A 3D Iron(II)-Based MOF with Squashed Cuboctahedral Nanoscopic Cages Showing Spin-Canted Long-Range Antiferromagnetic Ordering

被引：52

作者：

Goswami, Soumyabrata ^{[1
]}

Adhikary, Amit ^{[1
]}

Jena, Himanshu Sekhar ^{[1
]}

Biswas, Soumava ^{[1
]}

Konar, Sanjit ^{[1
]}

机构：

[1] IISER Bhopal, Dept Chem, Bhopal 462023, India

来源：

INORGANIC CHEMISTRY | 2013年 / 52卷 / 20期

关键词：

MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; COORDINATION POLYMERS; M24L48; POLYHEDRA; COMPLEXES; SQUARATE; FRAMEWORKS; CHAIN; DIVERSITY; LIGANDS;

D O I：

10.1021/ic401886f

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of dilithium squarate with Fe(II) perchlorate led to the formation of a new Fe(II)-based 3D MOF, [Fe-3(OH)(3)(C4O4)-(C4O4)(0.5)](n) (1), with homoleptic squashed cuboctahedral cages. Complex 1 crystallizes in the monoclinic C2/c space group. Fe(II) centers in the complex are octahedrally coordinated by four squarate dianions in axial and equatorial positions and two hydroxyl groups in the remaining equatorial positions. The interesting structural feature of 1 is that the three-dimensional framework is an infinite extension of nanoscopic cuboctahedral cages. The framework also contains two types of voids; the larger hydrophobic ones are surrounded by aromatic squarate ligands, while the smaller ones are hydrophilic with hydroxyl groups on the surface connected by bifurcated hydrogen bonding interaction. A variable temperature magnetic study shows spin-canted long-range antiferromagnetic ordering in the low temperature regime.

引用

页码：12064 / 12069

页数：6

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[1] ASSEMBLY OF PORPHYRIN BUILDING-BLOCKS INTO NETWORK STRUCTURES WITH LARGE CHANNELS [J].