Solvent-Controlled Assembly of Manganese(II) Tetrachloroterephthalates with 1D Chain, 2D Layer, and 3D Coordination Architectures

Abstract

With solvent molecules participating in coordination systems, four new Mn II coordination polymers of the rigid ligand 2,3,5,6-tetrachloro-1,4-benzenedicarboxylic acid (H 2 BDC-Cl 4 ) have been obtained from different solvent media. Singlecrystal X-ray analysis indicates that the coordination arrays of 1-4 vary from 1D fishbone or zigzag chain for 1 or 2, 2D (4,4) layer for 3, to 3D SrAl 2 coordination network for 4, respectively. In {[Mn(BDC-Cl 4 )(py) 2 (H 2 O) 2 ](py) 2 } n (1) and {[Mn(BDC-Cl 4 )(MeOH) 3 ](MeOH)} n (2), pyridine/water (in 1) and MeOH (in 2) molecules act as the monodentate terminal ligands to fulfill the metal coordination spheres. In the case of {[Mn(BDC-Cl 4 )(dioxane)(H 2 O) 2 ](dioxane)} n (3), the aqua ligand is monodentate and the dioxane moiety displays unusual bridging bidentate mode, whereas for [Mn 5 (BDC-Cl 4 ) 5 (DMF) 5 ] n (4), three Mn II centers are connected by four BDC-Cl 4 ligands and two DMF molecules to constitute a trimeric unit. These secondary units are extended to the final 3D network with SrAl 2 (sra) topology. Significantly, the solvents play an essential role in the crystallization and construction of these coordination frameworks with distinct dimensionality and connectivity. The thermal and photoluminescence properties of complexes 1-4 in the solid state have also been discussed.

Crystal structure of catena-poly[bis(glycol-1 k2O,O')-(μ2- tetrafluoroterephthalato)zinc(II)], Zn(C8F4O4)(C2H6O2)2

“…Recent studies have shown the remarkable analogy of 1,4-BDC-type ligands with bulky methyl [4], fluorine [5], chlorine [6] or bromine [7] groups, since they not only provide astonishing thermal and chemical stability and stereo-chemical characteristics, but also prevent interpenetration phenomena of resultant polymeric networks. In the asymmetric unit, one Zn II ion lying on an inversion center [at (0 0 ½)] is coordinated by six oxygen atoms in anearly ideal octahedral configuration.…”

Syntheses, Crystal Structures and Properties of Two New Manganese(II) Coordination Polymers with Tetrafluorophthalate Ligands

“…Among the widely used organic solvents, DMF was proved to be a reliable binding guest molecule participating in coordination networks of Mn II and Cu II ions [29,30]. Its coordinating ability is better than that of EtOH, MeOH and the aqua ligand in mixed solvent media.…”

Crystal Structure and Luminescent Properties of Diverse Cadmium(II) Coordination Polymers Based on A Semirigid Multicarboxylate Ligand

“…Concurrently, the low-dimensional CPs could extend to 3D supramolecular network by hydrogen bonds and π-π aromatic interactions, which play key roles on the generation of novel supramolecular structures. [34][35][36] In this paper, a 1D zigzag chain CPs [Cd(HL)(H 2 O) 3 Single-crystal X-ray Diffraction Determination: The crystal structures were determined by single-crystal X-ray diffraction. The X-ray intensity data for the four compounds were collected with a computercontrolled Oxford Xcalibur E diffractometer with graphite monochromatic Mo-K α radiation (λ = 0.71073 Å) at 298 K. Final unit cell parameters were derived by global refinements of reflections obtained from integration of all the frame data.…”