2004
DOI: 10.1590/s0103-50532004000200003
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Isomorphic series of double sulfites of the Cu2SO3.MSO3.2H2O (M = Cu, Fe, Mn, and Cd) Type: a review

Abstract: Embora o primeiro sulfito duplo de valência mista, Cu 2 SO 3 .CuSO 3 .2H 2 O, tenha sido preparado no início do século XIX por M. Chevreul, o interesse por compostos dessa natureza ressurgiu só depois da metade do século XX com a determinação da estrutura cristalina deste composto e a caracterização de seu espectro de absorção na região do infravermelho. Nos últimos anos, os estudos referentes a este tema têm se intensificado, especialmente após a descoberta da possibilidade de substituição isomórfica do Cu(II… Show more

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Cited by 16 publications
(16 citation statements)
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“…As can be seen, the patterns of the substituted sulfite resemble those of Chevreul's salt with minor changes in "d" spacings. [5][6][7][8][9] The diamagnetic host ions possess a closed outer electronic shell, heightening the local symmetry of the host lattice. When Cu II replace diamagnetic Cu I and Cd II centers in such host lattices, local distortions take place because of the mismatch of the size of Cu II ions to that of host ions and in response to dynamic effects such as JahnTeller effects.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…As can be seen, the patterns of the substituted sulfite resemble those of Chevreul's salt with minor changes in "d" spacings. [5][6][7][8][9] The diamagnetic host ions possess a closed outer electronic shell, heightening the local symmetry of the host lattice. When Cu II replace diamagnetic Cu I and Cd II centers in such host lattices, local distortions take place because of the mismatch of the size of Cu II ions to that of host ions and in response to dynamic effects such as JahnTeller effects.…”
Section: Resultsmentioning
confidence: 99%
“…4 The former is in In such cases, the X-ray diffraction data were similar to those of Chevreul's salt (Figure 1), with minor changes in "d" spacings, forming an isomorphic series. [6][7][8][9] As a consequence, a gradual substitution of the Cu II ions by the transition metal ions is also possible, giving rise to a variety of mixed compositions. The isomorphic series has been found to have the general formula of Cu (M = Cu, Fe, Mn and Cd).…”
Section: Introductionmentioning
confidence: 99%
“…At the pH conditions in our experiments (∼1), Chevreul's salt does not precipitate, since the double sulfites series [24][25][26][27][28] forms only at pH 3. Thus, based on this fact and the FTIR and XRD results, it is reasonable to suggest that the transient complex formed in Eq.…”
Section: Resultsmentioning
confidence: 58%
“…O sal de Chevreul é um exemplo disso, capaz de estabilizar Cu(I) e Cu(II) em uma rede de sulfito na qual o Cu(I) coordena-se tanto através de átomos de enxofre quanto através de átomos de oxigênio em ambiente tetraédrico; enquanto Cu(II) coordena-se ao íon sulfito apenas através de átomos de oxigênio em ambiente octaédrico. 12 O sal de Os materiais à base de cobre são capazes de promover uma variedade de reações, principalmente devido a seus estados de oxidação acessíveis (Cu(0), Cu(I) e Cu(II)). Os óxidos de cobre são materiais promissores para aplicações em transformações catalíticas de substâncias orgânicas, eletrotrocatálise e fotocatálise, principalmente devido ao seu alto potencial redox, baixa toxicidade e baixo custo.…”
Section: Figura 2 Etapas Do Beneficiamento Do Minério De Cobre Sulfeunclassified