Crystal structure of poly[bis(μ2-2,6-bis(1-imidazoly)pyridine-κ2 N,N′)-bis(thiocyanato-κ1 N)copper(II)] dithiocyanate, C24H18CuN12S2

C24H18CuN12S2, monoclinic, P21/c (no. 4), a = 11.038(2) Å, b = 8.9312(18) Å, c = 16.083(5) Å, β = 125.66(2)°, V = 1288.2(6) Å3, Z = 2, R gt (F) = 0.0265, wR ref (F 2) = 0.0974, T = 293 K.

Crystal structure of [aqua-(4-iodopyridine-2,6-dicarboxylato-κ3 O,N,O′)-(1,10-phenanothroline-κ2 N,N′)copper(II)] dihydrate, C19H16O7N3CuI

C19H16O7N3CuI, orthorhombic, Pbca (no. 61), a = 12.5772(2) Å, b = 17.3473(3) Å, c = 18.8445(3) Å, Z = 8, V = 4111.50(12) Å3, R gt (F) = 0.0310, wR ref (F 2) = 0.0775, T = 289 K.

Crystal structure of bis(µ2- 4-iodopyridine-2,6-dicarboxylato-κ3 O:N:O′)-bis(4-iodopyridine-2,6-dicarboxylato-κ3 O:N:O′)-bis(µ2-1-(4-pyridyl)piperazine-κ2 N:N′)-hexa-aqua-tetra-copper(II), C46H46Cu4I4N10O22

C46H46Cu4I4N10O22, monoclinic, P21/c (no. 14), a = 10.6637(2) Å, b = 18.8249(6) Å, c = 14.8626(5) Å, β = 93.853(3)°, Z = 2, V = 2976.81(15) Å3, R gt (F) = 0.0361, wR ref (F 2) = 0.0726, T = 291 K.

Crystal structure of trans-tetraaqua-bis{2-carboxy-4-((5-carboxypyridin-3-yl)oxy)benzoato-κ1 N}cobalt(II) dihydrate C28H28O20N2Co

C28H28O20N2Co, triclinic, P 1 ‾ $P‾{1}$ (no. 2), a = 7.7951(3) Å, b = 9.3511(4) Å, c = 11.3352(4) Å, β = 105.499(4)°, Z = 1, V = 762.19(6) Å3, R gt (F) = 0.0339, wR ref (F 2) = 0.0798, T = 293.0 K.

Crystal structure of poly[diaqua-(μ 2-2,5-dihydroxyterephthalato-κ2 O:O′)(μ 2-bis(4-pyridylformyl)piperazine-κ2 N:N′)cadmium(II)] dihydrate, C24H28CdN4O12

C24H28CdN4O12, monoclinic, P21/c (no. 14), a = 11.0801(4) Å, b = 8.3925(3) Å, c = 13.9503(5) Å, β = 102.810(3)°, Z = 2, V = 1353.89(8) Å3, R gt (F) = 0.0273, wR ref (F 2) = 0.0633, T = 291 K.

Crystal structure of catena-poly[aqua-(4-iodopyridine-2,6-dicarboxylato-κ3 N,O,O′)-(μ2-4-amino-4H-1,2,4-triazole-κ2 N:N′) copper(II)], C9H8N5O5CuI

C9H8N5O5CuI, orthorhombic, Pbca (no. 61), a = 11.0801(4) Å, b = 6.8489(3) Å, c = 35.3975(13) Å, Z = 8, V = 2686.20(18) Å3, R gt (F) = 0.0325, wR ref (F 2) = 0.0707, T = 292 K.

Record Complexity in the Polycatenation of Three Porous Hydrogen-Bonded Organic Frameworks with Stepwise Adsorption Behaviors

Hydrogen-bonded organic frameworks (HOFs) show great potential in many applications, but few structure-property correlations have been explored in this field. In this work, we report that self-assembly of a rigid and planar ligand gives rise to flat hexagonal honeycomb motifs which are extended into undulated two-dimensional (2D) layers and finally generate three polycatenated HOFs with record complexity. This kind of undulation is absent in the 2D layers built from a very similar but nonplanar ligand, indicating that a slight torsion of ligand produces overwhelming structural change. This change delivers materials with unique stepwise adsorption behaviors under a certain pressure originating from the movement between mutually interwoven hexagonal networks. Meanwhile, high chemical stability, phase transformation, and preferential adsorption of aromatic compounds were observed in these HOFs. The results presented in this work would help us to understand the self-assembly behaviors of HOFs and shed light on the rational design of HOF materials for practical applications.

Cu(i) Iodide coordination polymers with aromatic thioamides

The reaction of 4-pyridinethiobenzamide (PyTBA) with CuI and KI aqueous solution in acetone or THF under slow diffusion gives rise to the formation of single crystals of two coordination polymers [CuIPyTBA]_n·nS (S = acetone; 1/3THF).

Crystal-to-crystal transformation from a chain compound to a layered coordination polymer

Crystal-to-crystal transformation from a chain compound CuBr₂(1,4-dioxane)₂(H₂O)₂ to a layered coordination polymer (CuBr₂)₃(1,4-dioxane)₂ was observed with changes of crystal colour, cell parameters, space group, crystal structure, coordination environments of Cu²⁺, and enhanced antiferromagnetic interaction.

Toward a robust porous coordination polymer: the inhibition of mutual movement between interpenetrating sub-networks by introduction of multiple C–H⋯π interactions

We demonstrate that a robust porous coordination polymer can be achieved by introduction of multiple C–H⋯π interactions between diamonded sub-networks.

Syntheses, crystal structures and properties of three cyano-bridged one-dimensional coordination polymers based on macrocyclic metallic tectons

Three complexes based on macrocyclic metallic tectons and [Ni(CN)₄]²⁻ have been reported. Interestingly, complex 1 features an unexpected large porous structure with a pore size of 1 nm, which shows two-step adsorption of CO₂ gas at 195 K.

Peculiar phenomena of structural transformations triggered from a nickel coordination polymer

Four multi-dimensional nickel-based coordination polymers have been prepared, and their solvent-mediated and solid-state structural transformations have been observed and studied systematically.