Molecular structures of five-coordinated halide ligated iron(III) porphyrin, porphycene, and corrphycene complexes

Yoshiki Ohgo; Saburo Neya; Takahisa Ikeue; Masashi Takahashi; Masuo Takeda; Noriaki Funasaki; Mikio Nakamura

doi:10.1021/ic0256866

Molecular structures of five-coordinated halide ligated iron(III) porphyrin, porphycene, and corrphycene complexes

Yoshiki Ohgo, Saburo Neya, Takahisa Ikeue, Masashi Takahashi, Masuo Takeda, Noriaki Funasaki, Mikio Nakamura

Research output: Contribution to journal › Article › peer-review

52 Citations (Scopus)

Abstract

Molecular structures of 12 porphyrin analogues, Fe^III(EtioP)X(1_a-1_d), Fe^III(EtioCn)X(2_a-2_d), and Fe^III(Etio-Pc)X(3_a-3_d), where X = F (a), Cl (b), Br (c), and I (d), are determined on the basis of X-ray crystallography. Combined analyses using Mössbauer, ¹H NMR, and EPR spectroscopy as well as SQUID magnetometry have revealed that 3_d exhibits a quite pure S = 3/2 spin state with a small amount of an S = 5/2 spin admixture. In contrast, all the other complexes show the S = 5/2 spin state with a small amount of the S = 3/2 spin admixture. The structural and spectroscopic data indicate a strong correlation between the spin states of the complexes and the core geometries such as Fe-N bond lengths, cavity areas, and ΔFe values.

Original language	English
Pages (from-to)	4627-4629
Number of pages	3
Journal	Inorganic Chemistry
Volume	41
Issue number	18
DOIs	https://doi.org/10.1021/ic0256866
Publication status	Published - 2002 Sept 9
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

Access to Document

10.1021/ic0256866

Cite this

@article{2ebb61f583aa4ccfaf45e5ca3dcc76d1,

title = "Molecular structures of five-coordinated halide ligated iron(III) porphyrin, porphycene, and corrphycene complexes",

abstract = "Molecular structures of 12 porphyrin analogues, FeIII(EtioP)X(1a-1d), FeIII(EtioCn)X(2a-2d), and FeIII(Etio-Pc)X(3a-3d), where X = F (a), Cl (b), Br (c), and I (d), are determined on the basis of X-ray crystallography. Combined analyses using M{\"o}ssbauer, 1H NMR, and EPR spectroscopy as well as SQUID magnetometry have revealed that 3d exhibits a quite pure S = 3/2 spin state with a small amount of an S = 5/2 spin admixture. In contrast, all the other complexes show the S = 5/2 spin state with a small amount of the S = 3/2 spin admixture. The structural and spectroscopic data indicate a strong correlation between the spin states of the complexes and the core geometries such as Fe-N bond lengths, cavity areas, and ΔFe values.",

author = "Yoshiki Ohgo and Saburo Neya and Takahisa Ikeue and Masashi Takahashi and Masuo Takeda and Noriaki Funasaki and Mikio Nakamura",

year = "2002",

month = sep,

day = "9",

doi = "10.1021/ic0256866",

language = "English",

volume = "41",

pages = "4627--4629",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "18",

}

TY - JOUR

T1 - Molecular structures of five-coordinated halide ligated iron(III) porphyrin, porphycene, and corrphycene complexes

AU - Ohgo, Yoshiki

AU - Neya, Saburo

AU - Ikeue, Takahisa

AU - Takahashi, Masashi

AU - Takeda, Masuo

AU - Funasaki, Noriaki

AU - Nakamura, Mikio

PY - 2002/9/9

Y1 - 2002/9/9

N2 - Molecular structures of 12 porphyrin analogues, FeIII(EtioP)X(1a-1d), FeIII(EtioCn)X(2a-2d), and FeIII(Etio-Pc)X(3a-3d), where X = F (a), Cl (b), Br (c), and I (d), are determined on the basis of X-ray crystallography. Combined analyses using Mössbauer, 1H NMR, and EPR spectroscopy as well as SQUID magnetometry have revealed that 3d exhibits a quite pure S = 3/2 spin state with a small amount of an S = 5/2 spin admixture. In contrast, all the other complexes show the S = 5/2 spin state with a small amount of the S = 3/2 spin admixture. The structural and spectroscopic data indicate a strong correlation between the spin states of the complexes and the core geometries such as Fe-N bond lengths, cavity areas, and ΔFe values.

AB - Molecular structures of 12 porphyrin analogues, FeIII(EtioP)X(1a-1d), FeIII(EtioCn)X(2a-2d), and FeIII(Etio-Pc)X(3a-3d), where X = F (a), Cl (b), Br (c), and I (d), are determined on the basis of X-ray crystallography. Combined analyses using Mössbauer, 1H NMR, and EPR spectroscopy as well as SQUID magnetometry have revealed that 3d exhibits a quite pure S = 3/2 spin state with a small amount of an S = 5/2 spin admixture. In contrast, all the other complexes show the S = 5/2 spin state with a small amount of the S = 3/2 spin admixture. The structural and spectroscopic data indicate a strong correlation between the spin states of the complexes and the core geometries such as Fe-N bond lengths, cavity areas, and ΔFe values.

UR - http://www.scopus.com/inward/record.url?scp=0037047960&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037047960&partnerID=8YFLogxK

U2 - 10.1021/ic0256866

DO - 10.1021/ic0256866

M3 - Article

C2 - 12206684

AN - SCOPUS:0037047960

SN - 0020-1669

VL - 41

SP - 4627

EP - 4629

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 18

ER -

Molecular structures of five-coordinated halide ligated iron(III) porphyrin, porphycene, and corrphycene complexes

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this