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首页> 外文会议>International Conference on High Performance Structures and Materials >Study of double ionic disorder (cationic and anionic) and disorder of two kinds of tin(Ⅱ) (ionic and covalent) within the same material: the incredibly complex Ba_(1-x)Sn_xCl_(1+y)F_(1-y) solid solution and its study by Moessbauer spectroscopy
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Study of double ionic disorder (cationic and anionic) and disorder of two kinds of tin(Ⅱ) (ionic and covalent) within the same material: the incredibly complex Ba_(1-x)Sn_xCl_(1+y)F_(1-y) solid solution and its study by Moessbauer spectroscopy

机译：在同一材料内两种锡（Ⅱ）（离子和共价）的双离子疾病（阳离子和阴离子）和病症的研究：令人难以置信的复合Ba_（1-x）Sn_xcl_（1 + y）f_（1-y ）Moessbauer光谱的固体溶液及其研究

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A doubly disordered Ba_(1-x)Sn_xCl_(1+y)F_(1-y) solid solution has been prepared. X-ray diffraction shows that Ba and Sn are fully disordered on the Ba site of the BaClF structure. In addition, while the two anionic sites remain ordered, for y > 0 the y Cl in excess are disordered with the remaining (1-y) F on the F site, whereas for y < 0, the (-y) excess F are disordered with the remaining (1+y) Cl on the Cl site. ~(119)Sn Moessbauer spectroscopy showed the Ba_(1-x)Sn_xCl_(1+y)F_(1-y) solid solution is a truly unique material. Indeed, in addition to the rarity of being a doubly disordered solid solution over a wide range of chemical composition, it also exhibits a variable mixture of ionic tin(Ⅱ) (Sn~(2+) stannous ions, with a non-stereoactive lone pair) and covalently bonded tin(Ⅱ) (with a stereoactive lone pair). A new material, Ba_2SnCl_6, has been prepared and its crystal structure solved. It contains octahedrally coordinated Sn~(2+), with a perfectly non-stereoactive lone pair, for the first time in a chloride. This makes the lone pair a potential charge carrier.
机译：甲双无序Ba_（1-X）Sn_xCl_（1个+ y）的F_（1-y）的固溶体已经制备。 X射线衍射结果表明Ba和Sn被完全在BaClF结构的Ba位无序。此外，虽然两个阴离子部位保持有序，y> 0区在y氯过量的无序与剩余的（1-Y）的F上的F位点，而用于Y <0时，（-y）过量F是与剩余的（1 + y）的无序氯对氯站点。 〜（119）的Sn穆斯鲍尔光谱表明的Ba_（1-X）Sn_xCl_（1个+ y）的F_（1-y）的固溶体是一个真正独特的材料。事实上，在除了作为在宽范围的化学组成的双重无序固体溶液中的稀有性，它也表现出离子锡（Ⅱ）（SN〜（2+）的亚锡离子的可变混合物，用非stereoactive孤对）和共价键合的锡（ⅱ）（具有stereoactive孤对）。一种新的材料，Ba_2SnCl_6，已经制备和它的晶体结构来解决。它包含八面体配位的Sn〜（2+），与完全非stereoactive孤对，用于在氯化物的第一次。这使孤对潜在的电荷载体。

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