Synthesis, crystal structure, and vibrational spectroscopic and UV–visible studies of Cs2MnP2O7

Kaoua, Sid Ali; Krimi, S.; Péchev, Stanislav; Gravereau, P.; Chaminade, Jean‐Pierre; Couzi, M.; Jazouli, A. El

doi:10.1016/j.jssc.2012.10.016

Cited by 27 publications

(9 citation statements)

References 48 publications

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“…Indeed, the observed IR bands appear at wavenumbers different from those in the Raman spectrum ( Figure 6). This is in agreement with the centrosymmetric character of Na 2 K 2 Cu(MoO 4 ) 3 structure [36]. The Raman spectrum can be separated into two parts with a wide empty gap in the range 500-700 cm −1 that is commonly observed in molybdates containing MoO 4 tetrahedra [22,[37][38][39][40][41][42][43].…”

Section: Electrical Propertiessupporting

confidence: 84%

Electrical and Vibrational Studies of Na₂K₂Cu(MoO₄)₃

Dridi

Zid

Mączka

2017

Advances in Materials Science and Engineering

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The complex impedance of Na 2 K 2 Cu(MoO 4 ) 3 material has been investigated in the temperature range of 653-753 K and in the frequency range of 40 Hz-5 MHz. Electrical behavior of the studied material is explained through an equivalent circuit model which takes into account the contributions of grains and grains boundaries. The number of vibrational modes was calculated using group theoretical approach. The infrared and Raman spectra have also been measured and vibrational assignment has been proposed.

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Section: Electrical Propertiessupporting

confidence: 84%

Electrical and Vibrational Studies of Na₂K₂Cu(MoO₄)₃

Dridi

Zid

Mączka

2017

Advances in Materials Science and Engineering

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“…Distinct three-dimensional structures 34,42 and the second CsNbP 2 O 8 modification are similar layered compounds. 32,33 The structures of these four phosphates could not be conceived to be built from M (8) and some of the spectral features are assigned as per the literature reports on phosphates 20,64 and vanadates. 49,52,65 Raman spectra (Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and structural characterization of AMV₂O₈(A = K, Rb, Tl, Cs; M = Nb, Ta) vanadates: a structural comparison of A⁺M⁵⁺V₂O₈vanadates and A⁺M⁵⁺P₂O₈phosphates

2015

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Eight new quaternary vanadates of niobium and tantalum, AMV2O8 (A = K, Rb, Tl, Cs; M = Nb, Ta), have been prepared by solid state reactions and structurally characterized by single crystal and powder X-ray diffraction (XRD) techniques. The two cesium compounds, unlike the known CsSbV2O8 with a layered yavapaiite structure, have a new three-dimensional structure and the other six compounds possess the known KSbV2O8 structure type. The three types of [(MV2O8)(-)]∞ anionic frameworks of twelve A(+)M(5+)V2O8 (A = K, Rb, Tl, Cs; M = Nb, Ta, Sb) vanadates could be conceived to be built by different connectivity patterns of M2V4O18 ribbons, which contain MO6 octahedra and VO4 tetrahedra. A structural comparison of these twelve vanadates and the nineteen A(+)M(5+)P2O8 phosphates has been made. The spectroscopic studies of these eight new quaternary vanadates are presented.

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“…6, the Raman spectra are very similar to those reported for Na3Ca1-xMnxTi(PO4)3 (0 ≤ x ≤ 1) glasses 29 . The peaks observed in the highfrequency region, 850 -1250 cm -1 , are due to the P-O stretching modes of monophosphate (PO4) and diphosphate (P2O7) groups [30][31][32][33][34] . The peak at ~1035 cm -1 , relatively sharp, is due to the diphosphate P2O7 4ions 33,34 .…”

Section: Raman Spectroscopymentioning

confidence: 99%

“…The peaks observed in the highfrequency region, 850 -1250 cm -1 , are due to the P-O stretching modes of monophosphate (PO4) and diphosphate (P2O7) groups [30][31][32][33][34] . The peak at ~1035 cm -1 , relatively sharp, is due to the diphosphate P2O7 4ions 33,34 . The presence of a strong peak at ~750 cm -1 , observed in titanium oxyphosphates and assigned to Ti-O vibrations in the -Ti-O-Ti-O-chains 35,36 , indicates that the glass structure contains TiO6 octahedra linked by corners to form short -Ti-O-Ti-Ochains.…”

Section: Raman Spectroscopymentioning

confidence: 99%

Synthesis, structural characterization and ionic conductivity of mixed alkali titanium phosphate glasses

Dardar¹,

Gross²,

Krimi³

et al. 2018

Mediterr.J.Chem.,

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Glasses with formula Na3-xLixCaTi(PO4)3 [10(3-x) mol. % Na2O - 10x mol. % Li2O - 20 mol. % CaO - 20 mol. % TiO2 - 30 mol. % P2O5] (0 ≤ x ≤ 3) were prepared by standard melt-quenching technique, and their structural and physical properties were characterized by thermal analysis, density measurements, Raman, and impedance spectroscopy. When Na+ is gradually replaced by Li+ , molar volume, glass transition temperature (Tg) and ionic conductivity values decrease, pass through a minimum around the composition x = 1.5, then increase, while density values increase, pass through a maximum, then decrease. The non-linear variation of these physical properties is a result of the classical mixed alkali effect. Powder X-ray diffraction shows that crystallization of the glasses leads to the formation of a Nasicon phase for the compositions x = 0 and x = 0.5, and to a mixture of phases for the other compositions. Raman spectroscopy study shows that the glass structure contains P2O7 and PO4 groups, and short -Ti-O-Ti-O-Ti- chains, formed by TiO6 octahedra linked to each other through corners. These chains are linked by phosphate tetrahedra to form -O-Ti-O-P-O- linkages.

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Synthesis, crystal structure, and vibrational spectroscopic and UV–visible studies of Cs2MnP2O7

Cited by 27 publications

References 48 publications

Electrical and Vibrational Studies of Na₂K₂Cu(MoO₄)₃

Electrical and Vibrational Studies of Na₂K₂Cu(MoO₄)₃

Synthesis and structural characterization of AMV₂O₈(A = K, Rb, Tl, Cs; M = Nb, Ta) vanadates: a structural comparison of A⁺M⁵⁺V₂O₈vanadates and A⁺M⁵⁺P₂O₈phosphates

Synthesis, structural characterization and ionic conductivity of mixed alkali titanium phosphate glasses

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Synthesis, crystal structure, and vibrational spectroscopic and UV–visible studies of Cs2MnP2O7

Cited by 27 publications

References 48 publications

Electrical and Vibrational Studies of Na2K2Cu(MoO4)3

Electrical and Vibrational Studies of Na2K2Cu(MoO4)3

Synthesis and structural characterization of AMV2O8(A = K, Rb, Tl, Cs; M = Nb, Ta) vanadates: a structural comparison of A+M5+V2O8vanadates and A+M5+P2O8phosphates

Synthesis, structural characterization and ionic conductivity of mixed alkali titanium phosphate glasses

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Electrical and Vibrational Studies of Na₂K₂Cu(MoO₄)₃

Electrical and Vibrational Studies of Na₂K₂Cu(MoO₄)₃

Synthesis and structural characterization of AMV₂O₈(A = K, Rb, Tl, Cs; M = Nb, Ta) vanadates: a structural comparison of A⁺M⁵⁺V₂O₈vanadates and A⁺M⁵⁺P₂O₈phosphates