Reversible dehydration process in a novel three-dimensional covalent network based on pyrimidine-4,6-dionato bridging ligand

Autor:	Juan P. García-Terán, Oscar Castillo, Antonio Luque, Urko García-Couceiro, Garikoitz Beobide, Pascual Román
Rok vydání:	2006
Předmět:	Denticity Chemistry Ligand chemistry.chemical_element Bridging ligand Zinc Crystal structure Chromophore Inorganic Chemistry Crystallography Network covalent bonding Materials Chemistry Molecule Physical and Theoretical Chemistry
Zdroj:	Inorganica Chimica Acta. 359:2583-2588
ISSN:	0020-1693
DOI:	10.1016/j.ica.2006.02.004
Popis:	The novel metal-organic polymer [Zn(μ-pmdt)(H 2 O)] n ( 1 ) ( pmdt = pyrimidine-4,6-dionate) exhibits an extended three-dimensional network with two crystallographically independent pmdt bridging ligands, one zinc(II) atom and a coordinated water molecule. The Zn(II) atoms are located at the centre of a distorted ZnN 2 OOw tetrahedral chromophore. One of the pmdt ligands acts as tetradentate bridge linking four metal centers, while the other pmdt ligand shows a bidentate coordination mode bridging two metal centers. The compound shows a reversible dehydration process, involving a coordinated water molecule, to lead an amorphous anhydrous phase. This transition has been characterized by thermogravimetric and variable-temperature X-ray powder diffraction techniques.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4545a5df3c0f5c404d27f969218d69b2 https://doi.org/10.1016/j.ica.2006.02.004 Zobrazit plný text záznamu Full Text from ScienceDirect