Abstract
The hydrothermal reactions of lanthanide ions, oxalates and benzenedicarboxylate with ratio of 4 : 1 : 8 at 190°C afford the three-dimensional coordination polymer Na2[Nd4(OX)(BDC)6(H2O)6] (OX = oxalate and BDC = 1,3-benzenedicarboxylate dianion). Crystal data: C25H18NaNd2O17 M = 901.86, Triclinic, P 1, a = 10.335(6), b = 11.497(6), c = 12.238(7) Å, α = 93.015(9), β =114.892(8)°, γ = 95.970(10)°, V = 1304.3(12) Å3, Z = 2, F(000) = 870, R 1 = 0.0322, wR 2 = 0.0683. The central oxalate of the unit cell coordinates with four lanthanides to form a four metal cluster [Ln4(OX)]. The luminescence spectrum shows weak photoluminescence in infrared and near-infrared.
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