新型磷酸盐卤化物的合成与表征
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- 英文论文题名：Syntheses and Characterization of Novel Phosphate Halides
- 论文作者：裴大婷 ; 孙炜 ; 黄雅熙 ; 孙志梅 ; 潘元明 ; 宓锦校
- 英文论文作者：Da-Ting Pei ; Wei Sun ; Ya-Xi Huang ; Zhi-Mei Sun ; Yuanming Pan ; Jin-Xiao Mi ; Dept.of Materials Science and Engineering ; Xiamen University ; Dept.of Geological Sciences ; University of Saskatchewan ; School of Materials Science and Engineering ; Beihang University
- 年：2016
- 作者机构：厦门大学材料学院;Dept. of Geological Sciences,University of Saskatchewan;北京航空航天大学材料科学与工程学院;
- 论文关键词：磷酸盐卤化物 ; 多酸少水合成法 ; 磁性 ; 热分析残余物 ; 晶体结构测定
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第十六分会：晶体工程
- 语种：中文
- 分类号：O611.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第十六分会 ; 晶体工程
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：193k
- 原文格式：D
- 会议级别：全国
摘要
利用多酸少水法合成出了两种新型磷酸盐卤化物:BaMn~Ⅲ[PO_4]FCl(1)and BaMn~Ⅲ[PO_4]F_2(2),对其进行了晶体结构和性能的分析表征。大半径氯取代氟导致其晶体结构由化合物(2)的八面体链状结构演化为孤立八面体结构。相应地导致它们在红外、热稳定性及磁性等方面形成明显的差异,也使锰氧氟八面体共角顶相连的化合物(2)具有更强的反铁磁作用。通过TG-DTA热分析残余物的粉末X射线衍射分析,获得另一种新型磷酸盐卤化物BaMn~Ⅱ[PO_4]F(3)。
Two new phosphate halides BaMn~Ⅲ[PO_4]FCl(1) and BaMn~Ⅲ[PO_4]F_2(2),have been synthesized under hydrothermal conditions.Structural characterizations show that both new compounds adopt layered structures but with different polyhedral linkages.Introduction of Cl into Compound(1) results in isolated hemimorphic[MnO_4FCl]octahedra,different from the chain of[MnO_4F_2]/[MnO_2F_4]octahedra in Compound(2).These compounds have significantly different molecular vibration modes and thermal stabilities.Magnetic measurements reveal that Compound(2) has larger antiferromagnetic interactions than Compound(1),because the former has strong interactions between Mn~(3+)-Mn~(3+) ions within corner-shared Mn~(3+)-octahedral chains whereas the latter only possesses isolated Mn~(3+)-octahedra.Both compounds transform to a new orthorhombic compound BaMn~Ⅱ(PO_4)F(3)after thermal decomposition.
Two new phosphate halides BaMn~Ⅲ[PO_4]FCl(1) and BaMn~Ⅲ[PO_4]F_2(2),have been synthesized under hydrothermal conditions.Structural characterizations show that both new compounds adopt layered structures but with different polyhedral linkages.Introduction of Cl into Compound(1) results in isolated hemimorphic[MnO_4FCl]octahedra,different from the chain of[MnO_4F_2]/[MnO_2F_4]octahedra in Compound(2).These compounds have significantly different molecular vibration modes and thermal stabilities.Magnetic measurements reveal that Compound(2) has larger antiferromagnetic interactions than Compound(1),because the former has strong interactions between Mn~(3+)-Mn~(3+) ions within corner-shared Mn~(3+)-octahedral chains whereas the latter only possesses isolated Mn~(3+)-octahedra.Both compounds transform to a new orthorhombic compound BaMn~Ⅱ(PO_4)F(3)after thermal decomposition.
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