Structure sensitive bands in the vibrational spectra of metal complexes of tetraphenylporphine

✍ Scribed by Hiroki Oshio; Tomoharu Ama; Takeshi Watanabe; James Kincaid; Kazuo Nakamoto

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 701 KB
• Volume: 40
• Category: Article
• ISSN: 1386-1425
• DOI: 10.1016/0584-8539(84)80176-2

✦ Synopsis

The i.r. and RR spectra of twenty Fe(TPP)LL' type complexes have been measured to locate structure-sensitive bands. In i.r. spectra, band I (135&1330cm-i) and band III (469432cm-') are spinstate sensitive whereas band II (806790cm-') is oxidation-state sensitive and slightly spin-state sensitive in the Fe(I1) state. To examine the nature of these bands, the i.r. spectra of Co(TPP), (Fe(TPP)),O

and their d8 and d2,, analogs have been measured, and empirical assignments proposed.

In RR spectra, band C (154551498cm-i, ap) and band D (1565%1540cm-', p) are spin-state sensitive whereas band E (391-376cn-', p) is sensitive to both spin and oxidation states. These results on RR spectra are in good agreement with those of previous workers. II 1 II 1 II 1 II h II h 1340 (m) 1333 (m) 1339 (s) 1334 (s) 1338 (m) 1337 (m) 1341 (sh) 1331 (s) 1339 (m) 1334 (m) 1340 (m) 1334 (m) 1340 (m) 1340 (m) 1334 (m) 1335 (m) 1336 (m) 1344 (m) 1343 (m) 1344 (m) 1346 (m) 1348 (m) 1349 (s) 1347 (s) 1337 (m) 1336 (s)