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Polysulfur nitride, (SN)X, the first example of a polymeric metal

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  • Polymer Science
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Summary

Polymeric sulfur nitride, (SN) x , is an unusual substance, which although composed of non-metallic elements exhibits metallic properties and even becomes superconducting at very low. temperatures (0.3 K). The bonds between the polymeric chains are much weaker than within the chains. Therefore all electrical and mechanical properties are highly anisotropic. The preparation and crystal structure is described and a review is given of the physical investigations, especially of the electrical and optical properties and of the lattice dynamics. Parallels are drawn to the properties of organic polymers.

Zusammenfassung

Polyschwefelnitrid, (SN) x , ist eine ungewöliche Substanz, die, obwohl aus zwei Nichtmetallen aufgebaut, metallische Eigenschaften besitzt und bei sehr tiefen Temperaturen (0.3 K) sogar supraleitend wird. Die Bindungen zwischen den Ketten sind viel schwächer als die innerhalb der Ketten. Deshalb sind alle elektrischen und mechanischen Eigenschaften stark anisotrop. Es werden die Herstellung und die Struktur der Kristalle beschrieben und ein Überblick über die vorliegenden physikalischen Untersuchungen gegeben, insbesondere zu den elektrischen und optischen Eigenschaften und zur Gitterdynamik. Vergleiche werden gezogen zu den Eigenschaften organischer Polymere.

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  1. Kernforschungszentrum Karlsruhe, Gesellschaft mil beschränkter Haftung, Institut für Angewandte Kernphysik, Postfach 3640, D-7500, Karlsruhe, Germany

    L. Pintschovius

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Pintschovius, L. Polysulfur nitride, (SN)X, the first example of a polymeric metal. Colloid & Polymer Sci 256, 883–892 (1978). https://doi.org/10.1007/BF01383584

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