Metal carbonyl derivatives of sulfur-containing quinones and hydroquinones: Synthesis, structures, and electrochemical properties
- Richard D. Adams(corresponding author),
- University of South Carolina
Abstract
The reaction of CpMoMn(μ-S2)(CO)5, 1, with 1,4-benzoquinone in the presence of irradiation with visible light yielded the quinonedithiolato complex CpMoMn(CO)5(μ-S2C 6H2O2), 2. The new complex CpMoMn(CO) 5(μ-S2C6Cl2O2) (4) was synthesized similarly from 1 and 2,3-dichloro-1,4-benzoquinone. Compounds 2 and 4 were reduced with hydrogen to yield the hydroquinone complexes CpMoMn(CO)5[μ-S2C6H2(OH) 2], 3, and CpMoMn(CO)5[μ-S2C 6Cl2(OH)2], 5. UV-vis irradiation of solutions of Fe2(CO)6(μ-S2) and 1,4-benzoquinone yielded the hydroquinone complex Fe2(CO)6[μ-S 2C6H2(OH)2], 6. Compound 6 was oxidized to the quinone complex Fe2(CO)6(μ-S 2C6H2O2), 7, by using 2,3-dichloro-5,6-dicyano-1,4-benzoquinone. Substitution of the CO ligands on 6 by PPh3 yielded the derivatives Fe2(CO) 5(PPh3)[μ-S2C6H 2(OH)2], 8, and Fe2(CO)4(PPh 3)2[μ-S2C6H2(OH) 2], 9. The electrochemical properties of 3, 5, 6, 8, and 9 were measured by cyclic voltammetry. The molecular structure of each of the new compounds 2-9 was established by single-crystal X-ray diffraction analyses.
Publication Information
Output type
Original language
English (US)Pages from-to (Number of pages)
Pages 8414-8426 (13 pages)Journal (Volume, Issue Number)
Inorganic Chemistry (Volume 43, Issue 26)Publication milestones
- Published - 12/27/2004
Publication status
ISSN
0020-1669Publication IDs
- Scopus: 11144261921
- PubMed: 15606190
- ORCID: /0000-0002-1899-773X/work/65876401