1452389-95-5Relevant academic research and scientific papers
Structural diversity of Ni(ii) coordination polymers containing dipyridyl amide and angular dicarboxylate ligands: Synthesis, structures and magnetism
Liao, Yu-Hung,Hsu, Wayne,Yang, Chun-Chuen,Wu, Can-Yu,Chen, Jhy-Der,Wang, Ju-Chun
, p. 3974 - 3983 (2013)
Four new Ni(ii) coordination polymers containing dipyridyl amide and angular dicarboxylate ligands, {[Ni(L1)(MBA)]·2H 2O}∞ [L1 = N,N′-di(4-pyridyl)- adipoamide; H2MBA = diphenylmethane-4,4′-dicarboxylic acid], 1, {[Ni(L1)(OBA)]·H2O}∞ [H 2OBA = 4,4′-oxybis(benzoic acid)], 2, {[Ni(L 1)(SDA)]·2H2O}∞ (H2SDA = 4,4′-sulfonyldibenzoic acid), 3, and {[Ni2(L 2)(SDA)2]·6H2O}∞ [L2 = N,N′-di(4-pyridyl)suberoamide], 4, have been synthesized by hydrothermal reactions and were structurally characterized by single crystal X-ray diffraction analyses. Complex 1 is a 1D → 2D polycatenane derived from the helical channels, and the 2D layers are further mutually interdigitated, whereas complex 2 forms 2D rhombic grids with the (6,4) topology, which are interwoven with each other to give a two fold 2D → 2D interpenetrating net. Complex 3 shows the 1D looped chain structure, and complex 4 shows 2D layers which catenate to each other to form a 2D → 3D inclined polycatenation framework with the new (42·6 8·8·104)(4)2 topology. The C-X-C (X = CH2, 1; O, 2; and SO2, 3 and 4) angles are important in determining the structural diversity. Complex 1 exhibits a different magnetic reaction in the ZFC and FC processes, revealing the existence of a meta-state of ferromagnetic ordering, whereas the activation energies of spin-orbit coupling and antiferromagnetic interaction of complexes 2-4 are directed by the N...N and Ni...Ni distances, respectively.
