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A manganese (II) dimer bearing the reduced derivatives of nitronyl nitroxides

A manganese (II) dimer bearing the reduced derivatives of nitronyl nitroxides
A manganese (II) dimer bearing the reduced derivatives of nitronyl nitroxides
We report the synthesis, magnetic EPR and conducting properties of a new manganese complex [MnII(hfac)2(IMHPhOPh)]2[MnII(hfac)3](IMH2PhOPh) (1), containing the reduced forms (IMHPhOPh and IMH2PhOPh) of the NIT-PhOPh radical (NIT-PhOPh = 2,4‘-benzoxo-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide). Magnetic susceptibility studies reveal the presence of weak antiferromagnetic exchange interactions between the metal ions, within the [MnII(hfac)2(IMHPhOPh)]2 unit. The EPR spectra of 1 exhibit simultaneous contributions of both the monomeric [MnII(hfac)3] and dimeric [MnII(hfac)2(IMHPhOPh)]2 species. Conductivity measurements shown that the electrical conduction of 1 is dominated by Ohm’s law, with a conductance value of S/cm.
0277-5387
Alexandropoulos, Dimitris I.
7420fb3c-44e8-4baf-8c83-611fd45391ba
Kong, Fanmiao
e73d5310-b6eb-4d55-9a07-fc2e7e09f3f4
Lombardi, Federico
9aea9d0f-2fb2-4451-9cab-383f2c3347d4
Horton, Peter
154c8930-bfc3-495b-ad4a-8a278d5da3a5
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Bogani, Lapo
eb0614bb-838e-4e7b-ac35-7e3098c8811b
Alexandropoulos, Dimitris I.
7420fb3c-44e8-4baf-8c83-611fd45391ba
Kong, Fanmiao
e73d5310-b6eb-4d55-9a07-fc2e7e09f3f4
Lombardi, Federico
9aea9d0f-2fb2-4451-9cab-383f2c3347d4
Horton, Peter
154c8930-bfc3-495b-ad4a-8a278d5da3a5
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Bogani, Lapo
eb0614bb-838e-4e7b-ac35-7e3098c8811b

Alexandropoulos, Dimitris I., Kong, Fanmiao, Lombardi, Federico, Horton, Peter, Coles, Simon J. and Bogani, Lapo (2021) A manganese (II) dimer bearing the reduced derivatives of nitronyl nitroxides. Polyhedron, 209. (doi:10.1016/j.poly.2021.115427).

Record type: Article

Abstract

We report the synthesis, magnetic EPR and conducting properties of a new manganese complex [MnII(hfac)2(IMHPhOPh)]2[MnII(hfac)3](IMH2PhOPh) (1), containing the reduced forms (IMHPhOPh and IMH2PhOPh) of the NIT-PhOPh radical (NIT-PhOPh = 2,4‘-benzoxo-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide). Magnetic susceptibility studies reveal the presence of weak antiferromagnetic exchange interactions between the metal ions, within the [MnII(hfac)2(IMHPhOPh)]2 unit. The EPR spectra of 1 exhibit simultaneous contributions of both the monomeric [MnII(hfac)3] and dimeric [MnII(hfac)2(IMHPhOPh)]2 species. Conductivity measurements shown that the electrical conduction of 1 is dominated by Ohm’s law, with a conductance value of S/cm.

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Polyhedron_MnNITPhOPh_revised_final - Accepted Manuscript
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Accepted/In Press date: 12 August 2021
e-pub ahead of print date: 18 August 2021
Additional Information: We acknowledge funding from the European Union (ERC-CoG-773048-MMGNRs), the Royal Society (University Research Fellow and URF grant), UK-EPSRC EP/L011972/1, EPSRC (Grant No. EP/N509711/1 and EP/R042594/1) and QuEEN grant (EP/N017188/1).

Identifiers

Local EPrints ID: 454682
URI: http://eprints.soton.ac.uk/id/eprint/454682
ISSN: 0277-5387
PURE UUID: cbf3c2ac-1b84-4c9f-b9fa-792f854553ff
ORCID for Peter Horton: ORCID iD orcid.org/0000-0001-8886-2016
ORCID for Simon J. Coles: ORCID iD orcid.org/0000-0001-8414-9272

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Date deposited: 21 Feb 2022 17:34
Last modified: 17 Mar 2024 07:06

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Contributors

Author: Dimitris I. Alexandropoulos
Author: Fanmiao Kong
Author: Federico Lombardi
Author: Peter Horton ORCID iD
Author: Simon J. Coles ORCID iD
Author: Lapo Bogani

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