Crystal structure refinement and vibrational analysis of Y[Co(CN)6]·4H2O and its thermal decomposition products

Gil, Diego M.; Carbonio, R. E.; Gómez, María Inés

doi:10.1016/j.molstruc.2013.03.008

Cited by 13 publications

(7 citation statements)

References 35 publications

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“…It is assumed that the bands due to the 13 C 15 N species are too weak to be observed in the IR and Raman spectra. These results are in agreement with the assignment reported for different hexacyanocobaltates(III) [20,30,31].…”

Section: Cn Stretching Bandssupporting

confidence: 93%

“…The oxides obtained by this method were formed at shorter annealing times and lower temperatures than by ceramic methods. The use of a precursor containing the appropriate A/B ratio enforces the formation of ABO 3 perovskitetype oxides with the precise stoichiometry, thus controlling and preventing any elements segregation generally observed in conventional methods and allowing the synthesis of the desired mixed oxide at very low temperatures [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Crystal structure, vibrational and thermal behavior of Ba(NH4)[Co(CN)6]·4H2O: A new precursor for the synthesis of hexagonal BaCoO3

et al. 2014

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Section: Cn Stretching Bandssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Crystal structure, vibrational and thermal behavior of Ba(NH4)[Co(CN)6]·4H2O: A new precursor for the synthesis of hexagonal BaCoO3

et al. 2014

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“…The Raman dispersion spectrum (Fig. 4) of the complex shows two strong CN bands in the region 2,000-2,200 cm -1 [46]. The band located at lower frequency is due to the CN symmetric stretching.…”

Section: Thermal Decompositionmentioning

confidence: 95%

Ammonium, barium hexacyanoferrate(II) trihydrate

Córdoba

Echeverría

Piro

et al. 2015

J Therm Anal Calorim

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The ammonium, barium hexacyanoferrate(II) trihydrate, Ba(NH 4 ) 2 [Fe(CN) 6 ]Á3H 2 O, has been synthesized for the first time, was characterized by thermogravimetric and differential thermal analysis (TG-DTA), infrared (IR) and Raman spectroscopy and chemical analysis, and its crystal and molecular structures were determined by X-ray diffraction methods. The chemical composition was determined by assaying Ba(II) with EDTA, ammonia nitrogen with Nessler's reagent as indicator and Fe(II) using spectrophotometry with ortho-phenanthroline method. The hydration number was estimated by thermogravimetric analysis. The compound crystallizes in the trigonal R-3c space group. The ferrocyanide anion has an almost perfect octahedral shape with its Fe(II) ion in a crystallographic special position of point symmetry S 6 [d(Fe-C) = 1.912(2) A ˚, d(C-N) = 1.153(3) A ˚]. The barium, ammonium nitrogen and water oxygen atoms are also at lattice special positions with site symmetries D 3 , C 3 and C 2 , respectively. The thermal decomposition process was also studied using TG-DTA, and the products of decomposition were identified by IR spectroscopy. It proposes a mechanism of decomposition.

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“…В современной литературе трудно найти работы, посвященные отдельно анионным комплексам ПМ, скорее эти сведения приводятся в работах, посвященных соответствующим ДКС, некоторые из которых описаны в нашем предыдущем обзоре [65]. В монографии [66] показано, что в области низких температур (до 200 °С) для комплексов ПМ характерны такие превращения, как цис-транс-изомеризация диаминов, нитро-нитрито-изомеризация связи в координированной нитрогруппе и перегруппировка в солях типа Магнуса и Вокелена мельными металлами, кобальтом, никелем, аммонием, щелочными металлами, лантанидами [85][86][87][88][89][90][91][92] и цветными металлами [93][94][95]. При наличии во внешней сфере лития, кальция или бария кристаллизационная вода при термолизе гексацианометаллатов удаляется от 80 до 180 °С.…”

Section: термолиз анионных комплексовunclassified

ТЕРМИЧЕСКОЕ РАЗЛОЖЕНИЕ КАТИОННЫХ, АНИОННЫХ И ДВОЙНЫХ КОМПЛЕКСНЫХ СОЕДИНЕНИЙ 3d-МЕТАЛЛОВ

Domonov¹,

Печенюк²,

Гостева³

2020

РХЖ

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Обзор посвящен рассмотрению термического поведения катионных, анионных и двойных комплексных соединений 3d металлов (Fe, Co, Ni, Cu, Mn , Cr) в сравнении с комплексами благородных металлов, с координированными аммиаком, органическими аминами, мочевиной, цианидом, тиоцианатом, оксалатом и нитритом. Показано, что в процессе термолиза, проводимого в неравновесных условиях, двойные комплексы выдерживают нагревание до 200–250 °С вне зависимости от их термодинамической устойчивости.

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Crystal structure refinement and vibrational analysis of Y[Co(CN)6]·4H2O and its thermal decomposition products

Cited by 13 publications

References 35 publications

Crystal structure, vibrational and thermal behavior of Ba(NH4)[Co(CN)6]·4H2O: A new precursor for the synthesis of hexagonal BaCoO3

Crystal structure, vibrational and thermal behavior of Ba(NH4)[Co(CN)6]·4H2O: A new precursor for the synthesis of hexagonal BaCoO3

Ammonium, barium hexacyanoferrate(II) trihydrate

ТЕРМИЧЕСКОЕ РАЗЛОЖЕНИЕ КАТИОННЫХ, АНИОННЫХ И ДВОЙНЫХ КОМПЛЕКСНЫХ СОЕДИНЕНИЙ 3d-МЕТАЛЛОВ

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