Magneto-structural correlations in layered molecular magnets based on metal complexes with 3- imidazoline nitroxides

Ovcharenko, V. V.; Ikorskiǐ, V. N.; Романенко, Г. В.; Sagdeev, R. Z.; Panthou, Fabrice Lanfranc de; Rey, P.

doi:10.1016/s0379-6779(97)80380-3

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…O•−N<} hydrogen bonds with two adjacent {RO H -ML 2-H OR} fragments. As a result, the bridging molecules of alcohols link the {ML 2 } fragments into polymer layers; that is, the 2-D structure is formed by hydrogen bonds, 123,124 which can be treated as a certain analogy to the formation of complex protein structures.…”

Section: Molecular Magnets Based On 2-d Systemsmentioning

confidence: 99%

Metal–Nitroxide Complexes: Synthesis and Magnetostructural Correlations

Овчаренко¹

2010

Stable Radicals

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IntroductionInteractions between the paramagnetic ions of transition metals and stable radicals are convenient and effective methods for the synthesis of multispin molecules. These metal-nitroxide systems are often called heterospin systems because they contain paramagnetic centers with both d (or f) odd electrons and centers with p electrons. Paramagnetic centers can differ in the electron spin, g factor, the character of electron spin density delocalization, and heat capacity. The presence of several paramagnetic centers in heterospin molecules has stirred growing interest in their magnetic properties because these compounds are convenient objects for studying the subtle peculiarities of exchange interactions and revealing valuable magnetostructural correlations. That is why coordination chemistry of transition metals with stable nitroxides is an actively developing direction in modern chemistry that contributes to problem solving in the field of molecular magnetism. The results of studies on the synthesis and properties of metal complexes with nitroxides have been considered from different viewpoints and at different times in many monographs and reviews. 1 -19 Importantly, this approach offers the potential for control over the structure of the designed heterospin molecule and the character of interactions between the odd electrons of paramagnetic centers, which is necessary for constructing justifiable magnetostructural correlations. This is one of the factors responsible for the continuous growth of the number of new metal-nitroxide complexes. The Cambridge Structural Database alone contains more than one thousand structurally defined metal-nitroxide systems. 20 Therefore, currently it is impossible and not necessary to collect all available literature data on the synthesis and properties of metal-nitroxide systems in one publication. In any account, a comprehensive review of this kind will already have become incomplete by the time of its publication because new heterospin compounds based on transition metal compounds with nitroxides are being added daily to the list. However, the Stable Radicals: Fundamentals and Applied Aspects of Odd-Electron CompoundsEdited by Robin G. Hicks

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Section: Molecular Magnets Based On 2-d Systemsmentioning

confidence: 99%

Metal–Nitroxide Complexes: Synthesis and Magnetostructural Correlations

Овчаренко¹

2010

Stable Radicals

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“…72,260 In the case where the acceptor ability of a metal ion attained only due to the introduction of an electrophilic substituent R 1 is insufficient to implement a two-dimensional solid state structure, the introduction of additional acceptor groups, for example, halogen atoms, as the substituent R 2 is effective. 253 In the examples of heterospin complexes discussed above, the 3-imidazoline nitroxyl radical plays the role of a tridentate bridge. Recently, heterospin layered polymers with deprotonated nitronyl nitroxyl radicals (NIT) containing an imidazole (Im) or benzoimidazole (BzIm) substituent at position 2 of the paramagnetic heterocycle were described.…”

Section: O7nmentioning

confidence: 99%