Ag18(SiO4)2(Si4O13), das erste Silbersilicat mit gemischten Anionen

Heidebrecht, K.; Jansen, Martin

doi:10.1002/zaac.19915970111

Cited by 18 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[47] These results showed that a linear arrangement is energetically unfavourable. In other solids, comparable linear arrangements with different atoms could be found in silicates as zunyite Al 13 Si 5 O 16 A C H T U N G T R E N N U N G (OH,F) 15 O 4 Cl, [48] thortveitite Sc 2 Si 2 O 7 [49] or (AgSiO 4 )·Ag 10 Si 4 O 13 [50] and in the nitridosilicate Ba 2 Nd 7 Si 11 N 23 .…”

Section: Resultsmentioning

confidence: 96%

Synthesis and Crystal Structure of the New High‐Pressure Phase CdB₂O₄

Knyrim

Emme

Döblinger

et al. 2008

Chemistry A European J

View full text Add to dashboard Cite

The use of high-pressure/high-temperature conditions (7.5 GPa and 1100 degrees C; Walker-type multianvil apparatus) led to the synthesis of a new cadmium borate CdB2O4, starting from stoichiometric mixtures of the oxides. The crystal structure was determined on the basis of single crystal X-ray diffraction data, to reveal the hexagonal space group P6(3) with a=885.2(2), c=716.72(8) pm, Z=8, R1=0.0178, and wR2=0.0388 (all data). CdB2O4 is built up from interconnected layers of BO4-tetrahedra and exhibits for the first time the basic structure of a family of compounds, represented by BaGa2O4, KAlSiO4, KGeAlO4, KCoPO4, CaP2N4 and the recently discovered SrP2N4. The lack of superstructure ordering in CdB2O4 was confirmed by electron diffraction. Additionally, a B--O--B angle of 180 degrees was found in this borate for the first time.

show abstract

Section: Resultsmentioning

confidence: 96%

Synthesis and Crystal Structure of the New High‐Pressure Phase CdB₂O₄

Knyrim

Emme

Döblinger

et al. 2008

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…As mentioned above, catena- tetranitridotantalate anions have hitherto not been documented in literature. Analogous structural entities are known from silicate chemistry: in, for example, Ag 10 [Si 4 O 13 ] the catena- tetrasilicate anions occur in a trans or zigzag conformation, whereas in, for example, La 6 [Si 4 O 13 ][SiO 4 ]) 2 a cis or horseshoe conformation can be found. The zigzag conformation is also present in the crystal structure of Sr 14 [Ta 4 N 13 ][TaN 4 ]O, and following the law of Clark and Morley this should be the more favorable conformation.…”

Section: Resultsmentioning

confidence: 99%

“…The combination of a tetracatena- anion together with a second anionic unit therefore may be anticipated as a very improbable structural motif. However, some examples for the coexistence of ortho- and tetracatena- anions are known, but only for the two synthetic silicates Ag 18 [Si 4 O 13 ][SiO 4 ] 2 and La 6 [Si 4 O 13 ][SiO 4 ] 2 , and with the crystal structure of Pb 21 [Si 7 O 22 ] 2 [Si 4 O 13 ] there exists one example for a subcatena- silicate with two catena- anions of different lengths. There are two conformations for the linear catena- anion.…”

Section: Introductionmentioning

confidence: 99%

The Triple Salt Sr₁₄[Ta₄N₁₃][TaN₄]O–A Nitridotantalate Oxide with 19-fold Rock Salt Superstructure

2017

View full text Add to dashboard Cite

A new structure motif in nitridometalate chemistry is the tetracatena-nitridotantalate anion [TaN]. It occurs in the crystal structure of the triple salt Sr[TaN][TaN]O (monoclinic, space group P2/c with a = 15.062(2) Å, b = 7.2484(6) Å, c = 24.266(3) Å, and β = 97.280(10)) together with ortho-tantalate and isolated oxide anions. Synthesis followed a new approach with employment of Sr surplus and reductive conditions aimed at the preparation of subvalent compounds. The new structure type was established on the basis of single-crystal X-ray diffraction data and also Rietveld refinement. It is a complex superstructure of the rock salt structure type with Ta and Sr atoms forming the face-centered cubic packing and N and O atoms occupying 18/19 of the octahedral voids. We discuss structure and stability of the triple salt with respect to other known nitridometalates and the use of this triple salt for preparative access toward new metal-rich compounds in this field.

show abstract

“…In literature, preparation routes for several different silver silicates can be found [30–34] . These silver silicate compounds are proposed as photocatalysts, where they show a higher activity compared to metallic silver [35–42] .…”

Section: Introductionmentioning

confidence: 99%

Utilization of Silver Silicate for the Formation of Highly Dispersed Silver on Silica Catalysts

2022

View full text Add to dashboard Cite

Supported silver catalysts with small and uniform particle sizes are promising for selective hydrogenation or oxidation reactions. However, during catalyst preparation, transport of the silver precursors often leads to large silver particles, especially at higher silver loadings. In this paper, the use of silver silicate as an intermediate for the preparation of silica-supported silver nanoparticles is reported. Supported silver silicate was prepared by reacting silver nitrate with silica. Subsequently, the silver silicate was reduced to prepare supported silver nanoparticles of ~2 nm in size at a loading of 15 wt% Ag. The utilization of silver silicate limited the transport of silver species during precursor decomposition, resulting in silver nanoparticles 20 times smaller than those formed by direct reduction of a supported silver nitrate precursor. The catalysts were applied in carbon monoxide oxidation, which confirmed the high dispersion as well as the excellent stability of the supported silver nanoparticles thus prepared.

show abstract

Ag₁₈(SiO₄)₂(Si₄O₁₃), das erste Silbersilicat mit gemischten Anionen

Cited by 18 publications

References 5 publications

Synthesis and Crystal Structure of the New High‐Pressure Phase CdB₂O₄

Synthesis and Crystal Structure of the New High‐Pressure Phase CdB₂O₄

The Triple Salt Sr₁₄[Ta₄N₁₃][TaN₄]O–A Nitridotantalate Oxide with 19-fold Rock Salt Superstructure

Utilization of Silver Silicate for the Formation of Highly Dispersed Silver on Silica Catalysts

Contact Info

Product

Resources

About

Ag18(SiO4)2(Si4O13), das erste Silbersilicat mit gemischten Anionen

Cited by 18 publications

References 5 publications

Synthesis and Crystal Structure of the New High‐Pressure Phase CdB2O4

Synthesis and Crystal Structure of the New High‐Pressure Phase CdB2O4

The Triple Salt Sr14[Ta4N13][TaN4]O–A Nitridotantalate Oxide with 19-fold Rock Salt Superstructure

Utilization of Silver Silicate for the Formation of Highly Dispersed Silver on Silica Catalysts

Contact Info

Product

Resources

About

Ag₁₈(SiO₄)₂(Si₄O₁₃), das erste Silbersilicat mit gemischten Anionen

Synthesis and Crystal Structure of the New High‐Pressure Phase CdB₂O₄

Synthesis and Crystal Structure of the New High‐Pressure Phase CdB₂O₄

The Triple Salt Sr₁₄[Ta₄N₁₃][TaN₄]O–A Nitridotantalate Oxide with 19-fold Rock Salt Superstructure