125Te NMR Probes of Tellurium Oxide Crystals: Shielding-Structure Correlations.

Title 125Te NMR Probes of Tellurium Oxide Crystals: Shielding-Structure Correlations.
Authors M.N. Garaga; U. Werner-Zwanziger; J.W. Zwanziger
Journal Inorg Chem
DOI 10.1021/acs.inorgchem.7b02913
Abstract

The local environments around tellurium atoms in a series of tellurium oxide crystals were probed by 125Te solid-state NMR spectroscopy. Crystals with distinct TeOn units (n from 3 to 6), including Na2TeO3, ?-TeO2 and ?-TeO2, Te2O(PO4)2, K3LaTe2O9, BaZnTe2O7, and CsYTe3O8 were studied. The latter four were synthesized through a solid-state process. X-ray diffraction was used to confirm the successful syntheses. The 125Te chemical shift was found to exhibit a strong linear correlation with the Te coordination number. The 125Te chemical-shift components (?11, ?22, and ?33) of the TeO4 units were further correlated to the O-Te-O-bond angles. With the aid of 125Te NMR, it is likely that these relations can be used to estimate the coordination states of Te atoms in unknown Te crystals and glasses.

Citation M.N. Garaga; U. Werner-Zwanziger; J.W. Zwanziger.125Te NMR Probes of Tellurium Oxide Crystals: Shielding-Structure Correlations.. Inorg Chem. 2017. doi:10.1021/acs.inorgchem.7b02913

Related Elements

Tellurium

See more Tellurium products. Tellurium (atomic symbol: Te, atomic number: 52) is a Block P, Group 16, Period 5 element with an atomic radius of 127.60. Tellurium Bohr ModelThe number of electrons in each of tellurium's shells is 2, 8, 18, 18, 6 and its electron configuration is [Kr] 4d10 5s2 5p4. Tellurium was discovered by Franz Muller von Reichenstein in 1782 and first isolated by Martin Heinrich Klaproth in 1798. In its elemental form, tellurium has a silvery lustrous gray appearance. The tellurium atom has a radius of 140 pm and a Van der Waals radius of 206 pm. Elemental TelluriumTellurium is most commonly sourced from the anode sludges produced as a byproduct of copper refining. The name Tellurium originates from the Greek word Tellus, meaning Earth.

Related Forms & Applications