通过多核固体高分辨魔角旋转核磁共振研究NH₄⁺在其与Cs₂WS₄和Rb₂WS₄的固溶体中的位点偏好。

Site preferences of NH4+ in its solid solutions with Cs2WS4 and Rb2WS4 from multinuclear solid-state MAS NMR.

作者信息

Jakobsen Hans J, Bildsøe Henrik, Skibsted Jørgen, Hansen Michael R, Brorson Michael, Srinivasan Bikshandarkoil R, Bensch Wolfgang

机构信息

Danish Instrument Centre for Solid-State NMR Spectroscopy and Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, University of Aarhus, DK-8000 Aarhus C, Denmark.

出版信息

Inorg Chem. 2009 Mar 2;48(5):1787-9. doi: 10.1021/ic8023937.

DOI:10.1021/ic8023937

PMID:19235936

Abstract

Solid solutions of NH(4)(+) in Cs(2)WS(4) and Rb(2)WS(4) are obtained by precipitation/crystallization from aqueous solutions. By means of (14)N, (87)Rb, and (133)Cs magic angle spinning NMR, compositions and extraordinarily accurate NH(4)(+)-site preferences are established for these materials.

摘要

通过从水溶液中沉淀/结晶的方法，在Cs₂WS₄和Rb₂WS₄中获得了NH₄⁺的固溶体。借助¹⁴N、⁸⁷Rb和¹³³Cs魔角旋转核磁共振技术，确定了这些材料的组成以及NH₄⁺位点的异常精确偏好。