Structural investigation of ScAuSi and ScAuGe using 45Sc solid state NMR

被引：0
|
作者：
Sebastian, C. Peter
Zhang, Long
Eckert, Hellmut
Poettgen, Rainer
机构：
[1] Univ Munster, Inst Phys Chem, D-48149 Munster, Germany
[2] Univ Munster, NRW Grad Sch Chem, D-48149 Munster, Germany
[3] Univ Munster, NRW Grad Sch Chem, D-48149 Munster, Germany
[4] Univ Munster, Inst Anorgan & Analyt Chem, D-48149 Munster, Germany
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2007年 / 62卷 / 02期
关键词：
scandium; intermetallics; crystal chemistry; solid state NMR;
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The hexagonal scandium compounds ScAuSi (P (6) over bar m2, a = 421.7(l), c = 680.7(1) pm) and ScAuGe (P6(3)mc a 431.03(9), c = 685.5(1) pm) were synthesized in X-ray pure form via arc-melting of the elements. The structures are derived from the AlB2-type. The gold and silicon (germanium) atoms build up strongly puckered layers of Au3Si3 and Au3Ge3 hexagons. Due to a different puckering pattern and stacking sequence of the hexagons, the ScAuGe structure has one and the ScAuSi structure two crystallographically independent scandium sites, which can be unambiguously distinguished on the basis of Sc-45-Si-29 magnetic dipole-dipole interactions measured in a site selective fashion on an isotopically enriched material by solid state NMR.
引用
收藏
页码：173 / 176
页数：4
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