Heteropolynuclear metamagnet showing spin canting and single-crystal to single-crystal phase transformation

被引：54

作者：

Chen, Pang-Kuan

Che, Yun-Xia

Zheng, Ji-Min ^{[1
]}

Batten, Stuart R.

机构：

[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China

[2] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

来源：

CHEMISTRY OF MATERIALS | 2007年 / 19卷 / 09期

关键词：

D O I：

10.1021/cm062801s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The two-dimensional heteropolynuclear metal-organic framework [Co3Zn2(m-BDC)(4)(mu(3)-OH)(2)(mu(2)-OH2)(2)(H2O)(4)]center dot 4.5H(2)O (1) (m-H2BDC = 1,3-benzenedicarboxylic acid) has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction, infrared spectrum, X-ray powder diffraction, and elemental analysis. Our experimental results signify that the formation of compound 1 is highly medium-selective and temperature-sensitive in the hydrothermal system. Interestingly, 1 undergoes a single-crystal to single-crystal structural phase transition from orthorhombic Pmna to monoclinic P2(1)/c (1') at very low temperature of about 156.5 K. In this process, we found two topologically different water tapes. More importantly, the magnetic property of the target compound was also intensively investigated in the temperature range of 2-300 K and shows the coexistence of spin canting and field-induced metamagnetism.

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页码：2162 / 2167

页数：6

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