Characterization of the two rubidium sites in Rb2CrO4 by Rb-87 single-crystal NMR

被引：17

作者：

Vosegaard, T ^{[1
]}

Byriel, IP ^{[1
]}

Jakobsen, HJ ^{[1
]}

机构：

[1] UNIV AARHUS,DEPT CHEM,INSTRUMENT CTR SOLID STATE NMR SPECT,DK-8000 AARHUS C,DENMARK

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 44期

关键词：

D O I：

10.1021/jp9720247

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The two crystallographically distinct sites in Rb2CrO4 are characterized in terms of their Rb-87 quadrupole coupling and chemical shielding anisotropy (CSA) interactions employing Rb-87 single-crystal NMR. Accurate values for the quadrupole coupling and CSA parameters are reported for both rubidium sites along with the direction cosines describing the orientation of the tensors for the NMR interactions with respect to the Rb2CrO4 crystal frame. The parameters for site 1 represent the first accurate investigation of this site, while the parameters for site 2 compare excellently with those previously reported. Some remarkable similarities are observed between the present parameters for Rb2CrO4 and the Cs-133 parameters determined from recent magic-angle spinning and single-crystal Cs-133 NMR studies for the isomorphous Cs2CrO4.

引用

页码：8955 / 8958

页数：4

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