1,2,4,5-Tetra([5]trovacenyl)benzene: An organometallic tetraradical displaying pronounced electro- and magnetocommunication

Christoph Elschenbroich; Olav Schiemann; Olaf Burghaus; Klaus Harms

doi:10.1039/b418831b

1,2,4,5-Tetra([5]trovacenyl)benzene: An organometallic tetraradical displaying pronounced electro- and magnetocommunication

Christoph Elschenbroich
, Olav Schiemann
, Olaf Burghaus
, Klaus Harms

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

9 Scopus citations

Abstract

The organometallic tetraradical 1,2,4,5-[(η⁷-C ₇H₇)V(η⁵-C₅H₄)] ₄C₆H₂ has been prepared and structurally characterized. The isotropic EPR spectrum displays 29 a(⁵¹V) hyperfine lines, the intensity distribution slightly deviating from binomial. Exchange coupling therefore approaches the strong exchange limit, J _ortho ≠ J_meta ≠ J_para, ≳50 a( ⁵¹V) with a(⁵¹V) = 0.0067 cm^-1. According to magnetic susceptometry, the interaction is antiferromagnetic. While redox splittings δE1/2, are resolved for the four reduction steps this is not the case for oxidation.

Original language	English
Pages (from-to)	2149-2151
Number of pages	3
Journal	Chemical Communications
Issue number	16
DOIs	https://doi.org/10.1039/b418831b
State	Published - 28 Apr 2005
Externally published	Yes

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title = "1,2,4,5-Tetra([5]trovacenyl)benzene: An organometallic tetraradical displaying pronounced electro- and magnetocommunication",

abstract = "The organometallic tetraradical 1,2,4,5-[(η7-C 7H7)V(η5-C5H4)] 4C6H2 has been prepared and structurally characterized. The isotropic EPR spectrum displays 29 a(51V) hyperfine lines, the intensity distribution slightly deviating from binomial. Exchange coupling therefore approaches the strong exchange limit, J ortho ≠ Jmeta ≠ Jpara, ≳50 a( 51V) with a(51V) = 0.0067 cm-1. According to magnetic susceptometry, the interaction is antiferromagnetic. While redox splittings δE1/2, are resolved for the four reduction steps this is not the case for oxidation.",

author = "Christoph Elschenbroich and Olav Schiemann and Olaf Burghaus and Klaus Harms",

year = "2005",

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doi = "10.1039/b418831b",

language = "English",

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journal = "Chemical Communications",

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T1 - 1,2,4,5-Tetra([5]trovacenyl)benzene

T2 - An organometallic tetraradical displaying pronounced electro- and magnetocommunication

AU - Elschenbroich, Christoph

AU - Schiemann, Olav

AU - Burghaus, Olaf

AU - Harms, Klaus

PY - 2005/4/28

Y1 - 2005/4/28

N2 - The organometallic tetraradical 1,2,4,5-[(η7-C 7H7)V(η5-C5H4)] 4C6H2 has been prepared and structurally characterized. The isotropic EPR spectrum displays 29 a(51V) hyperfine lines, the intensity distribution slightly deviating from binomial. Exchange coupling therefore approaches the strong exchange limit, J ortho ≠ Jmeta ≠ Jpara, ≳50 a( 51V) with a(51V) = 0.0067 cm-1. According to magnetic susceptometry, the interaction is antiferromagnetic. While redox splittings δE1/2, are resolved for the four reduction steps this is not the case for oxidation.

AB - The organometallic tetraradical 1,2,4,5-[(η7-C 7H7)V(η5-C5H4)] 4C6H2 has been prepared and structurally characterized. The isotropic EPR spectrum displays 29 a(51V) hyperfine lines, the intensity distribution slightly deviating from binomial. Exchange coupling therefore approaches the strong exchange limit, J ortho ≠ Jmeta ≠ Jpara, ≳50 a( 51V) with a(51V) = 0.0067 cm-1. According to magnetic susceptometry, the interaction is antiferromagnetic. While redox splittings δE1/2, are resolved for the four reduction steps this is not the case for oxidation.

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DO - 10.1039/b418831b

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SN - 1359-7345

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JO - Chemical Communications

JF - Chemical Communications

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ER -

1,2,4,5-Tetra([5]trovacenyl)benzene: An organometallic tetraradical displaying pronounced electro- and magnetocommunication

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