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Fe2 Si5 N8 : Access to Open-Shell Transition-Metal Nitridosilicates
- Source :
- Angewandte Chemie. 130:2433-2436
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- Highly condensed nitridosilicates doped with Eu2+ or Ce3+ play an important role in saving energy by converting the blue light of (In,Ga)N-LEDs. Although nitridosilicates are known for great structural variety based on covalent anionic Si-N networks, elemental variety is restricted. Presenting a significant extension of the latter, this work describes a general access to open-shell transition-metal nitridosilicates. As a proof-of-principle, the first iron nitridosilicate, namely Fe2 Si5 N8 , was prepared by exchanging Ca2+ in α-Ca2 Si5 N8 applying a FeCl2 melt (salt metathesis). The title compound was analyzed by powder X-ray diffraction, EDX, ICP-OES, combustion analysis, TG/DSC, Mossbauer spectroscopy and magnetic susceptibility measurements. Furthermore, the structure of α-Ca2 Si5 N8 was determined at 1073 and 1173 K confirming the anionic network of α-Ca2 Si5 N8 providing possible migration pathways for the ion-exchange reaction.
- Subjects :
- chemistry.chemical_classification
Materials science
010405 organic chemistry
Doping
Salt (chemistry)
General Chemistry
General Medicine
Metathesis
010402 general chemistry
Magnetic susceptibility
01 natural sciences
Catalysis
0104 chemical sciences
Crystallography
Transition metal
chemistry
Covalent bond
Mössbauer spectroscopy
Open shell
Subjects
Details
- ISSN :
- 00448249
- Volume :
- 130
- Database :
- OpenAIRE
- Journal :
- Angewandte Chemie
- Accession number :
- edsair.doi.dedup.....990fdc28de6563cbcd219c203b5baf61