Aggregation of [Ln(12)(III)] clusters by the dianion of 3-formylsalicylic acid. Synthesis, crystal structures, magnetic and luminescence properties

Dinca Alina S.; Mindru Alexei; Dragancea Diana; Tiseanu Carmen; Shova Sergiu; Cornia Samuele; Carrella Luca M.; Rentschler Eva; Affronte Marco; Andruh Marius

首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Aggregation of [Ln(12)(III)] clusters by the dianion of 3-formylsalicylic acid. Synthesis, crystal structures, magnetic and luminescence properties

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Aggregation of [Ln(12)(III)] clusters by the dianion of 3-formylsalicylic acid. Synthesis, crystal structures, magnetic and luminescence properties

机译：通过3-甲酰基羟基丙烯酸的Dianion聚集[LN（12）（III）]簇的聚集。合成，晶体结构，磁性和发光性能

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Three isostrucutral dodecanuclear clusters with the general formula [Ln(12)(fsa)(12)(mu f(3)-OH)(12)(DMF)(12)]center dot nDMF (fsa(2-) is the dianion of 3-formylsalicylic acid; Ln = Eu 1, Gd 2, Dy 3) have been obtained from the reaction of fromylsalicyclic acid (H(2)fsa), tetrabutylammonium hydroxide and Ln(NO3)(3)center dot 6H(2)O in methanol/DMF. Their structure consists of four vertex-sharing heterocubanes. Each heterocubane unit is assembled from four Ln(III) ions, three mu(3)-OH groups and one mu(3)-oxygen atom arising from the fsa(2-) carboxylato group. The photophysical properties of the europium derivative investigated at both 300 and 80 K sustain a relative intense emission obtained under low power LED excitation at 420 nm. The dysprosium derivative shows a SMM behavior with an effective energy barrier U-eff of 22.9 cm(-1), while the thermodynamical properties of Gd-12 confirm a large magnetocaloric effect: S(7 T) -S(0 T) = 20R = 166 J mol(-1) K), typical for isotropic Gd-III derivatives, with Delta S = S(7 T) - S(0 T) = 1.7R for each Gd-III ion.

机译：具有通式[LN（12）（FSA）（12）（MU F（3）-OH）（12）（DMF）（12）]中心点NDMF（FSA（2-）是Dianion的三种异位疏水核簇簇来自3-甲酰基羟基丙烯酸; LN = EU 1，GD 2，DY 3）是从巯基己酸（H（2）FSA），四丁基铵和LN（NO 3）（3）中央点6H（2）的反应中获得的o在甲醇/ DMF中。它们的结构由四个顶点共享异质铝制成。每个杂烷单元由来自FSA（2-）羧酸盐基团引起的四个LN（III）离子，三种（3）-OH基团和一组 - 氧基原子组装。在300和80K上研究的铕衍生物的光学性质在420nm处在低功率LED激发下获得的相对强烈的排放。镝衍生物显示出具有22.9cm（-1）的有效能量屏障U-eff的SMM行为，而GD-12的热力学性能确认了大的磁热效应：S（7t）-s（0 t）= 20r = 166 J mol（-1）k），用于各向同性Gd-III衍生物的典型，具有ΔS= s（7t） - s（0 t）= 1.7r，每个GD-III离子。

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《Dalton transactions: An international journal of inorganic chemistry》 |2019年第5期|共9页
作者
Dinca Alina S.; Mindru Alexei; Dragancea Diana; Tiseanu Carmen; Shova Sergiu; Cornia Samuele; Carrella Luca M.; Rentschler Eva; Affronte Marco; Andruh Marius;
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作者单位

Univ Bucharest Inorgan Chem Lab Fac Chem Str Dumbrava Rosie 23 Bucharest 020464 Romania;

Inst Chem Str Acad 3 Kishinev Moldova;

Inst Chem Str Acad 3 Kishinev Moldova;

Natl Inst Laser Plasma &

Radiat Phys Lab Solid State Quantum Elect POB MG-36 Magurele 077125 Romania;

Petru Poni Inst Macromol Chem Aleea Grigore Ghica Voda 41A RO-700487 Iasi Romania;

Univ Modena &

Reggio Emilia CNR Inst NanoSci S3 Via G Campi 213-A I-41100 Modena Italy;

Johannes Gutenberg Univ Mainz Inst Inorgan &

Analyt Chem Duesbergweg 10-14 D-55128 Mainz Germany;

Johannes Gutenberg Univ Mainz Inst Inorgan &

Analyt Chem Duesbergweg 10-14 D-55128 Mainz Germany;

Univ Modena &

Reggio Emilia CNR Inst NanoSci S3 Via G Campi 213-A I-41100 Modena Italy;

Univ Bucharest Inorgan Chem Lab Fac Chem Str Dumbrava Rosie 23 Bucharest 020464 Romania;

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1. Aggregation of [Ln(12)(III)] clusters by the dianion of 3-formylsalicylic acid. Synthesis, crystal structures, magnetic and luminescence properties [J] . Dinca Alina S., Mindru Alexei, Dragancea Diana, Dalton transactions: An international journal of inorganic chemistry . 2019,第5期

机译：通过3-甲酰基羟基丙烯酸的Dianion聚集[LN（12）（III）]簇的聚集。合成，晶体结构，磁性和发光性能
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Aggregation of [Ln(12)(III)] clusters by the dianion of 3-formylsalicylic acid. Synthesis, crystal structures, magnetic and luminescence properties

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