a033· OSTI ID:7019595

Adams, R D; Qu, X; Wu, W ^[1]

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1. Univ. of South Carolina, Columbia, SC (United States)

The reaction of 4-tert-butyl-4-methyl-1-(phenylthio)cyclobutene with Ru[sub 3](CO)[sub 12] at 98[degree]C has yielded four new complexes: Ru[sub 4](CO)[sub 12][[mu][sub 4]-S[ovr C[sub 2]CH[sub 2]C](Me)[sup t]Bu] (1; 12%), Ru[sub 3](CO)[sub 8][[mu][sub 3]-[eta][sup 2]-[ovr C[sub 2]-CH[sub 2]C](Me)[sup t]Bu]([mu][sub 4]-S)[sub 2] (2; 1%), Ru[sub 4](CO)[sub 11][[mu][sub 4]-[eta][sup 2]-[ovr C[sub 2]CH[sub 2]C](Me)[sup t]Bu]([mu][sub 4]-S) (3; 14%), and a trace of Ru[sub 6](CO)[sub 16][[mu][sub 4]-CCHCH=C(Me)[sup t]Bu]([mu][sub 4]-S) (4; 1%). All four products were characterized by single-crystal X-ray diffraction analyses. Compounds 2 and 3 contain new examples of the disubstituted cyclobutyne ligand [ovr C[sub 2]CH[sub 2]C](Me)[sup t]Bu, formed by the cleavage of the hydrogen atom and the phenylthio group from the cyclobutene ring. Compound 1 contains a quadruply bridging metalated 1-sulfidocyclobutenyl group. It was transformed to compound 3, which contains the first example of a quadruply bridging cyclobutyne ligand. Compound 4 contains six ruthenium atoms arranged in the shape of an edge-bridged square-pyramidal cluster. A sulfido ligand bridges the square base, and a CH=C(Me)[sup t]Bu substituted-vinylidene ligand bridges one triangle of the square pyramid and the edge-bridging ruthenium atom. 18 refs., 5 figs., 16 tabs.

• OSTI ID: 7019595
• Journal Information: Organometallics; (United States), Journal Name: Organometallics; (United States) Vol. 13:4; ISSN 0276-7333; ISSN ORGND7
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
ALKENES
ALKYNES
CARBONYLS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COHERENT SCATTERING
COMPILED DATA
COMPLEXES
CRYSTAL STRUCTURE
CYCLOALKYNES
DATA
DIFFRACTION
DIMERS
HYDROCARBONS
INFORMATION
KINETICS
LIGANDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
REACTION KINETICS
RUTHENIUM COMPLEXES
SCATTERING
SOLID CLUSTERS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
X-RAY DIFFRACTION