Syntheses, Crystal Structure, and Magnetic Properties of a Self‐assembling Dicopper(II) Helicate with Novel Bipyridine Ligand | Zendy

Kao HsienChang | Zendy; Wang YiChun | Zendy; Wang WenJwu | Zendy

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Syntheses, Crystal Structure, and Magnetic Properties of a Self‐assembling Dicopper(II) Helicate with Novel Bipyridine Ligand

Author(s) -

Kao HsienChang,

Wang YiChun,

Wang WenJwu

Publication year - 2012

Publication title -

journal of the chinese chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.329

H-Index - 45

eISSN - 2192-6549

pISSN - 0009-4536

DOI - 10.1002/jccs.201200015

Subject(s) - chemistry , crystallography , perchlorate , ligand (biochemistry) , denticity , copper , antiferromagnetism , crystal structure , octahedron , bipyridine , stereochemistry , ion , receptor , organic chemistry , biochemistry , physics , condensed matter physics

A novel double helical dicopper(II) complex was synthesized by reaction of a polydentate ligand L = 2,2′‐bipyridyl‐6,6′‐bis(2‐acetylpyrazinohydrazone) with copper(II) perchlorate in CH 3 CN. The self‐assembling process was studied by UV‐Vis spectrometric titration experiments which revealed the formation of dinuclear complexes [Cu 2 L 2 ](ClO 4 ) 4 . The structure of dicopper double‐helicate was confirmed by X‐ray diffractometry. Each copper(II) center occupies a distorted octahedral environment. Variable‐temperature magnetic measurements reveal weak antiferromagnetic interactions between Cu(II) ion centers with J = −0.63 cm −1 .

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