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A new stacking variant of Na2Pt(OH)6

机译:na2pt的新堆叠变体(oh)6

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摘要

A new stacking variant of sodium hexa-hydroxo platinate(IV), Na2Pt(OH)6, was synthesized and its structure elucidated through X-ray diffraction. The new polymorph was prepared by direct reaction of PtO2 with an excess of NaOH solution applying elevated oxygen pressure at 300°C. The structure consists of layers of edge sharing Pt(OH)6 and Na(OH)6 octahedra. These layers are separated by an edge-to-edge distance of ~2.4 ?. The packing of the hydroxide ions corresponds to the hcp sequence, the title compound thus may be regarded a cation ordered variant of the Brucite structure type. During heating above T~300°C all constitutional water is released, and anhydrous Na2PtO3 remains as the solid residue.
机译:合成了新的六氢羟基水解素(IV),Na 2PT(OH)6的新堆叠变体,并通过X射线衍射阐明其结构。 通过将PTO2直接反应在300℃下施加升高的氧气压力,通过将PTO 2直接反应来制备新的多晶型物。 该结构由边缘分享PT(OH)6和NA(OH)6八八面半八面部分组成。 这些层通过〜2.4的边缘到边缘距离分开?。 氢氧化物离子的包装对应于HCP序列,因此标题化合物可以暗合布鲁氏岩结构型的阳离子有序变体。 在加热期间,释放所有结构水,无水Na 2 PT3保持为固体残余物。

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