Photochemical and thermal reactions of η5-cyclopentadienyltetracarbonylvanadium and bis(pentafluorophenyl)acetylene |
| |
| Authors: | DF Foust MD Rausch |
| |
| Institution: | Department of Chemistry, University of Massachusetts, Amherst, MA 01003 U.S.A. |
| |
| Abstract: | The photolysis of (η5-C5H5)V(CO)4 in the presence of one or two equivalents of bis(pentafluorophenyl)acetylene yields (η5-C5H5)V(CO)2(C6F5CCC6F5). One carbon monoxide ligand in this acetylene adduct can be photochemically displaced by triphenylphosphine to yield (η5-C5H5)V(CO)P(C6H5)3](C6F5CCC6F5). This complex is also obtained by the photolysis of (η5-C5H5)V(CO)3P(C6H5)3 in the presence of bis(pentafluorophenyl)acetylene. In vacuo, melt-phase thermolysis of (η5-C5H5)V(CO)2(C6F5CCC6F5) and bis(pentafluorophenyl)acetylene produces (η5-C5H5)V(CO)(C6F5CCC6F5)2. This diacetylenic complex as well as the perfluorinated organic compounds 2,3,5,6-tetrakis(pentafluorophenyl)-1,4-benzoquinone, 2,3,4,5-tetrakis(pentafluorophenyl)cyclopentadienone and 2,3,4,5,6,7-hexakis(pentafluorophenyl)cycloheptatrienone are also obtained from thermal reactions of (η5-C5H5)V(CO)4 and bis(pentafluorophenyl)acetylene in solution. Photolysis of (η5-C5H5)V(CO)(C6F5CCC6F5)2 in the presence of carbon monoxide produces (η5-C5H5)V(CO)2(C6F5CCC6F5). The photochemical and thermal reactions of bis(pentafluorophenyl)acetylene and (η5-C5H5)V(CO)4 are compared and contrasted with similar reactions of diphenylacetylene and (η5-C5H5)V(CO)4. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
