Open AccessThe phase transition of pyridine-2-6-dicarboxylateo nickel (II), rehydrate at different temperatures
Author(s) -
Masoumeh Tabatabaee,
دانشگاه آزاد اسلامی واحد یزد,
mikaeel Dušek,
انسیتو فیزیک ASCR,
mikasel Pojarova,
انسیتو فیزیک ASCR
Publication year - 2017
Publication title -
iranian journal of crystallography and mineralogy
Language(s) - English
Resource type - Journals
eISSN - 2588-4719
pISSN - 1726-3689
DOI - 10.18869/acadpub.ijcm.25.3.667
Subject(s) - nickel , pyridine , chemistry , phase (matter) , crystallography , phase transition , organic chemistry , physics , thermodynamics
A nickel complex with pyridine-2,6-dicarboxylic acid formulated as [Ni(pydcH)2].3H2O was synthesized and its crystal structure determined with single-crystal Xray at diffraction temperatures (296 K and 120 K). Pyridine-2,6-dicarboxyli acid deprotonated on one group of COOH and two pydcH anion is coordinated to Ni(II) atom as a tridentate ligand forming a distorted octahedral environment. The phase transition in crystal system is obtained with differ in temperature. The title compound is crystallized in monoclinic system with P21/c space group at 296 K, while it is crystallized in triclinic system with C 1 space group at 120 K.
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