期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 230, 期 -, 页码 374-380出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2015.07.042
关键词
2D copper nitroprusside; Intercalation of organic molecules; Intermolecular interactions; Hybrid inorganic-organic solids; Molecular magnets
资金
- CONACyT (Mexico) [2011-01-174247, 2011-01-166387]
- CONACyT-SENER [231461, SRE-2013-191089]
- FONCYT [CONACYT: PICT2012-3079]
This contribution discusses the intercalation of imidazole and its 2-ethyl derivative, and pyridine in 2D copper nitroprusside. In the interlayer region, neighboring molecules remain interacting throu gh their dipole and quadrupole moments, which supports the solid 3D crystal structure. The crystal structure of this series of intercalation compounds was solved and refined from powder X-ray diffraction patterns complemented with spectroscopic information. The intermolecular interactions were studied from the refined crystal structures and low temperature magnetic measurements. Due to strong attractive forces between neighboring molecules, the resulting pi-pi cloud overlapping enables the ferromagnetic coupling between metal centers on neighboring layers, which was actually observed for the solids containing imidazole and pyridine as intercalated molecules. For these two solids, the magnetic data were properly described with a model of six neighbors. For the solid containing 2-ethylimidazole and for 2D copper nitroprusside, a model of four neighbors in a plane is sufficient to obtain a reliable data fitting. (C) 2015 Elsevier Inc. All rights reserved.
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