Intramolecular magnetic interaction of phenylene-linked bis-β-diketone metal complexes

Chemistry Letters

Volumn , Issue 7, 2000, Pages 812-813

  Matsushita, Michio M ^a,b   Yasuda, Tomohiro ^a   Kawano, Ryuji ^a   Kawai, Tadashi ^a   Iyoda, Tomokazu ^a  

^a TOKYO METROPOLITAN UNIVERSITY   (Japan)

^b JAPAN SCIENCE AND TECHNOLOGY AGENCY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0034339602     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2000.812     Document Type: Article

References (20)

1. J.-M. Lehn, "Supramolecular Chemistry", VCH Publishers, Inc., Weinhelm (1995).
2. "Magnetic Properties of Organic Materials", ed. by P. M. Lahti, Marcel Dekker, Inc., New York (1999).
3. The β-diketone dimers, 1 and 2, were prepared from dimethylphthalate isomers and acetophenone by Claisen condensation: D. F. Martin, M. Shamma, and W. C. Fernelius, J. Am. Chem. Soc., 80, 4891 (1958).
4. A few crystallographic studies on a series of dinuclear metal complexes based on the identical bis-β-diketone ligands have been reported, but no information on the electronic interaction was given: V. A. Grillo, E. J. Seddon, C. M. Grant, G. Aromí, J. C. Bollinger, K. Folting, and G. Christou, J. Chem. Soc., Chem. Commun., 1997, 1561.
5. Only enol-type tautomer exists in benzene solution.
6. -1.
7. -1. (2) The red-shift of the C=O stretching band (3) The appearance of the Metal-O stretching band in a far-infrared region.
8. 2, was reported as one of polymorphism. The Mn(III), Ti(III), and V(III) complexes were also reported: see Ref. 4.
9. The dinuclear model with isotropic antiferromagnetic intermolecular interaction: O. Kahn, "Molecular Magnetism," VCH Publishers, Inc., New York (1993).
10. N. Mataga, Theor. Chim. Acta, 10, 372 (1968); A. A. Ovchinnikov, Theoret. Chim. Acta. 108, 368 (1986); A. Rajca, Chem. Rev., 94, 871 (1994).
11. N. Mataga, Theor. Chim. Acta, 10, 372 (1968); A. A. Ovchinnikov, Theoret. Chim. Acta. 108, 368 (1986); A. Rajca, Chem. Rev., 94, 871 (1994).
12. N. Mataga, Theor. Chim. Acta, 10, 372 (1968); A. A. Ovchinnikov, Theoret. Chim. Acta. 108, 368 (1986); A. Rajca, Chem. Rev., 94, 871 (1994).
13. The drawing in Figure 4 stands on the spin polarization mechanism, well-established in the phenylene linkers. Although the spin alternation on the aromatic system might be influenced through intervening heteroatoms, it dose not influence the whole metal-metal interaction in these dinuclear complexes, because the structural symmetry found in the dinuclear complexes gives the consistent result on the whole melal-to-metal interaction.
14. G. De Munno, M. Julve, F. Lloret, J. Cano, and A. Caneschi, Inorg. Chem., 34, 2048 (1995); E. Andrés, G. De Munno, M. Julve, J. A. Real, and F. Lloret, J. Chem. Soc. Dalton Trans., 1993, 2169; J. A. Real, J. Zarembowitch, O. Kahn, and X. Solans, Inorg. Chem., 26, 2939 (1987); G. De Munno, R. Ruiz, F. Lloret, J. Faus, R. Sessoli, and M. Julve, Inorg. Chem., 34, 408 (1995); G. De Munno, M. Julve, F. Lloret, and A. Derory, J. Chem. Soc., Dalton Trans., 1993, 1179.
15. G. De Munno, M. Julve, F. Lloret, J. Cano, and A. Caneschi, Inorg. Chem., 34, 2048 (1995); E. Andrés, G. De Munno, M. Julve, J. A. Real, and F. Lloret, J. Chem. Soc. Dalton Trans., 1993, 2169; J. A. Real, J. Zarembowitch, O. Kahn, and X. Solans, Inorg. Chem., 26, 2939 (1987); G. De Munno, R. Ruiz, F. Lloret, J. Faus, R. Sessoli, and M. Julve, Inorg. Chem., 34, 408 (1995); G. De Munno, M. Julve, F. Lloret, and A. Derory, J. Chem. Soc., Dalton Trans., 1993, 1179.
16. G. De Munno, M. Julve, F. Lloret, J. Cano, and A. Caneschi, Inorg. Chem., 34, 2048 (1995); E. Andrés, G. De Munno, M. Julve, J. A. Real, and F. Lloret, J. Chem. Soc. Dalton Trans., 1993, 2169; J. A. Real, J. Zarembowitch, O. Kahn, and X. Solans, Inorg. Chem., 26, 2939 (1987); G. De Munno, R. Ruiz, F. Lloret, J. Faus, R. Sessoli, and M. Julve, Inorg. Chem., 34, 408 (1995); G. De Munno, M. Julve, F. Lloret, and A. Derory, J. Chem. Soc., Dalton Trans., 1993, 1179.
17. G. De Munno, M. Julve, F. Lloret, J. Cano, and A. Caneschi, Inorg. Chem., 34, 2048 (1995); E. Andrés, G. De Munno, M. Julve, J. A. Real, and F. Lloret, J. Chem. Soc. Dalton Trans., 1993, 2169; J. A. Real, J. Zarembowitch, O. Kahn, and X. Solans, Inorg. Chem., 26, 2939 (1987); G. De Munno, R. Ruiz, F. Lloret, J. Faus, R. Sessoli, and M. Julve, Inorg. Chem., 34, 408 (1995); G. De Munno, M. Julve, F. Lloret, and A. Derory, J. Chem. Soc., Dalton Trans., 1993, 1179.
18. G. De Munno, M. Julve, F. Lloret, J. Cano, and A. Caneschi, Inorg. Chem., 34, 2048 (1995); E. Andrés, G. De Munno, M. Julve, J. A. Real, and F. Lloret, J. Chem. Soc. Dalton Trans., 1993, 2169; J. A. Real, J. Zarembowitch, O. Kahn, and X. Solans, Inorg. Chem., 26, 2939 (1987); G. De Munno, R. Ruiz, F. Lloret, J. Faus, R. Sessoli, and M. Julve, Inorg. Chem., 34, 408 (1995); G. De Munno, M. Julve, F. Lloret, and A. Derory, J. Chem. Soc., Dalton Trans., 1993, 1179.
19. F. Lloret, M. Julve, J. Faus, X. Solans, Y. Journaux, and I. Morgenstern-Badarau, Inorg. Chem. 29, 2232 (1990).
20. The spin polarization along the phenylene linker also varies as a function of the dihedral angle between the adjacent π-conjugated planes, according to the Karplus's relationship: A. Izuoka, M. Fukada, R. Kumai, M. Itakura, S. Hikami, and T. Sugawara, J. Am. Chem. Soc., 116, 2609 (1994).