title: Heterometallic 3d-4f coordination polymers based on 1,4,7-triazacyclononane-1,4,7-triyl-tris(methylenephosphonate).
abstract: Five heterometallic 3d-4f coordination polymers based on 1,4,7-triazacyclononane-1,4,7-triyl-tris(methylenephosphonic acid) (notpH6) are reported. Compounds [FeLn(notpH)(H2O)4]ClO4·5H2O [Ln = Nd (FeNd), Gd (FeGd), Sm (FeSm), Eu (FeEu)] are isostructural. All show layer structures in which the Fe(notpH)(2-) unit serves as a metalloligand to link four equivalent Ln(III) ions into a layer. Compound [CuLa(notpH2)(H2O)2]ClO4·3H2O (CuLa) displays a chain structure, where the Cu(notpH2)(2-) unit connects the La(III) ions into a chain. The magnetic properties of FeLn are studied.
authors.affiliation: State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China.
authors.forename: Yan-Hui
authors.initials: YH
authors.lastname: Su
authors.forename: Song Song
authors.initials: SS
authors.lastname: Bao
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Zheng