Abstract
Reactions between Cu(hfac)2 and nitronyl nitroxide biradicals 1,4-bis[4-(4,4,5,5-tetramethyl-3-oxide-1-oxyl-4,5-dihydro-1H-imidazol-2-yl) pyrazol-1-yl]butane (L4) and 1,8-bis[4-(4,4,5,5-tetramethyl-3-oxide- 1-oxyl-4,5-dihydro-1H-imidazol-2-yl)pyrazol-1-yl]octane (L8) gave respectively a framework compound [Cu(hfac)2]2L 4 and a layered polymer compound [Cu(hfac)2] 2L8. The framework of [Cu(hfac)2] 2L4 consists of 66-membered condensed metallocycles. Inside the framework, the structure has macrohelixes (pitch ∼25 Å) extending along the [001] crystallographic direction. All the helixes have the same direction of winding; the crystals, therefore, are optically active, the structure corresponding either to P-isomer (P41212) or to M-isomer (P43212). The long distances between the Cu atoms and the O atoms of the coordinated >N-O groups (Cu-O 2.351-2.467 Å) are responsible for ferromagnetic exchange interactions in Cu 2+-O-.N< and >N-.O-Cu2+-O- .N< exchange clusters.
| Original language | English |
|---|---|
| Pages (from-to) | 3671-3678 |
| Number of pages | 8 |
| Journal | Inorganic Chemistry |
| Volume | 45 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 May 2006 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
Cite this
2D and 3D Cu(hfac)2 complexes with nitronyl nitroxide biradicals. / Tretyakov, Eugene; Fokin, Sergei; Romanenko, Galina; Ikorskii, Vladimir; Vasilevsky, Sergei; Ovcharenko, Victor.
In: Inorganic Chemistry, Vol. 45, No. 9, 01.05.2006, p. 3671-3678.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - 2D and 3D Cu(hfac)2 complexes with nitronyl nitroxide biradicals
AU - Tretyakov, Eugene
AU - Fokin, Sergei
AU - Romanenko, Galina
AU - Ikorskii, Vladimir
AU - Vasilevsky, Sergei
AU - Ovcharenko, Victor
PY - 2006/5/1
Y1 - 2006/5/1
N2 - Reactions between Cu(hfac)2 and nitronyl nitroxide biradicals 1,4-bis[4-(4,4,5,5-tetramethyl-3-oxide-1-oxyl-4,5-dihydro-1H-imidazol-2-yl) pyrazol-1-yl]butane (L4) and 1,8-bis[4-(4,4,5,5-tetramethyl-3-oxide- 1-oxyl-4,5-dihydro-1H-imidazol-2-yl)pyrazol-1-yl]octane (L8) gave respectively a framework compound [Cu(hfac)2]2L 4 and a layered polymer compound [Cu(hfac)2] 2L8. The framework of [Cu(hfac)2] 2L4 consists of 66-membered condensed metallocycles. Inside the framework, the structure has macrohelixes (pitch ∼25 Å) extending along the [001] crystallographic direction. All the helixes have the same direction of winding; the crystals, therefore, are optically active, the structure corresponding either to P-isomer (P41212) or to M-isomer (P43212). The long distances between the Cu atoms and the O atoms of the coordinated >N-O groups (Cu-O 2.351-2.467 Å) are responsible for ferromagnetic exchange interactions in Cu 2+-O-.N< and >N-.O-Cu2+-O- .N< exchange clusters.
AB - Reactions between Cu(hfac)2 and nitronyl nitroxide biradicals 1,4-bis[4-(4,4,5,5-tetramethyl-3-oxide-1-oxyl-4,5-dihydro-1H-imidazol-2-yl) pyrazol-1-yl]butane (L4) and 1,8-bis[4-(4,4,5,5-tetramethyl-3-oxide- 1-oxyl-4,5-dihydro-1H-imidazol-2-yl)pyrazol-1-yl]octane (L8) gave respectively a framework compound [Cu(hfac)2]2L 4 and a layered polymer compound [Cu(hfac)2] 2L8. The framework of [Cu(hfac)2] 2L4 consists of 66-membered condensed metallocycles. Inside the framework, the structure has macrohelixes (pitch ∼25 Å) extending along the [001] crystallographic direction. All the helixes have the same direction of winding; the crystals, therefore, are optically active, the structure corresponding either to P-isomer (P41212) or to M-isomer (P43212). The long distances between the Cu atoms and the O atoms of the coordinated >N-O groups (Cu-O 2.351-2.467 Å) are responsible for ferromagnetic exchange interactions in Cu 2+-O-.N< and >N-.O-Cu2+-O- .N< exchange clusters.
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U2 - 10.1021/ic060132e
DO - 10.1021/ic060132e
M3 - Article
VL - 45
SP - 3671
EP - 3678
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 9
ER -