Helices versus Zigzag Chains: One-Dimensional Coordination Polymers of AgI and Bis(4-pyridyl)amine

The crystal structure of poly[diaqua-(μ3-5-nitrobenzene-1,2,3-tricarboxylato-κ 3 O:O′:O′)-(μ2-4,4′-dipyridylamine-κ 2 N:N′)copper(II)], C38H30Cu3N8O20

C38H30Cu3N8O20, triclinic, P 1 ‾ $P\bar{1}$ (no. 2), a = 7.2659(3) Å, b = 11.7245(3) Å, c = 12.6837(4) Å, α = 77.466(3)°, β = 73.915(3)°, γ = 75.794(3)°, V = 993.50(6) Å3, Z = 1, R gt (F) = 0.0334, wR ref (F 2) = 0.0842, T = 291 K.

A new ladder-type silver(I) coordination polymer with 4,4'-bipyridine and 4-[(4-carboxybenzyloxy)methyl]benzoate ligands: synthesis, crystal structure, fluorescence properties and Hirshfeld surface analysis

A novel ladder-type coordination polymer (CP), poly[(μ-4,4'-bipyridine-κ²N:N'){μ-4-[(4-carboxybenzyloxy)methyl]benzoato-κO}silver(I)](Ag-Ag), [Ag(C₁₆H₁₃O₅)(C₁₀H₈N₂)]_n or [Ag(HL)(4,4'-bpy)]_n {H₂L is 4,4'-[oxybis(methylene)]dibenzoic acid and 4,4'-bpy is 4,4'-bipyridine}, was synthesized using hydrothermal methods. The complex was characterized by IR spectroscopy, elemental analysis and single-crystal X-ray diffraction, and is a ladder-type CP which exhibits an obvious Ag-Ag interaction. The legs of the ladder are formed by parallel 4,4'-bipy ligands and silver ions, and the rungs are constructed by Ag-Ag interactions. A Hirshfeld surface analysis was carried out and is discussed in detail. The complex also displays favourable fluorescence properties.

Magnetostructural relationships in polymorphic ethylmalonate-containing copper(ii) coordination polymers

Three ethylmalonate-containing non-centrosymmetric copper(ii) coordination polymers with magnetic properties ranging from antiferromagnetism to ferromagnetic ordering are synthetized under nearly identical conditions.

The role of solvents in framework dimensionality and their effect on band gap energy

Solvents play a crucial role towards the dimensionality and band gap energy of hybrid framework materials.

Temperature-induced one-dimensional chiral Ag(i) linear chains and left-handed 21 helices: DFT studies, luminescence and SHG response

Two pairs of chiral coordination polymers have been synthesized with the same materials at 25 and 90 °C, respectively.

Temperature-dependent halogen⋯halogen synthon crossover in coordination compounds

The crossover between type I and type II Br⋯Br synthons on the formation of coordination compounds has been investigated for the first time.

Effect of anion on Ag(i)meso-helical chains formed with 4,4′-dipyridyl ketone: solventversusanion bridging and anion effects on the strength of ligand binding

Related coordination polymers with varying Ag : L ratios produced a series (1 : 1) that was not sensitive to anion and another (1 : 2) that displayed sensitivity to the anion showing a transition from 1D chains to 2D nets.

4,4'-Imino-dipyridinium bis-(hydrogen phthalate)

In the title salt, C(10)H(11)N(3) (2+)·2C(8)H(5)O(4) (-), doubly protonated 4,4'-dipyridylamine (dpa) cations participate in N-H⋯O hydrogen bonding with two hydrogen phthalate anions to form a neutral unit. Both anions contain an intramolecular O-H⋯O hydrogen bond. In the crystal structure, these units form two-dimensional layers through π-π stacking inter-actions with a centroid-to-centroid distance of 3.763 (3) Å. In turn, these layers aggregate in three dimensions by additional N-H⋯O hydrogen bonding. The assignment to the noncentrosymmetric space group P1 is corroborated by chemically unreasonable aromatic ring bond distances and poor K scale factor distributions for a disordered model in the centrosymmetric P space group.

Poly[[tetra-aqua-(μ(6)-2,2'-diiodo-biphenyl-4,4',5,5'-tetra-carboxyl-ato)dizinc(II)] dihydrate]

In the title compound, {[Zn(2)(C(16)H(4)I(2)O(8))(H(2)O)(4)]·2H(2)O}(n), two crystallographically independent Zn(II) atoms are each located on a twofold rotation axis. Both Zn(II) atoms are in distorted octa-hedral coordination geometries: one is coordinated by six O atoms from four carboxyl-ate groups, while the other is coordinated by two carboxyl-ate groups and four water mol-ecules. The tetra-carboxyl-ate ligand mol-ecules connect the Zn(II) atoms, completing a three-dimensional metal-organic framework. O-H⋯O hydrogen bonds link the metal-organic framework with the uncoord-inated water mol-ecules.