Three new metal-organic frameworks [Cd(L)(obba)]·H)2O(1),[Co(L)(obba)]·MeCN(2) and [Cd_2(L)_2(ip)_2]·6H_2O·DMF(3)(H_2obba = 4,4?-oxybisbenzoic acid,H2 ip = m-phthalic acid) have been successfully synthesized based on the controllable self-assembly of 9-ethyl-3,6-diimidazolyl-carbazole(L),varied carboxylates and different metal ions under solvothermal conditions,which were characterized by single-crystal X-ray diffraction,elemental analysis,IR spectroscopy and thermogravimetry. Furthermore,luminescence and magnetic susceptibility of compound 2 are also investigated in detail. Single-crystal X-ray diffraction and topology analysis reveal that complexes 1~3 exhibit similar two-dimensional(2D) networks.
Nickel(Ⅱ) complexes Ni(L1)2(1) and Ni(L2)2·CH3CN·H2O(2)(L1Cl = 2-(3-benzyl-2,3-dihydroimidazlo-1-yl)-N-(pyridin-2-yl)acetamide, chloride salt, L2Cl = 2-(3-naphthalene-2-ylmethyl)-2,3-dihydro-imidazlo-1-yl)-N-phenylacetamide, chloride salt) with amide-functionalized imidazolium NHC ligand were synthesized and determined by single-crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic system, space group P21/c with a = 9.2561(19), b = 15.138(3), c = 20.750(4) , β = 90.216(3)°, V = 2907.3(10) 3 and Z = 4. Complex 2 crystallizes in the orthorhombic system, space group Pbca with a = 15.5469(16), b = 15.3521(15), c = 31.177(3) , V = 7441.2(13) 3 and Z = 8. They are stable in the air and formed via intermolecular weak interactions, including C–H···π contacts and C–H···O hydrogen bonds. Complex 1 was applied in Suzuki coupling reaction through the investigation of reaction conditions under the optimal choice conditions: 80 ℃, K3PO4, 3% mol catalysts, 6% mol PPh3 and toluene as solvent system could afford 96% yield in 5 h.
In this study, two new co-crystals based on rigid imidazolium ligand(2,2'-((1,1'-biphenyl)-4,4'-diyl)bis(2H-imidazo[1,5-a]pyridine-4-ium) hexafluorophosphate(L)) and 4,4'-bipyridine(Bpy) and benzene(Ben), formulated as L(Bpy)0.5(co-crystal 1) and L(Ben)(co-crystal 2), were obtained. Crystal data for 1: P1 space group with a = 10.921(4), b = 16.998(6), c = 17.666(6), α = 95.720(7), β = 104.272(7), γ = 93.340(6)°, V = 3150.5(19) 3 and Z = 2; and crystal data for 2: monoclinic C2/m space group with a = 25.90(2), b = 9.631(9), c = 6.371(6), β = 95.26(2)°, V = 1583(2) 3 and Z = 2. Co-crystal 1 was dependent on hydrogen bonds and π...π stacking, while only hydrogen bonds are present in 2. Two new co-crystals were characterized by IR, NMR spectra, thermogravimetric and ultraviolet absorption analyses.
