Nanometer-sized molecular complexes

被引：3

作者：

Papaefthymiou, GC ^{[1
]}

机构：

[1] MIT, Francis Bitter Natl Magnet Lab, Cambridge, MA 02139 USA

来源：

HYPERFINE INTERACTIONS | 1998年 / 113卷 / 1-4期

关键词：

D O I：

10.1023/A:1012696204942

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Nanosized molecular complexes synthesized as monodispersed, X-ray structurally characterizable chemical entities afford ideal experimental systems for the study of the properties of matter at the molecular/solid state boundary. Representative studies of an undecanuclear, [Fe11O6(OH)(6)(O2CPh)(15)]. 6THF, and two heptadecanuclear; [Fe16MO10(OH)(10)(O2CPh)(20)] where M = Mn2+, Fe2+, complexes are presented. Low temperature, high field Mossbauer data give compelling experimental evidence that deviation from simple paramagnetism and onset of superparamagnetic-like behavior can occur in molecular complexes containing 10 to 20 iron ions participating in pseudo three-dimensional superexchange interactions.

引用

页码：357 / 367

页数：11

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