Construction of a series of 0D, 2D and 3D inorganic–organic hybrid coordination polymers based on octamolybdate and 2-(2-pyridyl)imidazole and its derivative
摘要:
Four octamolybdate-based compounds, that is, Cu-2(II)(L-1)(4)(Mo8O26) (1), Cu-2(II)(HL2)(4)(Mo8O26)(2) (2), [(CuL2)-L-II (H2O)(Mo8O26)(0.5)]center dot 2H(2)O (3) and [(CuL2)-L-II(H2O)(Mo8O26)(0.5)]center dot 2H(2)O (4) (L-1 = 2-(2-pyridyl) imidazole, L-2 = 2-(1-(pyridine-3-ylmethyl)-1H-imidazol-2-yl) pyridine), have been hydrothermally synthesized via changing the reaction conditions and structurally characterized by single-crystal X-ray diffraction. With L-1 ligand, we obtained compound 1, which is a 0D molecule and extends to a 3D supramolecular structure via hydrogen-bonding interactions. By using L-2 instead of L-1 ligand, compound 2 comes into being which is as well a discrete molecule and further extended to a 3D supramolecular structure by hydrogen bonds. Intriguingly, compounds 3 and 4 are supramolecular isomers: the former is a 2D 4-connected network and the latter is a 3D (3,4)-connected framework. The measurements of diffuse reflectance for compounds 1-4 indicate that they are potential wide gap semiconductors. (C) 2009 Elsevier B.V. All rights reserved.
Construction of a series of 0D, 2D and 3D inorganic–organic hybrid coordination polymers based on octamolybdate and 2-(2-pyridyl)imidazole and its derivative
摘要:
Four octamolybdate-based compounds, that is, Cu-2(II)(L-1)(4)(Mo8O26) (1), Cu-2(II)(HL2)(4)(Mo8O26)(2) (2), [(CuL2)-L-II (H2O)(Mo8O26)(0.5)]center dot 2H(2)O (3) and [(CuL2)-L-II(H2O)(Mo8O26)(0.5)]center dot 2H(2)O (4) (L-1 = 2-(2-pyridyl) imidazole, L-2 = 2-(1-(pyridine-3-ylmethyl)-1H-imidazol-2-yl) pyridine), have been hydrothermally synthesized via changing the reaction conditions and structurally characterized by single-crystal X-ray diffraction. With L-1 ligand, we obtained compound 1, which is a 0D molecule and extends to a 3D supramolecular structure via hydrogen-bonding interactions. By using L-2 instead of L-1 ligand, compound 2 comes into being which is as well a discrete molecule and further extended to a 3D supramolecular structure by hydrogen bonds. Intriguingly, compounds 3 and 4 are supramolecular isomers: the former is a 2D 4-connected network and the latter is a 3D (3,4)-connected framework. The measurements of diffuse reflectance for compounds 1-4 indicate that they are potential wide gap semiconductors. (C) 2009 Elsevier B.V. All rights reserved.