title: Design and construction of coordination polymers based on 2,2'-dinitro-4,4'-biphenyldicarboxylate and semi-rigid N-donor ligands: diverse structures and magnetic properties.
abstract: Eight 2D and 3D coordination polymers, [Mn(NBPDC)(1,4-bimb)](n) (1), [Zn(NBPDC)(1,4-bimb)](n) (2), [Cd(NBPDC)(1,4-bimb)](n) (3), [Mn(2)(NBPDC)(2)(1,3-bimb)(H(2)O)](n) (4), {Zn(NBPDC)(1,3-bimb)}(n) (5), [Cd(2)(NBPDC)(2)(1,3-bimb)(2)(H(2)O)](n) (6), [Mn(NBPDC)(4,4'-bimbp)](n) (7), and [Cd(2)(NBPDC)(2)(4,4'-bimbp)(2)](n) (8), (NBPDC = 2,2'-dinitro-4,4'-biphenyldicarboxyl acid, 1,4-bimb = 1,4-bis(imidazol-1-ylmethyl) benzene, 1,3-bimb = 1,3-bis(imidazol-1-ylmethyl) benzene, and 4,4'-bimbp = 4,4'-(bis(imidazol-l-ylmethylene)) biphenyl), have been prepared and structurally characterized. In these coordination polymers, NBPDC and three N-donor ligands link different metal ions and SBUs to construct diverse architectures. Compounds 1 and 3 are isomorphic, showing a two-fold interpenetrating pcu topology. Compound 2 presents a 2D (4, 4) net. Compound 4 is a hex framework built by the linkage of ligands with infinite rod-shaped SBUs. Compound 5 presents a unprecedented eight-fold interpenetrating sra topology. Compound 6 exhibits a unique 2D {6(3)}{6(5).8} topology with four-fold interpenetrating structure. Compound 7 presents a 3D hex topology, and compound 8 shows a (4, 4) net. The magnetic properties of compounds 1, 4, and 7 have been characterized. Compound 1 displays interesting spin-canting antiferromagnetism and metamagnetism simultaneously. Compound 7 exhibits spin-canting antiferromagnetism.
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, People's Republic of China.
authors.forename: Baiyan
authors.initials: B
authors.lastname: Li
authors.forename: Fen
authors.initials: F
authors.lastname: Yang
authors.forename: Yiming
authors.initials: Y
authors.lastname: Zhang
authors.forename: Guanghua
authors.initials: G
authors.lastname: Li
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhou
authors.forename: Jia
authors.initials: J
authors.lastname: Hua
authors.forename: Zhan
authors.initials: Z
authors.lastname: Shi
authors.forename: Shouhua
authors.initials: S
authors.lastname: Feng