Ultraviolet photoelectron spectra of 4-substituted pyridine-pentacarbonylchromium complexes

✍ Scribed by M.A. Weiner; A. Gin; M. Lattman

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 416 KB
• Volume: 24
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)93881-7

✦ Synopsis

The ultraviolet photoelectron spectra of Cr(CO)5-(4-Rpyr) have been measured, and the IP's observed below 12 eV are discussed. Bands found in the region 7-8 e V are assigned to ionization from the chromium d orbitals. The IP values are shown to increase with the increasing electron acceptor nature of the ring substituents. The remaining bands below 12 eV are assigned to the pyridine orbitals. The IP values of the uncomplexed pyridines are observed to increase upon complexation, and a comparison is made of the effects of complexation with the Cr(CO), and BH3 moieties.