2D 31P solid state NMR spectroscopy, electronic structure and thermochemistry of PbP7

Synthesis of violet phosphorus with large lateral sizes to facilitate nano-device fabrications

“…The phosphorus fragments were then combined with molten lead to form lead polyphosphides at high temperatures. 25,26 During cooling to 530 °C, the critical temperature for the nucleation of violet phosphorus, the phosphorus was slowly separated from lead polyphosphides to form violet phosphorus. The as-produced violet phosphorus crystals were then wrapped with molten lead to form gray or silver-white bumps after furnace cooling (Fig.…”

Triclinic La7Zn2P11 with P3−, P24−, and P35− units: a combined study by 31P solid-state NMR spectroscopy and single crystal X-ray diffraction

“…The utility of one-and two-dimensional solid-state 31 P NMR for the structural elucidation of polyphosphide networks has been documented in the literature. [19][20][21][22][23][24][25][26][27][28][29] As chemical-shift information is usually insufficient for site assignments in polyphosphides, important information about bond connectivity and/ or spatial proximity is obtained by two-dimensional dipolar recoupling experiments, which correlate directly bonded P atoms via direct magnetic dipole-dipole interactions and indirect spin-spin coupling. The successful application of such experiments to the structural analysis of polyphosphides remains a big challenge to date, owing to the large spectral dispersion (chemical-shift differences and anisotropies), short spin-spin relaxation times (due to strong dipolar couplings between directly bonded P atoms) and rather long spin-lattice relaxation times (e.g., 850 s in Hittorf's Phosphorus 23 ) of the 31 P nuclei in many phosphorus clusters and networks.…”

“…The successful application of such experiments to the structural analysis of polyphosphides remains a big challenge to date, owing to the large spectral dispersion (chemical-shift differences and anisotropies), short spin-spin relaxation times (due to strong dipolar couplings between directly bonded P atoms) and rather long spin-lattice relaxation times (e.g., 850 s in Hittorf's Phosphorus 23 ) of the 31 P nuclei in many phosphorus clusters and networks. [19][20][21][22][23][24][25][26][27][28][29]…”

“…, 850 s in Hittorf's Phosphorus 23 ) of the 31 P nuclei in many phosphorus clusters and networks. 19–29…”

Crystal Growth by Chemical Vapor Transport: Process Screening by Complementary Modeling and Experiment

“…As a major advantage, the measurement is performed under similar experimental conditions such as the actual synthesis or transport attempt (closed systems). Recently, the concept of Hackert and Plies, called high temperature gas balance (HTGB), was pursued and enhanced to investigate phase formation processes in solid state reactions including volatile components, namely, elements of groups 15 and 16 of the periodic table. − …”