Spin canting and metamagnetism in the two azido-bridged 1D complexes [Ni(3,5-dmpy)2(N3)2]n and [Co1.5(3,5-dmpy)3(N3)3]n

被引：14
|
作者：
Lu, Zhengliang [1 ]
Gamez, Patrick [2 ,3 ]
Kou, Hui-Zhong [4 ]
Fan, Chunhua [1 ]
Zhang, Haitao [1 ]
Sun, Guoxin [1 ]
机构：
[1] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China
[2] Univ Barcelona, ICREA, E-08028 Barcelona, Spain
[3] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain
[4] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
来源：
CRYSTENGCOMM | 2012年 / 14卷 / 15期
基金：
中国国家自然科学基金;
关键词：
END-TO-END; SINGLE-MOLECULE MAGNET; TOPOLOGICAL FERRIMAGNETIC BEHAVIOR; MONTE-CARLO-SIMULATION; CRYSTAL-STRUCTURE; STRUCTURAL-CHARACTERIZATION; COORDINATION POLYMERS; NICKEL(II) COMPLEXES; KAGOME LATTICE; MIXED AZIDE;
D O I：
10.1039/c2ce25174d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Two 1D systems with formulae [Ni(3,5-dmpy)(2)(N-3)(2)](n) (1) and [Co-1.5(3,5-dmpy)(3)(N-3)(3)](n) (2) (where 3,5-dmpy stands for 3,5-dimethylpyridine) have been synthesized, and their magnetic properties have been analyzed. Both complexes crystallize in the monoclinic space group P2(1)/n, with a = 13.302(3) angstrom, b = 7.5138(15) angstrom, c = 16.637(3) angstrom and beta = 103.61(3)degrees, and a = 11.559(2) angstrom, b = 14.136(3) angstrom, c = 16.174(3) angstrom and beta = 98.08(3)degrees, for 1 and 2 respectively. Compound 1 consists of a chain of nickel ions linked by double EE (end-to-end) azido bridges. In complex 2, the cobalt ions are linked by azide moieties, with an EO (end-on)-EO-EE sequence. Magnetic studies performed in the temperature range 2.0-300 K reveal that 1 and 2 exhibit spin-canting antiferromagnetic interactions along the azido-bridged chain. In addition, these magnetic investigations indicate that complex 1 behaves as a metamagnet.
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收藏
页码：5035 / 5041
页数：7
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