The crystal structure of 1,2-bis(1H-benzo[d]imidazol-2-yl)ethane-1,2-diol — N-(2-aminophenyl)-3-(1H-benzo[d]imidazol-2-yl)-2,3-dihydroxypropanamide (1/1), C32H30N8O5

C32H30N8O5, orthorhombic, P212121 (no. 19), a = 9.1258(4) Å, b = 10.6225(5) Å, c = 30.1870(14) Å, V = 2926.3(2) Å3, Z = 4, R gt (F) = 0.0367, wR ref (F 2) = 0.0837, T = 200 K.

The crystal structure of 5-carboxy-2-(hydroxymethyl)-1H-imidazol-3-ium-4-carboxylate, C6H8N2O6

C6H8N2O6, monoclinic, P21/c (no. 14), a = 7.4709(4) Å, b = 14.2051(9) Å, c = 7.3198(4) Å, β $\beta $  = 97.096(4)°, V = 770.86(8) Å3, Z = 4, R gt (F) = 0.0346, wR ref (F 2) = 0.0946, T = 200 K.

Crystal structure of catena-poly[diaqua(μ2-2-(hydroxymethyl)-1H-imidazole-4,5-dicarboxylato)cadmium(II)], C6H8CdN2O7

C6H8CdN2O7, monoclinic, P21/c (no. 14), a = 7.3428(15) Å, b = 11.272(2) Å, c = 12.764(4) Å, β = 118.73(2)°, V = 926.4(4) Å3, Z = 4, R gt(F) = 0.0261, wR ref(F 2) = 0.0609, T = 293(2) K.

Synthesis, Structure and Fluorescence Properties of a Zn(II) Coordination Polymer Based on 2-(Hydroxymethyl)-1H-Imidazole-4,5-Dicarboxylate

The coordination polymer {[Zn3(HhmIDC)2(H2O)2]·2H2]O} n [H4hmIDC = 2-(hydroxymethyl)-1 H-imidazole-4,5-dicarboxylic acid] has been synthesised and structurally characterised. In the polymer, there are two crystallographically distinct Zn(II) ions that adopt different coordination environments. The polymer exhibits good fluorescence properties in the solid state at room temperature and its thermogravimetric properties are also described.

Retracted Article: Insight into the reversible structural crystalline-state transformation from MIL-53(Al) to MIL-68(Al)

The reversible crystalline transformation from MIL-53(Al) into MIL-68(Al) was accomplished.

Crystal structure of diaqua-(2,2′-(butane-1,4-diyl)-bis(5-carboxy-1H-imidazole-4-carboxylato)-κ4 O,O′,N,N′)cadmium(II) monohydrate, C14H18O11N4Cd

C14H18CdN4O11N4, triclinic, P1̅ (no. 2), a = 9.5135(3) Å, b = 9.8632(3) Å, c = 11.1419(4) Å, α = 83.239(1)°, β = 82.000(1)°, γ = 61.461(1)°, V = 907.93(5) Å3, Z = 2, R gt(F) = 0.0288, wR ref(F 2) = 0.0781, T = 293(2) K.

A nonanuclear triangular macrocycle and a linear heptanuclear heterometallic complex based on a 2-substituted imidazole-4,5-dicarboxylate ligand

A Cp*Rh-based nonanuclear triangular macrocycle complex [(Cp*Rh)9L3(NO3)4.5(MeOH)](OTf)4.5 (1), a Cp*Ir-based trinuclear complex [(Cp*Ir)3L(MeCN)4](OTf)3 (2) and a linear heptanuclear heterometallic complex [(Cp*Ir)6ZnL2(MeCN)8(MeOH)2](OTf)8 (3) (Cp* = η(5)-pentamethylcyclopentadienyl) have been synthesized from a 2-(4-(pyridin-4-yl)phenyl)-1H-imidazole-4,5-dicarboxylic acid proligand. These complexes were further characterized by X-ray crystallography, (1)H NMR, DOSY NMR, IR spectroscopy, and elemental analyses.

Five metal–organic frameworks from 3,4-dimethylphenyl substituted imidazole dicarboxylate: syntheses, structures and properties

Five metal–organic frameworks have been hydrothermally synthesized and structurally characterized.

Triaqua[2,2'-(propane-1,3-diyl)bis(5-carboxy-1H-imidazole-4-carboxylato-κ(2)N(3),O(4))]calcium(II) tetrahydrate

In the title compound, [Ca(C(13)H(10)N(4)O(8))(H(2)O)(3)]·4H(2)O, the Ca(II) ion is hepta-coordinated by two N atoms and two O atoms from a tetra-dentate 1,3-bis-(1H-imidazole-4,5-dicarb-oxy-l-ate) propane dianion and three water O atoms, giving a distorted penta-gonal-bipyramidal coordination environment. The Ca-O bond lengths are in the range 2.354 (3)-2.453 (2) Å, while the Ca-N bond lengths are in the range 2.523 (2)-2.548 (2) Å. An intra-molecular O-H⋯O hydrogen bond between the carb-oxy and carboxyl-ate groups stabilizes the mol-ecular configuration. A three-dimensional network of N-H⋯O and O-H⋯O hydrogen bonds help to stabilize the crystal packing.

Aqua-[2,2'-(propane-1,3-di-yl)bis-(5-car-boxy-1H-imidazole-4-carboxyl-ato)-κ(4)N(3),O(4):N(3'),O(4')](pyridine-κN)cobalt(II)-4,4'-bipyridine (1/1)

In the title compound, [Co(C₁₃H₁₀N₄O₈)(C₅H₅N)(H₂O)]·C₁₀H₈N₂, the asymmetric unit comprises half a Co^II complex located on a mirror plane and half a cocrystallized mol­ecule of 4,4′-bipyridine located on an inversion center. The Co^II ion is six coordinate, with distorted octa­hedral geometry, ligated by two N atoms and two O atoms from a 2,2′-(propane-1,3-di­yl)bis­(5-carboxy-1H-imidazole-4-carboxyl­ate) dianion, one N atom from a pyridine mol­ecule and one coordinating water mol­ecule. The Co—O bond lengths range from 2.076 (2) to 2.1441 (15) Å, while the Co—N bond lengths are 2.138 (3) and 2.1515 (17) Å. A two-dimensional network of N—H⋯O and O—H⋯N hydrogen bonds stabilizes the crystal packing. There are π–π inter­actions between the bipyridine and imidazole rings [centroid–centroid distance = 3.7694 (4) Å]. The propane-1,3-diyl group is disordered over two conformations, with refined occupancies of 0.755 (8) and 0.245 (8).