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

被引：13
|
作者：
Garaga, Mounesha N.
Werner-Zwanziger, Ulrike
Zwanziger, Josef W. [1 ]
机构：
[1] Dalhousie Univ, Dept Chem, POB 15000, Halifax, NS B3H 4R2, Canada
来源：
INORGANIC CHEMISTRY | 2018年 / 57卷 / 02期
基金：
加拿大自然科学与工程研究理事会;
关键词：
NUCLEAR-MAGNETIC-RESONANCE; CHEMICAL-SHIFTS; SODIUM;
D O I：
10.1021/acs.inorgchem.7b02913
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The local environments around tellurium atoms in a series of tellurium oxide crystals were probed by Te-125 solid-state NMR spectroscopy. Crystals with distinct TeOn units (n from 3 to 6), including Na2TeO3, alpha-TeO2 and gamma-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 Te-125 chemical shift was found to exhibit a strong linear correlation with the Te coordination number. The Te-125 chemical-shift components (delta(11), delta(22), and delta(33)) of the TeO4 units were further correlated to the O-Te-O-bond angles. With the aid of Te-125 NMR, it is likely that these relations can be used to estimate the coordination states of Te atoms in unknown Te crystals and glasses.
引用
收藏
页码：892 / 898
页数：7
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