Topochemical Cross-Linking of the [Hf2N2] Layers with Sulfur in 伪-HfNBr

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• 作者：Shuai Zhang ; Mayumi Yoshikawa ; Kei Inumaru ; Shoji Yamanaka
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：September 16, 2013
• 年：2013
• 卷：52
• 期：18
• 页码：10571-10575
• 全文大小：399K
• 年卷期：v.52,no.18(September 16, 2013)
• ISSN：1520-510X

文摘

伪-HfNBr (space group Pmmn) isostructural with FeOCl consists of orthorhombic [Hf₂N₂] layers sandwiched by bromide layers. By the reaction with Na₂S at 750 掳C in a sealed glass tube, the 伪-type [Hf₂N₂] layers are topochemically cross-linked with sulfur to form 伪-Hf₂N₂S with a mutual shift of the layers in the ab plane by (a/2 + b/2) to crystallize in space group Immm and the lattice parameters a = 4.1422(1), b = 3.5058(1), and c = 11.4043(3) 脜. At a higher reaction temperature of 850 掳C, the 尾-type layered variant 尾-Hf₂N₂S with a double honeycomb network is obtained, which adopts the La₂O₂S structure with space group P3̅m1 and the lattice parameters a = 3.5805(1) and c = 6.4063(1) 脜.