title: From metalloligand to interpenetrating channels: synthesis, characterization, and properties of a 2p-3d-4f heterometallic coordination polymer {[Na5Cu8Sm4(NTA)8(ClO4)8(H2O)22] x ClO4 x 8 H2O}n.
abstract: A novel 3D heteropolymetallic coordination polymer, {[Na(5)Cu(8)Sm(4)(NTA)(8)(ClO(4))(8)(H(2)O)(22)] x ClO(4) x 8 H(2)O}(n) (H(3)NTA = nitrilotriacetic acid), based on the metalloligand [Cu(NTA)](-), has been prepared and characterized by X-ray crystal diffraction. The single-crystal structure shows that the complex forms a 3D framework with interpenetrating 1D channels along the a and b axes, respectively. These channels construct 2D "tube net" layers in the ab plane. The temperature-dependent magnetic properties have been studied and showed the presence of antiferromagnetic couplings between Cu(II) ions. The investigation of ion exchange reveals that the uncoordinated perchlorate anions that filled in the channels can be exchanged by anions of tetrafluoroborate.
authors.affiliation: College of Chemistry and Chemical Engineering and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Jing-xin
authors.initials: JX
authors.lastname: Ma
authors.forename: Xiao-feng
authors.initials: XF
authors.lastname: Huang
authors.forename: You
authors.initials: Y
authors.lastname: Song
authors.forename: Xue-qin
authors.initials: XQ
authors.lastname: Song
authors.forename: Wei-sheng
authors.initials: WS
authors.lastname: Liu