A New Dinuclear Gadolinium Complex Constructed from p-Phenylenediamine-N,N,N ',N '-tetraacetic Acid and in situ Generated Oxalate

作者：Yu Fang Yong; Hao Zhi Feng; Li Hai Feng; Hu Sheng^*

来源：Chinese Journal of Structural Chemistry, 2012, 31(9): 1315-1321.

• Gd(III) complex
• crystal structure
• p-phenylenediamine-N,N,N',N'-tetraacetic acid
• oxalate

Routine solution reaction of Gd3 and p-phenylenediamine-N,N,N',N'-tetraacetic acid (p-PhDTA) yields a dinuclear complex [Gd-2(ox)(p-PhDTA)(2)(H2O)(10)]center dot 6H(2)O (ox = oxalate), which was characterized by single-crystal X-ray diffraction (MoK alpha radiation, lambda = 0.71073 angstrom), elemental analysis and IR. This complex crystallizes in the monoclinic system, space group P2(1)/n with a = 10.2522(8), b = 10.0053(8), c = 23.8834(18) angstrom, beta = 99.1080(10)degrees, V = 2419.0(3) angstrom(3), Z = 2, M-r = 1367.32, D-c = 1.877 g/cm(3), F(000) = 1368, mu = 2.830 mm(-1), the final R = 0.0337 and wR = 0.0794 for 4747 observed reflections (I > 2 sigma(I)). The exo-tetradentate oxalate ligand, generated in situ from the oxidative coupling of methanol, is incorporated to construct a dinuclear Gd-2(ox)(2) unit decorated with p-PhDTA ligands on the two sides with a monodentate coordination mode. The dinuclear molecules are further connected by the lattice water molecules to form a three-dimensional hydrogen network.

• 出版日期2012
• 单位广东工业大学