Ce 4 B 2 C 2 F 0.14 H 2.26 : Cerium Borocarbides with Fluoride and Hydride Interstitials Grown from Ce/Cu Flux
Ce 4 B 2 C 2 F 0.14 H 2.26 : Cerium Borocarbides with Fluoride and Hydride Interstitials Grown from Ce/Cu Flux
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Ce 4 B 2 C 2 F 0.14 H 2.26 ：由 Ce/Cu 助熔剂生长的具有氟化物和氢化物填隙的硼碳化铈
DOI：
10.1021/acs.cgd.3c00512
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发表时间：
2023
影响因子：
3.8
通讯作者：
Latturner, Susan E.
中科院分区：
文献类型：
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作者：
Larson, James T.;Hoffmann, Christina;Latturner, Susan E.
通过在氟碳化合物的存在下进行金属助熔剂生长，将氟化物间隙原子引入到金属间化合物结构中。癸基联苯和蒽与硼在由铈和铜组成的熔体中反应，产生Ce4B2C2F0.14H2.26晶体，其是先前报道的Ce4B2C2H2.42的氟化类似物。用单晶X射线衍射和中子衍射证实了氟化物和氢化物的位置和占位。氟化物与氢化物在被铈阳离子包围的八面体间隙位点中混合;另外的氢化物离子占据四面体位点。磁化率显示的变化，从倾斜的反铁磁有序报告的氢化物顺磁行为氟取代后。
Fluoride interstitials were introduced into an intermetallic structure by carrying out metal flux growth in the presence of a fluorocarbon. Decafluorobiphenyl and anthracene were reacted with boron in a melt composed of cerium and copper, yielding crystals of Ce4B2C2F0.14H2.26, a fluorinated analogue of previously reported Ce4B2C2H2.42. The siting and occupancies of the fluoride and hydride interstitials were confirmed using both single-crystal X-ray diffraction and neutron diffraction. The fluoride mixes with the hydride in an octahedral interstitial site surrounded by cerium cations; additional hydride ions occupy the tetrahedral sites. Magnetic susceptibility shows a change from canted antiferromagnetic ordering reported for the hydride to paramagnetic behavior upon fluorine substitution.