IV-U-1 S=1 New Haldane Gap Systems and Spin Glass Behaviors: Syntheses, Structures and Magnetic Properties of Linear-Chain Ni(II) Complexes

Toshio MANABE, Tachi. OHISHI (Nagoya Univ.), Masahiro YAMASHITA (Nagoya Univ. and IMS), Tetsuya TAKEUCHI (Osaka Univ.), Taturu YOSHIDA (Nakanihon Automotive College), Yan YU, Zentaro HONADA and Koichi KATSUMATA (RIKEN)

[Synth. Met. 85, 1717 (1997)]

A series of compounds, [Ni(AA)2X]Y (AA= diamines etc; X=N3 and NO2; Y=ClO4, PF6 etc) with S=1 have been synthesized, and their magnetic properties and crystal structures have been investigated. They have linear-chain structures. It has been found that the magnitude of the Haldane gaps can be controlled by substituting the bridging groups (X) and in-plane ligands (AA). On the other hand, [Ni([15]aneN4)N3]-PF6, [Ni([14]aneN4)N3]ClO4·H2O and [Ni(en)2NO2]BF4 show spin glass behaviors.


back to CONTENTS of Research Activities IV