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Author Benndorf, Christopher ♦ Hohmann, Andrea ♦ Schmidt, Peer ♦ Eckert, Hellmut ♦ Johrendt, Dirk
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ CHEMICAL SHIFT ♦ CRYSTALLOGRAPHY ♦ ELECTRONIC STRUCTURE ♦ LEAD ♦ NMR SPECTRA ♦ NUCLEAR MAGNETIC RESONANCE ♦ PHOSPHORUS ♦ PHOSPHORUS 31 ♦ POLYCRYSTALS ♦ PYROLYSIS ♦ SOLIDS ♦ SPECTROSCOPY ♦ VAPOR PRESSURE
Abstract Phase pure polycrystalline PbP{sub 7} was prepared from the elements via a lead flux. Crystalline pieces with edge-lengths up to 1 mm were obtained. The assignment of the previously published {sup 31}P solid state NMR spectrum to the seven distinct crystallographic sites was accomplished by radio-frequency driven dipolar recoupling (RFDR) experiments. As commonly found in other solid polyphosphides there is no obvious correlation between the {sup 31}P chemical shift and structural parameters. PbP{sub 7} decomposes incongruently under release of phosphorus forming liquid lead as remainder. The thermal decomposition starts at T>550 K with a vapor pressure almost similar to that of red phosphorus. Electronic structure calculations reveal PbP{sub 7} as a semiconductor according to the Zintl description and clearly shows the stereo-active Pb-6s{sup 2} lone pairs in the electron localization function ELF. - Graphical abstract: Coordination of the lead atoms in PbP{sub 7}.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-03-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 235


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