Synthesis and characterization of (Cu1−x Znx)3(PO4)2 · H2O (0 &lt; x ≤ 0.19) solid solutions

Viter, V. N.; Nagornyi, P. G.

doi:10.1134/s0020168506040121

Cited by 4 publications

(2 citation statements)

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“…The title compound crystallizes in the Fe 3 (PO 4 ) 2 ÁH 2 O structure type (Moore & Araki, 1975) and is isotypic with other phases of the type (M,M') 3 (PO 4 ) 2 ÁH 2 O (Liao et al, 1995), viz. Co 2.59 Zn 0.41 (PO 4 ) 2 ÁH 2 O (Sørensen et al, 2005), Co 2.39 Cu 0.61 (PO 4 ) 2 ÁH 2 O (Assani et al, 2010b), (Cu 1Àx Co x ) 3 (PO 4 ) 2 ÁH 2 O (0 < x < 0.20 and 0.55 < x < 0.65), and (Cu 1Àx Zn x ) 3 (PO 4 ) 2 ÁH 2 O (0 < x < 0.19) (Viter & Nagornyi, 2006).…”

Section: Chemical Contextmentioning

confidence: 99%

Crystal structure of magnesium copper(II) bis[orthophosphate(V)] monohydrate

Khmiyas¹,

Assani²,

Saadi³

et al. 2015

Acta Cryst E

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Section: Chemical Contextmentioning

confidence: 99%

Crystal structure of magnesium copper(II) bis[orthophosphate(V)] monohydrate

Khmiyas¹,

Assani²,

Saadi³

et al. 2015

Acta Cryst E

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“…The last of the samples is orthophosphate contains only copper, and maxima in its spectrum at 992 and 1042 cm -1 overlap each other to the least extent, therefore we can suggest that they correspond to the stretching vibrations of P-O bonds in copper phosphate. According to [20,21], symmetric ν s (PO) and asymmetric ν as (PO) vibrations with frequencies of 930-990 and 975-1140 cm -1 , respectively, are actually characteristic for the IR spectra of copper orthophosphate, though similar lines correspond to analogous vibrations of basic copper phosphates and also to phosphates containing copper together with other metals, for example with zinc [22][23][24]. As in our case the samples are free from foreign metals, except for copper, and as hydroxy groups were not found there, the above-stated assumption seems pertinent.…”

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confidence: 99%

Effect of composition of precipitated calcium-copper orthophosphates on their character

Sinyaev¹,

Shustikova²,

Sakhipov³

et al. 2012

Russ J Gen Chem

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A group of crystalline and amorphous calcium-copper phosphates was synthesized by the exchange reaction between sodium orthophosphate and calcium and copper(II) nitrates in solutions within a wide range of reagent ratios 0 ≤ Cu×100/(Cu + Ca) ≤ 100. Conclusions on the effect of the Cu×100/(Cu + Ca) ratio on the phase composition of the substances and on the state of chemical bonds therein were made on the basis of the results of X-ray phase analysis and IR Fourier and electronic spectroscopy.Calcium phosphate acid salts, like hydroxyapatite, tricalcium phosphate, and their amorphous analogs, are of interest as precursors of bioceramics with adjustable pore sizes [1-6]. Compounds of alkaline earth metals, silicates, and many other substances [7-11] may act as components efficiently influencing the porosity of ceramics obtained from phosphate precursors. Transition metal ions are of interest, as they allow fine control both of the microscopic structure and properties of ceramics. Copper is one of such examples, as its compounds impart strong antiseptic properties to materials [12][13][14][15]. We already described this element as a modifier of amorphous calcium phosphates, which substituted a small part of calcium cations in their composition [16]. In this communication we consider the nature of phosphates obtained from aqueous solutions at the simultaneous presence of calcium and copper in a wide range of 0 ≤ Cu×100/(Cu + Ca) ≤ 100 ratios.The synthesized compounds are pasty products with moisture content of 80-90 wt %. In air at room temperature phosphates erode rather fast, losing the main part of bound water and turning to solids with humidity of no more than 20% and an inorganic substance as a remainder. Therefore the pastes were dried in a thin layer in air at room temperature to a constant weight. The table gives an idea of the chemical composition of the resulting substances. Synthesized substances were studied by the methods of X-ray phase analysis, IR Fourier-and electronic spectroscopy.

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