The iron selenide compound Ba2F2Fe(1.5)Se3 was synthesized by a high-temperature ceramic method. The single-crystal X-ray structure determination revealed a layered-like structure built on [Ba2F2](2+) layers of the fluorite type and iron selenide layers [Fe(1.5)Se3](2-). These [Fe1.5Se3](2-) layers contain iron in two valence states, namely, Fe(II+) and Fe(III+) located in octahedral and tetrahedral sites, respectively. Magnetic measurements are consistent with a high-spin state for Fe(II+) and an intermediate-spin state for Fe(III+). Moreover, susceptibility and resistivity measurements demonstrate that Ba2F2Fe(1.5)Se3 is an antiferromagnetic insulator.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.inorgchem.5b02662 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Solar-Driven Sulfide Oxidation Paired With CO Reduction Based on Vacancies Engineering of Copper Selenide.
Small
December 2024
Institute of Photoelectronic Thin Film Devices and Technology, Renewable Energy Conversion and Storage Center, State Key Laboratory of Photovoltaic Materials and Cells, Nankai University, Tianjin, 300350, P. R. China.
Photovoltaic-driven electrochemical (PV-EC) carbon dioxide reduction (COR) coupled with sulfide oxidation (SOR) can efficiently convert the solar energy into chemical energy, expanding its applications. However, developing low-cost electrocatalysts that exhibit high selectivity and efficiency for both COR and SOR remains a challenge. Herein, a bifunctional copper selenide catalyst is developed with copper vacancies (v-CuSe) for the COR-SOR.
View Article and Find Full Text PDFWater Encapsulated [(FeSe)Se] Clusters in [Na(HO)][FeSe].
Inorg Chem
December 2024
Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 9-13 (D), 81377 München, Germany.
[Na(HO)][FeSe] was synthesized using hydrothermal methods and characterized by single-crystal X-ray diffraction, Fe Mössbauer spectroscopy, magnetization, and muon spin resonance (μSR) measurements. The cubic crystal structure (space group 23, = 11.785 Å, = 2) contains heterocubane-type clusters with symmetry.
View Article and Find Full Text PDFAmino-acid surface modulation of cobalt-tin sulfide and band broadening in cobalt-iron selenide heterostructure for high-performing asymmetric supercapacitor.
J Colloid Interface Sci
November 2024
School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China. Electronic address:
Controlled synthesis of hierarchical flowerlike cobalt tin sulfide (SnCoS) is successfully obtained using the chelation of the biomolecule l-asparagine with cobalt-tin metal cations by a hydrothermal technique. l-asparagine plays a crucial role as an inducer and a good structure-directing activity. Subsequently, pine needle-shaped cobalt iron selenium (FeCoSe) is tightly deposited on the SnCoS surface to construct cobalt tin sulfide coated with cobalt iron selenide (FeCoSe@SnCoS) heterostructure, which has exposed more active sites and the most abundant channels for electron/ion transfer.
View Article and Find Full Text PDFMorphology and Luminescence Properties of Transition Metal Doped Zinc Selenide Crystals.
J Fluoresc
November 2024
University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, MD, 21250, USA.
Zinc selenide is an excellent matrix material to dope with rare-earth and transition metal to achieve mid-infrared luminescence to develop high power lasers. The luminescence, morphology and refractive index is significantly affected by the doping and defects generated due to size and valency of dopants, concentration, growth process and convection during the growth. The aim of the study is to investigate effect of point and line defects generated due to low doping of iron and chromium on the emission and morphology of the zinc selenide.
View Article and Find Full Text PDFDesign and Optimization of Iron-Based Superionic-Like Conductor Anode for High-Performance Lithium/Sodium-Ion Batteries.
Small Methods
September 2024
Key Laboratory of Advanced Structural Materials, Ministry of Education & Advanced Institute of Materials Science, and School of Materials Science and Engineering, Changchun University of Technology, Changchun, 130012, China.
Metal selenides have received extensive research attention as anode materials for batteries due to their high theoretical capacity. However, their significant volume expansion and slow ion migration rate result in poor cycling stability and suboptimal rate performance. To address these issues, the present work utilized multivalent iron ions to construct fast pathways similar to superionic conductors (Fe-SSC) and introduced corresponding selenium vacancies to enhance its performance.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!