Structure, optical and magnetic behaviour of meso- tetraphenylporphyrinatoiron(III) tetracyanoethenide, [FeIII(TPP)] +[TCNE].-

Shinji Mikami, Ken Ichi Sugiura, Tatsuo Maruta, Yonezo Maeda, Masaaki Ohba, Naoki Usuki, Hisashi Okawa, Tomoyuki Akutagawa, Sadafumi Nisihara, Takayoshi Nakamura, Kentaro Iwasaki, Nobuyuki Miyazaki, Shojun Hino, Eiji Asato, Joel S. Miller, Yoshiteru Sakata

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The direct redox reaction between tetracyanoethylene (TCNE) and meso-tetraphenylporphyrinatoiron(II), [FeII(TPP)], formed the electron transfer salt (ETS) [FeIII(TPP)][TCNE], which has been structurally, spectroscopically, and magnetically characterized. It has an extended one-dimensional linear chain with coordination polymer motif comprised of [FeIII(TPP)]+ and bridging μ-[TCNE].- with Fe-NTCNE distance 1.889(2) Å. This coordination geometry is consistent with a low-spin iron(III) ion, i.e., one electron transfer from FeII to TCNE produces S = 1/2 [FeIII(TPP)]+ having a (dxy)2(dyz,dzx)3 configuration and S = 1/2 [TCNE].-. 57Fe Mössbauer data, δ = 0.28 mm s-1 and ΔE = 2.19 mm s-1 at 77 K, also support the low-spin state. The room temperature magnetic moment of the ETS, 1.20 μB, arises from two S = 1/2 systems having antiferromagnetic coupling, -190 cm-1 (H = -2Σ J ijSiSj).

Original languageEnglish
Pages (from-to)448-455
Number of pages8
JournalJournal of the Chemical Society, Dalton Transactions
Issue number4
DOIs
Publication statusPublished - 2001 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

Fingerprint Dive into the research topics of 'Structure, optical and magnetic behaviour of meso- tetraphenylporphyrinatoiron(III) tetracyanoethenide, [Fe<sup>III</sup>(TPP)] <sup>+</sup>[TCNE]<sup>.-</sup>'. Together they form a unique fingerprint.

  • Cite this

    Mikami, S., Sugiura, K. I., Maruta, T., Maeda, Y., Ohba, M., Usuki, N., Okawa, H., Akutagawa, T., Nisihara, S., Nakamura, T., Iwasaki, K., Miyazaki, N., Hino, S., Asato, E., Miller, J. S., & Sakata, Y. (2001). Structure, optical and magnetic behaviour of meso- tetraphenylporphyrinatoiron(III) tetracyanoethenide, [FeIII(TPP)] +[TCNE].-. Journal of the Chemical Society, Dalton Transactions, (4), 448-455. https://doi.org/10.1039/b007931f