Strong ferromagnetic exchange couplings in copper(II) and nickel(II) complexes with a paramagnetic tridentate chelate ligand, 2,2′-bipyridin-6- yl tert-butyl nitroxide

Keita Osanai; Atsushi Okazawa; Takashi Nogami; Takayuki Ishida

doi:10.1021/ja065623c

Strong ferromagnetic exchange couplings in copper(II) and nickel(II) complexes with a paramagnetic tridentate chelate ligand, 2,2′-bipyridin-6- yl tert-butyl nitroxide

Keita Osanai, Atsushi Okazawa, Takashi Nogami, Takayuki Ishida^*

^*Corresponding author for this work

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

70 Citations (Scopus)

Abstract

A paramagnetic ligand 6bpyNO (2,2′-bipyridin-6-yl tert-butyl nitroxide) is a newcomer in the field of metal-radical hybrid magnetic materials. Complexes [Cu^II(6bpyNO)Cl₂] and [Ni^II(6bpyNO)₂](PF₆)₂ having highly planar chelate rings showed considerably strong ferromagnetic exchange couplings J/k_B = 202 and 192 K, respectively, across the direct radical oxygen coordination bonds (the spin Hamiltonian is defined as -2JS_i·S_j).

Original language	English
Pages (from-to)	14008-14009
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	128
Issue number	43
DOIs	https://doi.org/10.1021/ja065623c
Publication status	Published - 2006 Nov 1
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja065623c

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Strong ferromagnetic exchange couplings in copper(II) and nickel(II) complexes with a paramagnetic tridentate chelate ligand, 2,2′-bipyridin-6- yl tert-butyl nitroxide. / Osanai, Keita; Okazawa, Atsushi; Nogami, Takashi et al.

In: Journal of the American Chemical Society, Vol. 128, No. 43, 01.11.2006, p. 14008-14009.

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

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title = "Strong ferromagnetic exchange couplings in copper(II) and nickel(II) complexes with a paramagnetic tridentate chelate ligand, 2,2′-bipyridin-6- yl tert-butyl nitroxide",

abstract = "A paramagnetic ligand 6bpyNO (2,2′-bipyridin-6-yl tert-butyl nitroxide) is a newcomer in the field of metal-radical hybrid magnetic materials. Complexes [CuII(6bpyNO)Cl2] and [NiII(6bpyNO)2](PF6)2 having highly planar chelate rings showed considerably strong ferromagnetic exchange couplings J/kB = 202 and 192 K, respectively, across the direct radical oxygen coordination bonds (the spin Hamiltonian is defined as -2JSi·Sj).",

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AU - Osanai, Keita

AU - Okazawa, Atsushi

AU - Nogami, Takashi

AU - Ishida, Takayuki

PY - 2006/11/1

Y1 - 2006/11/1

N2 - A paramagnetic ligand 6bpyNO (2,2′-bipyridin-6-yl tert-butyl nitroxide) is a newcomer in the field of metal-radical hybrid magnetic materials. Complexes [CuII(6bpyNO)Cl2] and [NiII(6bpyNO)2](PF6)2 having highly planar chelate rings showed considerably strong ferromagnetic exchange couplings J/kB = 202 and 192 K, respectively, across the direct radical oxygen coordination bonds (the spin Hamiltonian is defined as -2JSi·Sj).

AB - A paramagnetic ligand 6bpyNO (2,2′-bipyridin-6-yl tert-butyl nitroxide) is a newcomer in the field of metal-radical hybrid magnetic materials. Complexes [CuII(6bpyNO)Cl2] and [NiII(6bpyNO)2](PF6)2 having highly planar chelate rings showed considerably strong ferromagnetic exchange couplings J/kB = 202 and 192 K, respectively, across the direct radical oxygen coordination bonds (the spin Hamiltonian is defined as -2JSi·Sj).

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Strong ferromagnetic exchange couplings in copper(II) and nickel(II) complexes with a paramagnetic tridentate chelate ligand, 2,2′-bipyridin-6- yl tert-butyl nitroxide

Abstract

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