55Mn NMR spectra of Mn12 single-molecule magnets:: Single crystal versus aligned powder studies

被引：9
作者：
Harter, AG
Chakov, NE
Achey, R
Reyes, A
Kuhns, P
Christou, G
Dalal, NS [1 ]
机构：
[1] Florida State Univ, Dept Chem & Bioichem, Tallahassee, FL 32306 USA
[2] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA
[3] Univ Florida, Dept Chem, Gainesville, FL 32611 USA
来源：
POLYHEDRON | 2005年 / 24卷 / 16-17期
关键词：
single-molecule magnets; Mn-55; NMR; single crystal; aligned powder;
D O I：
10.1016/j.poly.2005.03.117
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
X-ray structural, magnetization and Mn-55 single crystal NMR investigations of Mn12O12 (CH2BrCOO)(16)(4H(2)O) center dot 4CH(2)Cl(2), indicate that this highly symmetric (11) lattice, devoid of hydrogen bonding of the Mn-12-framework with the molecules of lattice hydration, might be an improved model for studying single-molecule magnetism. Single crystal NMR yield much enhanced NMR data as compared to magnetically oriented powders, enable determination of Mn-55 hyperfine and quadrupole couplings, and show that the oriented powder samples do not represent an authentic crystal picture. (c) 2005 Published by Elsevier Ltd.
引用
收藏
页码：2346 / 2349
页数：4
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