Magnets, molecular-based

M. Verdaguer. Measurement of magnetic moment at the atomic scale in a high molecular based magnet. J. Phys. Chem. 100 4679 (1996 ). 

E. Dartyge, and A. Fontaine. K edge x-ray magnetic circular dichroism in molecular based magnets. Physica B 208 209 765 (1995). 

Magnetism of Heterobimetallics Toward Molecular-Based Magnets Olivier Kahn... 

Co(II)Cu(II) 2D molecular-based magnets with large coercive fields, 43 204-205... 

Mn(ll)Cu(II) magnets, 43 253 molecular-based magnet, three spin carriers with full interlocked structure, 43 199, 201-204 Ni(II)Cu(II)binuclear and... 

Organic bulk ferromagnetism was discovered in 1991 [3]. There has been enormous progress in the design and synthesis of molecular-based magnetic... 

Magnetism of HeterobimetalUcs Toward Molecular-Based Magnets... 

Basic theoretical concepts of exchange will be developed in this article. Useful theoretical models invented for the rationalization of the results will be described and their use illustrated by descriptions of extended arrays, principally onedimensional for simplicity. The development of molecular-based magnetism over the past 15 years has been particularly rapid, so emphasis is given to the use of molecular units in... 

Thallium derivatives of the tetracyanoethylene system are of interest as reagents for the introduction of TCNE] and [TCNE] (useful in the preparation of molecular-based magnets) via a halide- abstraction... 

Besides the electrical conductivity, a number of other applications of [M(dmit)2] have been investigated. For example, molecular-based magnets, such as the spin ladder compound p-EPYNN][Ni(dmit)2] [p-FFYNN]" " = p-N-ethylpyridinium a-nitronyl nitroxide) was reported in 1996. In the crystal, the radical cationic molecules, p-EPYNN, form one-dimensional chains with ferromagnetic interactions, while the chains of [Ni(dmit)2] monovalent anions, in a ladder formation, exhibit antiferromagnetic interactions. The magnetisation is explained by the sum of them. 

MAGNETISM OF HETEROBIMETALLICS TOWARD MOLECULAR-BASED MAGNETS... 

A Molecular-Based Magnet Containing Three Spin Carriers with a Fully Interlocked Structure... 

CodDCudll Two-Dimensional Molecular-Based Magnets with Large Coercive Fields... 

In 1987 we published the first review on the magnetism of heteropoly-metallic systems (3). This article was largely devoted to the mechanism of the interaction in heterobinuclear complexes. The field of heteropoly-metallic compounds was covered up to the first attempts to obtain molecular-based magnets. The very last sentence of this article was One may anticipate that in a few years another review will be necessary, and that its main emphasis will be on systems of higher nuclearity and extended systems with subtle spin orders. In the present case, our prediction was quite correct, which is not so frequent in science. The field of heterobimetallic systems has developed tremendously since 1987, particularly in relation to the synthesis of molecular-based magnets. It is now timely to write a second review concerning this topic. 

The first oxamato-bridged compounds were mentioned in the review article of 1987 (3). Since then, quite a few other compounds have been described, including several molecular-based magnets. All those compounds were synthesized from the copper(II) precursors [Cu(pba)], [Cu(pbaOH)] , and [Cu(opba)] shown in Fig. 2 pba stands for 1,3-propylenebis(oxamato), pbaOH stands for 2-hydroxy-1,3-propylene-bis(oxamato), and opba stands for or /io-phenylenebis(oxamato). 

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