Synthesis, Structural Characterization, and Magnetic Properties of the Heteroleptic Dinuclear Nickel Selenite Complex [{Ni(TMEDA)SeO3}2]

被引：5

作者：

Delferro, Massimiliano ^{[1
]}

Graiff, Claudia ^{[2
]}

Marchio, Luciano ^{[2
]}

Elviri, Lisa ^{[2
]}

Mazzani, Marcello ^{[3
]}

Ricco, Mauro ^{[3
]}

Predieri, Giovanni ^{[2
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[2] Chim Fis Univ Parma, Dipartimento Chim Gen & Inorgan, I-43100 Parma, Italy

[3] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2011年 / 22期

关键词：

Nickel; Selenium; Density functional calculations; Magnetic properties; EXCHANGE COUPLING-CONSTANTS; GAUSSIAN-BASIS SETS; MOLECULAR MAGNETISM; CRYSTAL-STRUCTURE; METAL SELENITES; ATOMS LI; X-RAY; COORDINATION; TELLURITES; CLUSTERS;

D O I：

10.1002/ejic.201100385

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of Ni(NO3)(2)center dot 6H(2)O with Na2SeO3 in the presence of tetramethylethylenediamine (TMEDA) in a water/ethanol mixture yielded the heteroleptic complex [{Ni(TMEDA)SeO3}(2)] (1). Single-crystal X-ray diffraction analysis showed that complex 1 consists of a dinuclear species in which the two nickel atoms are held together by two bridging selenito anions. The crystal packing of 1 is determined by networks of hydrogen bonds, involving cocrystalized water molecules and the oxygen atoms of the bridging SeO32- groups. The two nickel ions in 1 exhibit antiferromagnetic coupling with J = -25.7 +/- 0.1 cm(-1), in good agreement with DFT calculations. In addition, when a less sterically hindered ancillary ligand, such as ethylenediamine (en), was used, the homoleptic complex [Ni(en)(3)](SeO3) (2) was obtained.

引用

页码：3327 / 3333

页数：7

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