Ferromagnetic interactions in metal complexes with imino nitroxides

H. Oshio; M. Yamamoto; N. Hoshino; T. Ito

doi:10.1016/S0277-5387(01)00663-5

Ferromagnetic interactions in metal complexes with imino nitroxides

H. Oshio, M. Yamamoto, N. Hoshino, T. Ito

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

15 Citations (Scopus)

Abstract

Copper(II), nickel(II), and zinc(II) complexes with tridentate imino nitroxyl diradicals, [CuCl(bisimpy)(MeOH)](PF₆) (1), [NiCl(bisimpy)(H₂O)₂]Cl·2H₂O (2), and [ZnCl₂(bisimpy)] (3) (bisimpy = 2,6-bis(1′-oxyl-4′,4′,5′,5′-tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were prepared and their magnetic properties studied. In 1-3 the diradicals are ferromagnetically coupled with the inter-radical coupling constant of J = + 6.5 cm^-1. In 1 and 2 the ferromagnetic interactions between the paramagnetic metal ions and the coordinated imino nitroxides are operative with the J values of + 165 and + 120 cm^-1 (H = -2J_ijΣS_iS_j), respectively. Magnetic properties of a Cu(II) complex with a mono radical ligand, [CuCl₂(impy)] (4) (impy = 2-(1′-oxyl-4′,4′,5′,5′tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were also studied; a ferromagnetic coupling constant of J = + 50(2) cm^-1 was obtained.

Original language	English
Pages (from-to)	1621-1625
Number of pages	5
Journal	Polyhedron
Volume	20
Issue number	11-14
DOIs	https://doi.org/10.1016/S0277-5387(01)00663-5
Publication status	Published - 2001 May 30
Externally published	Yes

Keywords

Ferromagnetic interactions
Imino nitroxides
Magnetic properties
Metal complexes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/S0277-5387(01)00663-5

Cite this

@article{7f1301851fe846f791875da1c1c2b422,

title = "Ferromagnetic interactions in metal complexes with imino nitroxides",

abstract = "Copper(II), nickel(II), and zinc(II) complexes with tridentate imino nitroxyl diradicals, [CuCl(bisimpy)(MeOH)](PF6) (1), [NiCl(bisimpy)(H2O)2]Cl·2H2O (2), and [ZnCl2(bisimpy)] (3) (bisimpy = 2,6-bis(1′-oxyl-4′,4′,5′,5′-tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were prepared and their magnetic properties studied. In 1-3 the diradicals are ferromagnetically coupled with the inter-radical coupling constant of J = + 6.5 cm-1. In 1 and 2 the ferromagnetic interactions between the paramagnetic metal ions and the coordinated imino nitroxides are operative with the J values of + 165 and + 120 cm-1 (H = -2JijΣSiSj), respectively. Magnetic properties of a Cu(II) complex with a mono radical ligand, [CuCl2(impy)] (4) (impy = 2-(1′-oxyl-4′,4′,5′,5′tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were also studied; a ferromagnetic coupling constant of J = + 50(2) cm-1 was obtained.",

keywords = "Ferromagnetic interactions, Imino nitroxides, Magnetic properties, Metal complexes",

author = "H. Oshio and M. Yamamoto and N. Hoshino and T. Ito",

note = "Funding Information: This work was supported in part by a Grant-in-aid for Scientific Research from the Ministry of Education, Science, and Culture, Japan.",

year = "2001",

month = may,

day = "30",

doi = "10.1016/S0277-5387(01)00663-5",

language = "English",

volume = "20",

pages = "1621--1625",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier Limited",

number = "11-14",

}

TY - JOUR

T1 - Ferromagnetic interactions in metal complexes with imino nitroxides

AU - Oshio, H.

AU - Yamamoto, M.

AU - Hoshino, N.

AU - Ito, T.

N1 - Funding Information: This work was supported in part by a Grant-in-aid for Scientific Research from the Ministry of Education, Science, and Culture, Japan.

PY - 2001/5/30

Y1 - 2001/5/30

N2 - Copper(II), nickel(II), and zinc(II) complexes with tridentate imino nitroxyl diradicals, [CuCl(bisimpy)(MeOH)](PF6) (1), [NiCl(bisimpy)(H2O)2]Cl·2H2O (2), and [ZnCl2(bisimpy)] (3) (bisimpy = 2,6-bis(1′-oxyl-4′,4′,5′,5′-tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were prepared and their magnetic properties studied. In 1-3 the diradicals are ferromagnetically coupled with the inter-radical coupling constant of J = + 6.5 cm-1. In 1 and 2 the ferromagnetic interactions between the paramagnetic metal ions and the coordinated imino nitroxides are operative with the J values of + 165 and + 120 cm-1 (H = -2JijΣSiSj), respectively. Magnetic properties of a Cu(II) complex with a mono radical ligand, [CuCl2(impy)] (4) (impy = 2-(1′-oxyl-4′,4′,5′,5′tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were also studied; a ferromagnetic coupling constant of J = + 50(2) cm-1 was obtained.

AB - Copper(II), nickel(II), and zinc(II) complexes with tridentate imino nitroxyl diradicals, [CuCl(bisimpy)(MeOH)](PF6) (1), [NiCl(bisimpy)(H2O)2]Cl·2H2O (2), and [ZnCl2(bisimpy)] (3) (bisimpy = 2,6-bis(1′-oxyl-4′,4′,5′,5′-tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were prepared and their magnetic properties studied. In 1-3 the diradicals are ferromagnetically coupled with the inter-radical coupling constant of J = + 6.5 cm-1. In 1 and 2 the ferromagnetic interactions between the paramagnetic metal ions and the coordinated imino nitroxides are operative with the J values of + 165 and + 120 cm-1 (H = -2JijΣSiSj), respectively. Magnetic properties of a Cu(II) complex with a mono radical ligand, [CuCl2(impy)] (4) (impy = 2-(1′-oxyl-4′,4′,5′,5′tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were also studied; a ferromagnetic coupling constant of J = + 50(2) cm-1 was obtained.

KW - Ferromagnetic interactions

KW - Imino nitroxides

KW - Magnetic properties

KW - Metal complexes

UR - http://www.scopus.com/inward/record.url?scp=0035972482&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035972482&partnerID=8YFLogxK

U2 - 10.1016/S0277-5387(01)00663-5

DO - 10.1016/S0277-5387(01)00663-5

M3 - Article

AN - SCOPUS:0035972482

SN - 0277-5387

VL - 20

SP - 1621

EP - 1625

JO - Polyhedron

JF - Polyhedron

IS - 11-14

ER -

Ferromagnetic interactions in metal complexes with imino nitroxides

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this