title: Structure and magnetic properties of a copper(II) coordination polymer based on azide, pyridine and homophthalic acid.
abstract: The azide anion is a short bridging ligand that has been used extensively to construct magnetic coordination polymers, and fundamental magneto-structural correlations have been substantiated by theoretical calculations. The copper(II) coordination polymer poly[bis(μ-azido-κ(2)N(1):N(1))(μ4-homophthalato-κ(4)O:O':O'':O''')bis(pyridine-κN)dicopper(II)], [Cu2(C9H6O4)(N3)2(C5H5N)2]n, was synthesized from homophthalic acid (2-carboxyphenylacetic acid), pyridine and azide (N3(-)) by a hydrothermal reaction. Single-crystal structure analysis indicated that it features a one-dimensional chain structure which is comprised of (μ1,1-N3(-))(μ-syn-syn-COO(-))2- and (μ1,1-N3(-))2-bridged tetranuclear Cu(II) units. Magnetic measurements revealed that the compound exhibits dominant antiferromagnetic behaviour.
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, Shandong 277160, People's Republic of China.
authors.forename: Jie
authors.initials: J
authors.lastname: Ma
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, Shandong 277160, People's Republic of China.
authors.forename: Deng-Feng
authors.initials: DF
authors.lastname: Wang
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, Shandong 277160, People's Republic of China.
authors.forename: Li-Qun
authors.initials: LQ
authors.lastname: Fan
authors.affiliation: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Kang
authors.initials: K
authors.lastname: Zhou
keywords: azide; coordination polymer; crystal structure; homophthalic acid; hydrothermal reaction; magnetic properties; tetranuclear CuII units