Structure de l'hydrogénophosphate d'argent Ag<sub>2</sub>HPO<sub>4</sub>

Tordjman, I.; Boudjada, Ali; Guitel, J. C.; Masse, R.

doi:10.1107/s0567740878011966

Cited by 9 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These paths were obtained using FEFF calculations from the crystal structure of Ag 2 HPO 4 . 59 This calculation produces four Ag ⇔ P single scattering paths The degeneracy of the Ag ⇔ P paths calculated by FEFF is 2; however, due to the inclusion of both paths to produce a reliable model of the system, the degeneracy of both paths was set to 1. This finding suggests that the second shell consists of ca.…”

Section: Methodsmentioning

confidence: 99%

Atomic-Scale Structural Characterization of Silver-Doped Phosphate-Based Glasses Prepared by Coacervation

et al. 2021

View full text Add to dashboard Cite

show abstract

Section: Methodsmentioning

confidence: 99%

Atomic-Scale Structural Characterization of Silver-Doped Phosphate-Based Glasses Prepared by Coacervation

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Similar disordered sites are found in crystalline materials containing polyphosphate chains (e.g., AgBa(PO 3 ) 3 , Ag 2 HPO 4 and AgZn(PO) 3 ). [16][17][18] To put these NDIS results in a wider context, we collected XANES and EXAFS data from a series of glasses prepared by the same method, but with varying silver content, i.e., (CaO) 0.3-(Na 2 O) 0.2-x (Ag 2 O) x (P 2 O 5 ) 0.5 , where x ¼ 0.05, 0.10, 0.15 and 0.20. The observed degree of disorder is qualitatively supported by the Ag K-edge EXAFS data, which only exhibited very weak EXAFS oscillations, despite cooling the samples to ca.…”

Section: Resultsmentioning

confidence: 99%

Structural Characteristics of Antibacterial Bioresorbable Phosphate Glass

Moss

Pickup

Ahmed

et al. 2008

Adv Funct Materials

View full text Add to dashboard Cite

Neutron diffraction with isotopic substitution has been used to probe the local environment of silver in a melt‐quench derived bioresorbable phosphate glass. Samples enriched with 107Ag and 109Ag were prepared and neutron diffraction data collected. A first‐order difference was taken between the data sets to give detailed information about the silver environment in the glass matrix. The measured Ag‐O correlation has three components in the first coordination shell at 2.28 Å, 2.51 Å, and 2.58 Å with coordination numbers of 2.1, 2.7, and 1.1, respectively, consistent with silver occupying a distorted octahedral environment. These results have been correlated with those from Ag K‐edge X‐ray absorption near‐edge spectroscopy measurements. The results suggest that the addition of silver to the (CaO)0.3(Na2O)0.2(P2O5)0.5 system has a significant effect on the host phosphate network, with shorter and more branched chains replacing the long chains and rings normally associated with the metaphosphate composition.

show abstract

“…Ag2HP04 -The atomic arrangement of this salt, determined by Tordjman et al [35], provides one of the rare example of a chain of HPO4 groups spiraling around a 3i helical axis. Figures 6.3 and 6.4 represent two different projections of this chain.…”

Section: Chainsmentioning

confidence: 96%

“…Projection, along the 3i helical axis, of the infinite (HP04) n chain observed in Ag2HP04[35]. The drawing conventions are similar to those used in theFigure 6.2.…”

mentioning

confidence: 99%