Effect of dicarboxylates with different rigidity and length on crystal structures of cobalt(II) complexes derived from a semi-rigid tri-pyridyl-bis-amide ligand

A novel two-dimensional cadmium(II) complex: poly[diaquatris(μ4-cyclohexane-1,4-dicarboxylato)bis[2-(pyridin-4-yl)-1H-benzimidazole]tricadmium(II)

“…(Ma, Abney & Lin, 2009;Zhang et al, 2010). Cyclohexanedicarboxylic acid is a flexible ditopic ligand which possesses three possible conformations of its two carboxylate groups: a,a-trans-chdcH 2 , e,e-trans-chdcH 2 and e,a-cis-chdcH 2 (see Scheme 1 in the Supporting information) and has been reported to be a good candidate for the self-assembly of coordination polymers due to its superior bridging ability and different coordination modes (Yoon et al, 2012;Su et al, 2012;Chen et al, 2014;Hao et al, 2014;Wang et al, 2014). It is a good strategy to select mixed ligands for the construction of coordination polymers.…”