- Title
- Comparative Spectroscopic and Electrochemical Properties of Bis (octakis (dodecylthio) naphthalocyaninato) europium (III) and Bis (tetra-tert-butylnaphthalocyaninato) europium (III) Complexes
- Creator
- Nyokong, Tebello, Furuya, Fumio, Kobayashi, Nagao, Du, Daming, Liu, Wei, Jiang, Jianzhuang
- Subject
- To be catalogued
- Date
- 2000
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/293174
- Identifier
- vital:57062
- Identifier
- xlink:href="https://doi.org/10.1021/ic990483b"
- Description
- Bis(substituted-2,3-naphthalocyaninato)europium(III) complexes: bis(octakis(dodecylthio)-2,3-naphthalocyaninato)europium(III) {Eu[2,3-Nc(SC12H25)8]2, 1} and bis(tetra-tert-butyl-2,3-naphthalocyaninato)europium(III) {Eu[2,3-Nc(t-Bu)4]2, 2} have been synthesized by cyclic tetramerization of naphthalonitriles with Eu(acac)3·H2O in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) in refluxing n-octanol. These compounds were characterized by UV−visible, magnetic circular dichroism (MCD), near-IR, IR, EPR, and mass spectroscopies. The absorption and MCD spectra of 1 showed splitting of the Q band, with peaks at 700 and 784 nm, red shifted from the Q band of 2 at 763 nm. The absorption and MCD spectral band deconvolution calculations of complex 1 gave two A terms in the Q-band region. The A terms are assigned to 2A2 → 2E1 transitions. Cyclic voltammograms of 1 and 2 showed reversible oxidation couples at E1/2 = −0.28 V (for 2) and −0.25 V (for 1) vs ferrocenium/ferrocene (Fc+/Fc). The second oxidation exhibited a complicated behavior for both complexes. The reduction couples for 2 were observed at E1/2 = −0.61, −1.64, −1.97, and −2.42 V, and for 1 they were observed at E1/2 = −0.62, −1.60, −1.86, and −2.27 V vs Fc+/Fc. Spectral changes observed on chemical oxidation and reduction of the complexes are presented, and the behaviors of 1 and 2 are compared.
- Format
- computer, online resource, application/pdf, 1 online resource (8 pages), pdf
- Publisher
- ACS Publications
- Language
- English
- Relation
- Inorganic Chemistry, Nyokong, T., Furuya, F., Kobayashi, N., Du, D., Liu, W. and Jiang, J., 2000. Comparative Spectroscopic and Electrochemical Properties of Bis (octakis (dodecylthio) naphthalocyaninato) europium (III) and Bis (tetra-tert-butylnaphthalocyaninato) europium (III) Complexes. Inorganic chemistry, 39(1), pp.128-135, Inorganic Chemistry volume 39 number 11 p. 128 2000 1520-510X
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the ACS Publications Terms of Use Statement (https://0-www.acs.org.wam.seals.ac.za/content/acs/en/terms.html)
- Rights
- Closed Access
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Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
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