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Title

Crystal structure and thermal behavior of a chromium-piperazinium phosphate

AuthorsSilva, Iván da ; Castro, Germán R. ; Amghouz, Z.; Espina, Aránzazu ; Khainakov, Sergei ; García-Granda, Santiago ; García, José R.
KeywordsPiperazine
Phosphate
Crystal structure
Chromium
Issue Date2014
PublisherSpringer
CitationJournal of Thermal Analysis and Calorimetry 117(3): 1179-1186 (2014)
Abstract(C4N2H12)CrO(H1.5PO4)2·H2O has been synthesized hydrothermally using piperazine as organic template. Its crystal structure was solved ab initio using synchrotron powder X-ray diffraction data [monoclinic, a = 16.9649(4) Å, b = 9.8609(2) Å, c = 7.14375(14) Å, and β = 94.896(3)°, space group P21/a, Z = 4]. 1D structure is composed by isolated infinite anionic chains [CrO(H1.5PO4)2]n (vertex-sharing {CrO6} octahedra joined by phosphate moieties). Their 2D plate-like morphology is propitiated by a very strong inter-chain interaction (P–O···H···O–P symmetric hydrogen bonds). KAS isoconversional method was applied to determine the activation energy for both thermal and thermo-oxidative decomposition of (C4N2H12)CrO(H1.5PO4)2·H2O.
URIhttp://hdl.handle.net/10261/113003
DOIhttp://dx.doi.org/10.1007/s10973-014-3894-0
Identifiersdoi: 10.1007/s10973-014-3894-0
issn: 1388-6150
e-issn: 1572-8943
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(ICMM) Artículos
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