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首页> 外文期刊>Crystal growth & design >Syntheses, structures, photochemical and magnetic properties of novel divalent Cd/Mn coordination polymers based on a semirigid tripodal carboxylate ligand
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Syntheses, structures, photochemical and magnetic properties of novel divalent Cd/Mn coordination polymers based on a semirigid tripodal carboxylate ligand

机译：基于半刚性三脚架羧酸酯配体的新型二价Cd / Mn配位聚合物的合成，结构，光化学和磁性

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摘要

The reactions of a semirigid tripodal carboxylic ligand, 3,5-bi(4-carboxy-phenoxy)-benzoic acid (H3BCPBA) with Cd(NO _3)_2/Mn(NO_3)_2 afford five novel complexes, {[Cd_3(BCPBA)_2·(DMA)_2· (H_2O)_5]·7H_2O·_2DMA}_n (1), {[Cd_3(BCPBA)_2(L~1)(H_2O) _6]·(L~1)}_n (L~1 = 4-[(E)-4-pyridinylazo]pyridine) (2), {[Cd_3(BCPBA)_2(L ~2)·(H_2O)_3(DMF)_2]·2DMF} _n (L~2 = 1,3-bis(4-pyridyl)propane) (3), {[Mn _3(BCPBA)_2(H_2O)_4]·11H _2O}_n (4), {[Mn_3(BCPBA)_2(DMF) _2(H_2O)_2]·2DMF·9H _2O}_n (5) in the presence or absence of an auxiliary ligand. Compound 1 is a three-dimensional (3D) structure with 3,4-connected net structure. Compound 2 possesses 3D networks with two 3D → 3D interpenetration frameworks. Compound 3 is a 3D sheet structure with a decorated tfz-d topology. Compound 4 is a 3D structure which consists of a two-dimensional (2D) Mn honeycomb net with six infinite Mn rings and BCPBA 3- ligands. Compound 5 is also a 3D structure, while its 2D Mn honeycomb net with eight infinite Mn rings is different from that of compound 4. The photochemical property of 1-3 is performed in the solid state at room temperature. Magnetic susceptibility measurements indicate that compounds 4 and 5 exhibit antiferromagnetic coupling between adjacent Mn(II) ions.
机译：半刚性三脚架羧基配体3,5-二（4-羧基-苯氧基）-苯甲酸（H3BCPBA）与Cd（NO _3）_2 / Mn（NO_3）_2的反应提供了五个新的络合物，{[Cd_3（BCPBA ）_2·（DMA）_2·（H_2O）_5]·7H_2O·_2DMA} _n（1），{[Cd_3（BCPBA）_2（L〜1）（H_2O）_6]·（L〜1）} _ n（L 〜1 = 4-[（E）-4-吡啶基偶氮]吡啶）（2），{[Cd_3（BCPBA）_2（L〜2）·（H_2O）_3（DMF）_2]·2DMF} _n（L〜2 = 1,3-双（4-吡啶基）丙烷）（3），{[Mn _3（BCPBA）_2（H_2O）_4]·11H _2O} _n（4），{[Mn_3（BCPBA）_2（DMF）_2 （H_2O）_2]·2DMF·9H_2O} _n（5）在存在或不存在辅助配体的情况下。化合物1是具有3,4-连接的网状结构的三维（3D）结构。化合物2拥有带有两个3D→3D互穿框架的3D网络。化合物3是具有修饰的tfz-d拓扑的3D图纸结构。化合物4是3D结构，由具有六个无限Mn环和BCPBA 3-配体的二维（2D）Mn蜂窝网组成。化合物5也是3D结构，而其具有八个无限Mn环的2D Mn蜂窝网不同于化合物4。1-3的光化学性质在室温下以固态进行。磁化率测量表明，化合物4和5在相邻的Mn（II）离子之间表现出反铁磁耦合。

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