Novel mononuclear Ln complexes with pyrazine2-carboxylate and acetylacetonate co-ligands: remarkable single molecule magnet behavior of a Yb derivative

Gavrikov Andrey V.; Efimov Nikolay N.; Dobrokhotova Zhanna V.; Ilyukhin Andrey B.; Vasilyev Pavel N.; Novotortsev Vladimir M.

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Novel mononuclear Ln complexes with pyrazine2-carboxylate and acetylacetonate co-ligands: remarkable single molecule magnet behavior of a Yb derivative

机译：具有吡嗪2-羧酸甲酸酯和乙酰丙酮的共配体的新型单核LN复合物：YB衍生物的非分子磁体行为

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A series of novel isomorphic mononuclear complexes [Ln(PyrCOO)(acac)(2)(H2O)(2)] (Ln = Eu (1), Gd (2), Tb (3), Dy (4), Ho (5), Er (6), Tm (7), Yb (8), Y(9); acac(-) -acetylacetonate (pentane-2,4-dionate) anion, PyrCOOH is pyrazine-2-carboxylic acid) were prepared. Slow magnetic relaxation indicating SMM behavior was found in complexes 3, 4, 6 and 8. For 4 (Dy), the anisotropy barrier is Delta(eff) /k(B) = 77 K under a dc field of 1500 Oe. For 8 (Yb), the anisotropy barrier is Delta(eff) /kB = 54 K under a dc field of 2000 Oe which is the highest presently known value for molecular Yb carboxylate complexes and for Yb molecular complexes in general.

机译：一系列新的同构单核复合物[LN（PyrCOO）（ACAC）（2）（2）（2）（2）（2），Gd（2），TB（3），Dy（4），HO（ 5），ER（6），Tm（7），Yb（8），Y（9）; Acac（ - ） - 乙酰丙酮（戊烷-2,4-致乙酯）阴离子，吡苯是吡嗪-2-羧酸）准备好了。在复合物3,4,6和8中发现了表明SMM行为的缓慢磁性松弛。对于4（Dy），各向异性屏障是在1500 OE的DC场下的δ（Eff）/ K（b）= 77k。对于8（Yb），各向异性屏障是在2000 OE的DC场下的δ（EFF）/ Kb = 54k，其是分子YB羧酸盐配合物的最高可知的值，并且通常是Yb分子复合物。

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《Dalton transactions: An international journal of inorganic chemistry》 |2017年第35期|共11页
作者
Gavrikov Andrey V.; Efimov Nikolay N.; Dobrokhotova Zhanna V.; Ilyukhin Andrey B.; Vasilyev Pavel N.; Novotortsev Vladimir M.;
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Russian Acad Sci NS Kurnakov Inst Gen &

Inorgan Chem Leninsky Prosp 31 Moscow 119991 Russia;

Russian Acad Sci NS Kurnakov Inst Gen &

Inorgan Chem Leninsky Prosp 31 Moscow 119991 Russia;

Russian Acad Sci NS Kurnakov Inst Gen &

Inorgan Chem Leninsky Prosp 31 Moscow 119991 Russia;

Russian Acad Sci NS Kurnakov Inst Gen &

Inorgan Chem Leninsky Prosp 31 Moscow 119991 Russia;

Russian Acad Sci NS Kurnakov Inst Gen &

Inorgan Chem Leninsky Prosp 31 Moscow 119991 Russia;

Russian Acad Sci NS Kurnakov Inst Gen &

Inorgan Chem Leninsky Prosp 31 Moscow 119991 Russia;

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中图分类化学;无机化学;
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机译：具有吡嗪2-羧酸甲酸酯和乙酰丙酮的共配体的新型单核LN复合物：YB衍生物的非分子磁体行为
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Novel mononuclear Ln complexes with pyrazine2-carboxylate and acetylacetonate co-ligands: remarkable single molecule magnet behavior of a Yb derivative

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