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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

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1865-7117
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A new stacking variant of Na2Pt(OH)6

Gohil S. Thakur
  • Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, Dresden 01187, Germany
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/ Hans Reuter
  • Institut für Chemie neuer Materialien, Universität Osnabrück, Barbarastraße 7, 49076 Osnabrück, Germany
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/ Claudia Felser
  • Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, Dresden 01187, Germany
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/ Martin Jansen
  • Corresponding author
  • Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, Dresden 01187, Germany
  • Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany
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Published Online: 2018-09-21 | DOI: https://doi.org/10.1515/znb-2018-0125

Abstract

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 Å. 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.

Keywords: crystal structure determination; hydrothermal synthesis; platinate(IV)

Dedicated to: Professor Bernt Krebs on the occasion of his 80th birthday.

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About the article

Received: 2018-06-25

Accepted: 2018-08-30

Published Online: 2018-09-21


Citation Information: Zeitschrift für Naturforschung B, 20180125, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-2018-0125.

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