Synthesis, crystal structures, and luminescent properties of two series' of new lanthanide (III) amino-carboxylate-phosphonates.
Synthesis, crystal structures, and luminescent properties of two series' of new lanthanide (III) amino-carboxylate-phosphonates.
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DOI：
10.1021/ic901621x
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发表时间：
2010-02
影响因子：
4.6
通讯作者：
Tianhua Zhou;Fei-Yan Yi;Pei‐Xin Li;J. Mao
中科院分区：
文献类型：
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作者：
Tianhua Zhou;Fei-Yan Yi;Pei‐Xin Li;J. Mao
通过镧系氯化物与4-HOOC-C（6）H（4）-CH（2）NHCH（2）PO（3）H（2）（H（3）L）在不同配体/金属（L/M）比下的水热反应，合成了9个新的具有两种三维网状结构的镧系羧酸-膦酸配合物LnCl（HL）（H（2）O）（2）（Ln = Sm，1; Eu，2; Gd，3; Tb，4; Dy，5; Er，6）和[Ln（2）（HL）（H（2）L）（L）（H（2）O）（2）]·4H（2）O（Ln = Nd，7; Sm，8; Eu，9）。化合物1-6是同构的，并且特征在于3D网络，其中LnO（7）Cl多面体通过将CPO（3）四面体桥接成平行于bc平面的2D无机层而互连。这些层通过羧酸酯-膦酸酯配体的有机基团经由羧酸酯基团的配位进一步交联成柱撑层状结构。化合物7-9也是同构的，并且特征在于由1D镧系元素（III）膦酸盐无机板构成的3D开放骨架，其进一步通过羧酸盐-膦酸盐配体的有机基团经由羧酸盐基团的配位桥接，形成沿着b轴的大的1D隧道，其被晶格水分子填充。发光测量表明化合物2、4和5分别在红光、绿色和黄光区显示出强的发射带。还研究了2、3、5和7的磁性。
Hydrothermal reactions of lanthanide(III) chlorides with 4-HOOC-C(6)H(4)-CH(2)NHCH(2)PO(3)H(2) (H(3)L) at different ligand-to-metal (L/M) ratios afforded nine new lanthanide(III) carboxylate-phosphonates with two types of 3D network structures, namely, LnCl(HL)(H(2)O)(2) (Ln = Sm, 1; Eu, 2; Gd, 3; Tb, 4; Dy, 5; Er, 6) and [Ln(2)(HL)(H(2)L)(L)(H(2)O)(2)].4H(2)O (Ln = Nd, 7; Sm, 8; Eu, 9). Compounds 1-6 are isostructural and feature a 3D network in which the LnO(7)Cl polyhedra are interconnected by bridging CPO(3) tetrahedra into 2D inorganic layers parallel to the bc plane. These layers are further cross-linked by organic groups of the carboxylate-phosphonate ligands via the coordination of the carboxylate groups into a pillared-layered architecture. Compounds 7-9 are also isostructural and feature a 3D open-framework composed of 1D lanthanide(III) phosphonate inorganic slabs which are further bridged by organic groups of the carboxylate-phosphonate liagnds via the coordination of the carboxylate groups, forming large 1D tunnels along the b-axis which are filled by lattice water molecules. Luminescent measurements indicate that compounds 2, 4, and 5 show strong emission bands in red, green, and yellow light region, respectively. Magnetic properties of 2, 3, 5, and 7 have also been studied.