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Construction of a Novel Topological Frustrated System: A Frustrated Metal Cluster in a Helical Space
Author(s) -
Ishikawa Ryuta,
Nakano Motohiro,
Fuyuhiro Akira,
Takeuchi Tetsuya,
Kimura Shojiro,
Kashiwagi Takanari,
Hagiwara Masayuki,
Kindo Koichi,
Kaizaki Sumio,
Kawata Satoshi
Publication year - 2010
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201000676
Subject(s) - cluster (spacecraft) , anisotropy , magnetization , condensed matter physics , spin (aerodynamics) , crystallography , magnetic anisotropy , space (punctuation) , metal , magnetic field , topology (electrical circuits) , physics , materials science , chemistry , quantum mechanics , mathematics , computer science , combinatorics , thermodynamics , programming language , operating system , metallurgy
Abstract A novel topologically frustrated pentanuclear cluster helicate [{Cu II (μ‐L) 3 } 2 Cu II 3 (μ 3 ‐OH)] 3+ (L − =3,5‐bis(2‐pyridyl)pyrazolate) has been synthesized and characterized. This cluster has a helical arrangement of ligands around the central metal core. Dzyaloshinsky–Moriya interactions are essential components to observe a gradual magnetization and forbidden transitions of high‐field/multi‐frequency (HF/MF)‐ESR. The origin of the magnetic anisotropy of this compound is influenced by its helical spin structure, and consequently, the Cu 5 ‐cluster helicate introduces a unique magnetic anisotropy. This observation is a direct evidence of the topological part of the new spin phase in a magnetic system.