We have located links that may give you full text access.
Synthesis of new Ln 4 (Al 2 O 6 F 2 )O 2 (Ln = Sm, Eu, Gd) phases with a cuspidine-related structure.
IUCrJ 2019 January 2
The first fluorination of the cuspidine-related phases of Ln4 (Al2 O7 □)O2 (where Ln = Sm, Eu, Gd) is reported. A low-temperature reaction with poly(vinyl-idene difluoride) lead to the fluorine being substituted in place of oxygen and inserted into the vacant position between the dialuminate groups. X-ray photoelectron spectroscopy shows the presence of the F 1 s photoelectron together with an increase in Al 2 p and rare-earth 4 d binding energies supporting F incorporation. Energy-dispersive X-ray spectroscopy analyses are consistent with the formula Ln4 (Al2 O6 F2 )O2 , confirming that substitution of one oxygen by two fluoride atoms has been achieved. Rietveld refinements show an expansion in the cell upon fluorination and confirm that the incorporation of fluoride in the Ln4 (Al2 O7 □)O2 structure results in changes in Al coordination from four to five. Thus, the isolated tetrahedral dialuminate Al2 O7 groups are converted to chains of distorted square-based pyramids. These structural results are also discussed based on Raman spectra.
Full text links
Related Resources
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app