Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/19831
Title: | Cobalt and copper pyridylmethylphosphonates with two- and three-dimensional structures and field-induced magnetic transitions |
Author: | Yang, Ting-Hai Cai, Zhong-Sheng Shi, Fa-Nian Zheng, Li-Min |
Keywords: | SINGLE-CHAIN MAGNET METAL-ORGANIC FRAMEWORK MOLECULE-MAGNET PROTON-CONDUCTION LANTHANIDE PHOSPHONATES CANTED ANTIFERROMAGNET WEAK FERROMAGNETISM RELAXATION BEHAVIOR DIPHOSPHONATES |
Issue Date: | 2015 |
Publisher: | ROYAL SOC CHEMISTRY |
Abstract: | Two novel metal pyridylmethylphosphonates, namely, [Co(4-pmp)] (1) and [Cu(4-pmp)(H2O)] (2), (4-pmpH(2) = 4-pyridylmethylphosphonic acid), have been hydrothermally synthesized and characterized by X-ray diffraction, infrared spectroscopy, elemental analysis, and thermogravimetric analysis. In compound 1, each {PO3C} tetrahedron is corner-shared with three {CoNO3} tetrahedra and vice versa, thus forming a one-dimensional (1-D) inorganic chain along the a axis containing 8-membered rings of [(Co-O-P-O)(2)]. The inorganic chains are further connected by a 4-pmp(2-) ligand, generating a 2-D layered structure. Compound 2 displays a three-dimensional (3-D) framework structure, in which the inorganic layers are pillared by the pyridyl groups of the ligand, generating a 3-D pillared-layered structure. The magnetic properties of 1 and 2 have been studied. Compounds 1 and 2 behave as metamagnets at low temperature. The critical fields are about 70 kOe for 1 and 47 kOe for 2 at 1.8 K. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19831 |
DOI: | 10.1039/c5dt03050a |
ISSN: | 1477-9226 |
Publisher Version: | 10.1039/c5dt03050a |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Cobalt and copper pyridylmethylphosphonates with two- and three-dimensional structures and field-induced magnetic transitions_10.1039c5dt03050a.pdf | 1.65 MB | Adobe PDF |
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