Microporous {[Ni(cyclam)]3[W(CN)8]2}n affording reversible structural and magnetic conversions

被引：34

作者：

Nowicka, Beata ^{[1
]}

Balanda, Maria ^{[2
]}

Gawel, Bartlomiej ^{[1
]}

Cwiak, Grzegorz ^{[2
]}

Budziak, Andrzej ^{[2
]}

Lasocha, Wieslaw ^{[1
]}

Sieklucka, Barbara ^{[1
]}

机构：

[1] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland

[2] Polish Acad Sci, H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

来源：

DALTON TRANSACTIONS | 2011年 / 40卷 / 12期

关键词：

SINGLE-CHAIN MAGNETS; PRUSSIAN BLUE ANALOGS; CRYSTAL TRANSFORMATION; W-V; CYANIDE; COMPLEXES; SPIN; TETRANUCLEAR; EXCHANGE; POLYMER;

D O I：

10.1039/c0dt01434f

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Methanol adsorption into the porous 2D bimetallic coordination network {[Ni(cyclam)](3)[W(CN)(8)](2)}(n) (cyclam = 1,4,8,11-tetraazacyclotetradecane) causes significant modification of its structure and magnetic properties. Fully reversible transformations between the three states of the network: anhydrous, hydrated and methanol-modified are observed with the transition to the magnetic ordered state at T-c equal to 4.9 K, 8.3 K and 11.4 K respectively. All three phases have a metamagnetic character but the methanol-modified one most easily turns to ferromagnetic and shows a hysteresis loop with coercivity field of 250 Oe. The differences in magnetic behaviour of the anhydrous and guest-induced forms of the compound are discussed in terms of changes in the structure: CN-bridge geometry and distance between the layers.

引用

页码：3067 / 3073

页数：7

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