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dc.creatorLEMUS SANTANA, A.A.-
dc.creatorRODRIGUEZ HERNANDEZ, J.-
dc.creatorDEL CASTILLO, L.F.-
dc.creatorBASTERRECHEA, M.-
dc.creatorREGUERA, E.-
dc.date2012-03-27T21:32:43Z-
dc.date2012-03-27T21:32:43Z-
dc.date2009-01-08-
dc.date.accessioned2013-01-16T12:51:44Z-
dc.date.available2013-01-16T12:51:44Z-
dc.date.issued2013-01-16-
dc.identifierJournal of Solid State Chemistry 182 (2009) 757–766-
dc.identifierhttp://hdl.handle.net/123456789/644-
dc.identifier.urihttp://www.repositoriodigital.ipn.mx/handle/123456789/11133-
dc.descriptionThe materials under study, T[Ni(CN)4] 2pyz with T ¼ Mn, Zn, Cd, were prepared by separation of T[Ni(CN)4] layers in citrate aqueous solution to allow the intercalation of the pyrazine molecules. The obtained solids were characterized from chemical analyses, X-ray diffraction, infrared, Raman, thermogravimetry, UV–Vis, magnetic and adsorption data. Their crystal structure was solved from ab initio using direct methods and then refined by the Rietveld method. A unique coordination for pyrazine to metal centers at neighboring layers was observed. The pyrazine molecule is found forming a bridge between Ni and T atoms, quite different from the proposed structures for T ¼ Fe, Ni where it remains coordinated to two T atoms to form a vertical pillar between neighboring layers. The coordination of pyrazine to both Ni and T atoms minimizes the material free volume and leads to form a hydrophobic framework. On heating the solids remain stable up to 140 1C. No CO2 and H2 adsorption was observed in the small free spaces of their frameworks. & 2009 Elsevier Inc. All rights reserved.-
dc.languageen-
dc.publisherJournal of Solid State Chemistry-
dc.subjectCrystal chemistry-
dc.subjectStructural studies-
dc.subjectLayered compounds-
dc.subjectPillared solids-
dc.titleUnique coordination of pyrazine in T[Ni(CN)4] 2pyz with T ¼ Mn, Zn, Cd-
dc.typeArticle-
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