Eight rare earth metal organic frameworks and coordination polymers from 2-nitroterephthlate: syntheses, structures, solid-state luminescence and an unprecedented topology
作者:Jermaine A. Smith、Marvadeen A. Singh-Wilmot、Korey P. Carter、Christopher L. Cahill、Alan J. Lough、Christopher S. Knee
DOI:10.1039/c6nj00822d
日期:——
Eight novel lanthanide metal organic frameworks (MOFs) and coordination polymers (CPs), La2(NTA)3(OH2)6 (1), [Nd(NTA)(HNTA)(OH2)2]·3H2O (2), [Nd2(NTA)3(OH2)2](H2O)3·2H2O (3), and [Ln2(NTA)3(OH2)2](H2O)2 (Ln = Sm (4), Eu (5), Gd (6), Tb (7), Er (8)), (H2NTA = 2-nitroterephthalic acid), have been synthesized under hydrothermal and slow evaporation conditions. The compounds are characterized by X-ray
八种新型镧系金属有机骨架(MOF)和配位聚合物(CP),La 2(NTA)3(OH 2)6(1),[Nd(NTA)(HNTA)(OH 2)2 ]·3H 2 O(2),[Nd 2(NTA)3(OH 2)2 ](H 2 O)3 ·2H 2 O(3)和[Ln 2(NTA)3(OH 2)2 ](H 2 O)2(Ln = Sm(4),Eu(5),Gd(6),Tb(7),Er(8))(H 2 NTA = 2-硝基对苯二甲酸),是在水热和慢速蒸发条件下合成的。这些化合物的特征在于X射线晶体学,元素分析,红外光谱和热重分析(TGA)。化合物1-8具有不同的NTA配体配位模式,其中包括首次报道的两种模式。化合物2通过缓慢蒸发而结晶,并具有涉及H键和π–π堆积相互作用的超分子3-D骨架。在化合物1和3-8中,是在水热条件下制备的,非共价相互作用是次要的,而3-D网络是由强共价键构成的。化合物1,3和4-8形成具有3