Low-Valent Lead Hydride and Its Extreme Low-Field (1)H NMR Chemical Shift.

Title	Low-Valent Lead Hydride and Its Extreme Low-Field (1)H NMR Chemical Shift.
Authors	J. Schneider; C.P. Sindlinger; K. Eichele; H. Schubert; L. Wesemann
Journal	J Am Chem Soc
DOI	10.1021/jacs.7b01856
Abstract	Although hydrides of the group 14 elements are well-known as versatile starting materials in many chemical transformations, a hydride of lead in oxidation state II is so far unknown. In this work, we finally complete the jigsaw puzzle by reporting the isolation of the first low valent organolead hydride. The thermolabile dimeric organolead hydride was synthesized at low temperature and features a hydride (1)H NMR signal (in solution 35.61 ppm; in the solid state 31.1 ppm) at the lowest field observed so far for a diamagnetic compound in agreement with quantum chemical predictions.
Citation	J. Schneider; C.P. Sindlinger; K. Eichele; H. Schubert; L. Wesemann.Low-Valent Lead Hydride and Its Extreme Low-Field (1)H NMR Chemical Shift.. J Am Chem Soc. 2017;139(19):65426545. doi:10.1021/jacs.7b01856

Related Elements

Lead

82 Pb 207.200000000 Lead

See more Lead products. Lead (atomic symbol: Pb, atomic number: 82) is a Block P, Group 14, Period 6 element with an atomic radius of 207.2. The number of electrons in each of Lead's shells is [2, 8, 18, 32, 18, 4] and its electron configuration is [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p². The lead atom has a radius of 175 pm and a Van der Waals radius of 202 pm. In its elemental form, lead has a metallic gray appearance. Lead occurs naturally as a mixture of four stable isotopes: ²⁰⁴Pb (1.48%), ²⁰⁶Pb (23.6%), ²⁰⁷Pb (22.6%), and ²⁰⁸Pb (52.3%). Elemental Lead Lead is obtained mainly from galena (PbS) by a roasting process. Anglesite, cerussite, and minim are other common lead containing minerals. Lead does occur as a free element in nature, but it is rare. It is a dense, soft metal that is very resistant to corrosion and poorly conductive compared to other metals. Its density and low melting point make it useful in applications such as electrolysis and industrial materials.