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Structural characterization of a copper nitrosyl complex with a {CuNO}10 configuration
Ashley M Wright1, Guang Wu, Trevor W Hayton
1Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA.
Journal of the American Chemical Society
|October 1, 2010
Summary
Researchers synthesized a novel copper-nitrosyl complex, [Cu(CH(3)NO(2))(5)(NO)][PF(6)](2), which readily transfers the nitrosonium (NO(+)) ion to mesitylene.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
Background:
- Copper complexes with nitrosyl ligands are of interest due to their unique electronic properties.
- Nitrosyl complexes can serve as sources of the nitrosonium (NO(+)) ion.
Purpose of the Study:
- To synthesize and characterize a new copper-nitrosyl complex.
- To investigate the reactivity of the synthesized complex, particularly its ability to transfer the nitrosonium ion.
Main Methods:
- Synthesis of the copper-nitrosyl complex [Cu(CH(3)NO(2))(5)(NO)][PF(6)](2) via reaction of copper metal powder with nitromethane and [NO][PF(6)].
- Characterization of the complex in the solid state, including X-ray crystallography to determine molecular geometry.
- Reaction of the complex with mesitylene to study its chemical reactivity.
Main Results:
- The novel copper-nitrosyl complex [Cu(CH(3)NO(2))(5)(NO)][PF(6)](2) was successfully synthesized and characterized.
- Solid-state analysis revealed a bent Cu-N-O moiety (121.0(3)°) and a long Cu-N bond.
- The complex readily reacted with mesitylene, facilitating the transfer of the nitrosonium (NO(+)) ion to the mesitylene ring, forming [mesitylene, NO][PF(6)] and a bis(mesitylene)copper(I) complex.
Conclusions:
- The synthesized copper-nitrosyl complex is a viable precursor for the transfer of the nitrosonium ion.
- The reaction with mesitylene demonstrates a new pathway for functionalizing aromatic rings with a nitrosyl group.
- This study expands the known reactivity of copper-nitrosyl complexes.
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