论文部分内容阅读
In this work,we report a new two-dimensional Sr(II) coordination polymer,namely,[Sr(L)(phen)(H_2O)](1),based on 3,5-dinitro-salicylic acid(H_2L) and 1,10-phenanthroline(phen).It crystallizes in monoclinic,space group P2_1/c with a = 15.479(3),b = 9.4020(19),c = 13.884(3) A,β= 103.76(3)°,V= 1962.5(7) A3,Z = 4,C_(19)H_(12)SrN_4O_8,M_r = 511.95,D_c = 1.733 g/cm~3,F(000) =1024,μ(MoKα) = 2.805 mm~(-1),R = 0.0411 and wR = 0.1069.In 1,each L anion bridges three Sr(Ⅱ)atoms by using carboxylate and hydroxyl groups,yielding a two-dimensional layer structure.The phen ligands are alternately attached to both sides of the layer.The n-n stacking between L and phen in the same layer and hydrogen-bonding interactions between water molecule and carboxylate oxygen atom play an important role in stabilizing the layer structure of 1.The solid state luminescent property of 1 was also studied at room temperature.
In this work, we report a new two-dimensional Sr (II) coordination polymer, namely, [Sr (L) (phen) (H 2 O)] (1), based on 3,5-dinitro-salicylic acid 1,10-phenanthroline (phen). It crystallizes in monoclinic space group P2_1 / c with a = 15.479 (3), b = 9.4020 (19), c = 13.884 (3) A, V = 1962.5 (7) A3, Z = 4, C_ (19) H_ (12) SrN_4O_8, M_r = 511.95, D_c = 1.733 g / cm_3, F (000) = 1024, μ (MoKα) = 2.805 mm ~ (-1), R = 0.0411 and wR = 0.1069.In 1, each L anion bridges three Sr (II) atoms by using carboxylate and hydroxyl groups, yielding a two-dimensional layer structure. The phen ligands are alternately attached to both sides of the layer. nn stacking between L and phen in the same layer and hydrogen-bonding interactions between water molecule and carboxylate oxygen atom play an important role in stabilizing the layer structure of 1. The solid state luminescent property of 1 was also studied at room temperature.