journal article·2007-05-01

tert-Butyl 2-Pyridyl Nitroxide Available as a Paramagnetic Chelate Ligand for Strongly Exchange-Coupled Metal−Radical Compounds

Atsushi Okazawa, Takashi Nogami, Takayuki Ishida

Chemistry of Materials· Volume 19· Issue 11
Publisher page

Abstract

An unstable organic free radical 2pyNO (tert-butyl 2-pyridyl nitroxide) was trapped with transition-metal ions, giving stable metal−radical compounds. Complex [NiII(2pyNO)2(H2O)2]·(ClO4)2 showed intramolecular strong ferromagnetic coupling (J/kB = +126(3) K), while [CuII(2pyNO)2(ClO4)2] showed antiferromagnetic coupling (J/kB = −137(1) K; the spin-Hamiltonian is defined as H = −2JSA·SB).
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Magnetism in coordination complexes · Lanthanide and Transition Metal Complexes · Electron Spin Resonance Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Applied Physics and Chemistry and Course of Coherent Optical Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan

References (31)

Show source-provided references
1. Caneschi A. · Acc. Chem. Res. · 1989 · 22 · 39210.1021/ar00167a004 ↗
2. Manriquez J. M. · Science · 1991 · 252 · 141510.1126/science.252.5011.1415 ↗
3. Inoue K. · J. Am. Chem. Soc. · 1996 · 118 · 180310.1021/ja952301s ↗
4. Ise T. · Inorg. Chem. · 2003 · 42 · 610610.1021/ic034392x ↗
5. Romero F. M. · Chem. Commun. · 1998 · 55110.1039/a707350j ↗
6. Luneau D. · Inorg. Chem. · 1993 · 32 · 561610.1021/ic00076a032 ↗
7. Aoki C. · Inorg. Chem. · 2003 · 42 · 761610.1021/ic0349048 ↗
8. Luneau D. · J. Am. Chem. Soc. · 1991 · 113 · 124510.1021/ja00004a026 ↗
9. Luneau D. · Inorg. Chem. · 1992 · 31 · 357810.1021/ic00043a018 ↗
10. Hicks R. G. · J. Am. Chem. Soc. · 2000 · 122 · 807710.1021/ja001627k ↗
11. Barclay T. M. · Chem. Commun. · 2000 · 214110.1039/b006520j ↗
12. Hearns N. G. R. · J. Am. Chem. Soc. · 2004 · 126 · 994210.1021/ja046304t ↗
13. Jennings M. · Chem. Commun. · 2006 · 34110.1039/B512312G ↗
14. Keana J. F. W. · Chem. Rev. · 1978 · 78 · 3710.1021/cr60311a004 ↗
15. Osanai K. · J. Am. Chem. Soc. · 2006 · 128 · 1400810.1021/ja065623c ↗
16. Ise T. · Bull. Chem. Soc. Jpn. · 2002 · 75
17. Ise T. · Mol. Cryst. Liq. Cryst. · 2002 · 379 · 14710.1080/713738643 ↗
18. Kitano M. · Inorg. Chem. · 1994 · 33 · 601210.1021/ic00104a008 ↗
19. Fischer H. · Adv. Organomet. Chem. · 1999 · 43 · 12510.1016/S0065-3055(08)60670-X ↗
20. Gruber S. J. · J. Chem. Phys. · 1968 · 49 · 218310.1063/1.1670383 ↗
21. Jotham R. W. · J. Chem. Soc., Faraday Trans. 2 · 1976 · 12510.1039/F29767200125 ↗
22. Frisch M. J. · 2004
23. Kahn O. · Inorg. Chem. · 1987 · 26 · 355710.1021/ic00268a028 ↗
24. Iwamura H. · Adv. Phys. Org. Chem. · 1990 · 26 · 179
25. Rajca A. · Chem. Rev. · 1994 · 94 · 87110.1021/cr00028a002 ↗
26. Ishida T. · J. Am. Chem. Soc. · 1991 · 113 · 423810.1021/ja00011a028 ↗
27. Bondi A. · J. Phys. Chem. · 1964 · 68 · 44110.1021/j100785a001 ↗
28. McConnell H. M. · J. Chem. Phys. · 1963 · 39 · 191010.1063/1.1734562 ↗
29. Imachi R. · Chem. Lett. · 1997 · 74310.1246/cl.1997.743 ↗
30. Zheludev A. · J. Am. Chem. Soc. · 1994 · 116 · 201910.1021/ja00084a048 ↗
31. Awaga K. · Chem. Phys. Lett. · 1992 · 190 · 34910.1016/0009-2614(92)85350-J ↗