Photochemical and Magnetic Properties of Seven New Metal–Organic Frameworks Constructed by Flexible Tetrapyridines and V-Shaped Polycarboxylate Acids
作者:Jin-Song Hu、Xin-Hua Huang、Cheng-Ling Pan、Lei Zhang
DOI:10.1021/acs.cgd.5b00067
日期:2015.5.6
Seven two- or three-dimensional (2D or 3D) coordination polymers have been synthesized by tetrakis(4-pyridyloxymethylene)methane (TPOM) with V-shaped 4,4′-oxybis(benzoicacid) (H2oba), 4,4′-sulfonyldibenzoic acid (H2sdb), 4,4′-(hexafluoroisopropylidene)bis(benzoic acid) (H2hfipbb), 4,4′-dicarboxydiphenylamine (H2ddpa), and 4,4′-dicarboxy-ethyl diphenylamine (H2dedpa) in the presence of nitrates of transition metal in H2O/DMF systems, namely, [Co2(TPOM)(oba)2(H2O)2]·(H2O)8}n (1), [Cd2(TPOM)(oba)2(H2O)2]·(H2O)4(DMF)1.5}n (2), [Ni2(TPOM)(oba)2(H2O)2]·(H2O)5}n (3), [Co2(TPOM)(hfipbb)2]·(H2O)3}n (4), [Cd2(TPOM)(dedpa)2]·(H2O)4(DMF)2}n (5), [Co2(TPOM)(sdb)2]·(H2O)3}n (6), [Co2(TPOM)(ddpa)2]}n (7). Complexes 1–3 have similar structures, possessing 3D self-penetrated frameworks. Complex 4 is also a self-penetrated 3D framework containing meso-helix [Co(hfipbb)]n chains. Complex 5 reveals a 2-fold interlocked 2D → 2D network. For complex 6, only three pyridyl groups coordinated to Co(II) ions in one TPOM ligand, while for complex 7, only two pyridyl groups coordinated to Co(II) ions in one TPOM ligand. In addition, magnetic, fluorescence, and UV–vis properties of these complexes have been studied.
通过四(4-吡啶氧基甲烷)甲烷(TPOM)与V型的4,4'-氧双(苯甲酸)(H2oba)、4,4'-磺酰基二苯甲酸(H2sdb)、4,4'-(六氟异丙烯基)双(苯甲酸)(H2hfipbb)、4,4'-二羧基二苯胺(H2ddpa)和4,4'-二羧基乙基二苯胺(H2dedpa)在水/二甲基甲酰胺(DMF)体系中与过渡金属硝酸盐的存在下,合成了七种二维或三维(2D或3D)配位聚合物,即[Co2(TPOM)(oba)2](H2O)2·(H2O)8}n(1),[Cd2(TPOM)(oba)2](H2O)2·(H2O)4(DMF)1.5}n(2),[Ni2(TPOM)(oba)2](H2O)2·(H2O)5}n(3),[Co2(TPOM)(hfipbb)2]·(H2O)3}n(4),[Cd2(TPOM)(dedpa)2]·(H2O)4(DMF)2}n(5),[Co2(TPOM)(sdb)2]·(H2O)3}n(6),[Co2(TPOM)(ddpa)2]}n(7)。复合物1-3具有相似的结构,拥有三维自穿透框架。复合物4也是一个自穿透的三维框架,包含有序螺旋[Co(hfipbb)]n链。复合物5呈现出双重交锁的二维 → 二维网络。对于复合物6,仅有三个吡啶基团与一个TPOM配体中的Co(II)离子配位,而对于复合物7,仅有两个吡啶基团与一个TPOM配体中的Co(II)离子配位。此外,还研究了这些复合物的磁性、荧光和紫外-可见光性质。