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Three novel Co(ii)/Ni(ii)-based coordination polymers as efficient heterogeneous catalysts for dye degradation†
CrystEngComm ( IF 2.6 ) Pub Date : 2018-06-20 00:00:00 , DOI: 10.1039/c8ce00860d Ling Qin 1, 2, 3, 4, 5 , Qing Hu 1, 2, 3, 4 , Yang Wu 1, 2, 3, 4 , Jia-Le Cai 1, 2, 3, 4 , Yun-Yun Li 1, 2, 3, 4
CrystEngComm ( IF 2.6 ) Pub Date : 2018-06-20 00:00:00 , DOI: 10.1039/c8ce00860d Ling Qin 1, 2, 3, 4, 5 , Qing Hu 1, 2, 3, 4 , Yang Wu 1, 2, 3, 4 , Jia-Le Cai 1, 2, 3, 4 , Yun-Yun Li 1, 2, 3, 4
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Three novel networks, namely, {[Co(HL)2]}n (1), {[Co(L)(H2O)]·[Co3/2(L)(OH-Hbdc)(H2O)2]·H2O}n (2), and [Ni(L)(H2O)5]·DMF·4H2O (3), where H2L = 4′-pyridin-4-yl-biphenyl-3,5-dicarboxylic acid and OH-H2bdc = 5-hydroxyisophthalic acid, have been hydrothermally synthesized and characterized. Compound 1 is a two-dimensional (2D) layered structure of Co2+ ions coordinated with incompletely deprotonated HL− ligands. Compound 2 is a crystal in the triclinic space group P![[1 with combining macron]](https://www.rsc.org/images/entities/char_0031_0304.gif)
and shows a very rare 2D + 2D heterogeneous framework built from 3-connected {63} hcb layers and 4-connected {44·62} sql layers. Compound 3 is a 0-D molecular complex crystallized in the chiral space group P212121, which suggests that symmetry breaking can be driven by the solvent-assisted homochiral helix without any chiral building blocks. In addition, their heterogeneous catalytic oxidation activities toward methyl orange (MO), methyl blue (MB), neutral red (NR), methylene blue (MEB), and safranine T (ST) and the mechanisms in the presence of H2O2 have been investigated in detail in aqueous solutions. The results show that the photocatalytic efficiency of NR is the highest for compounds 1–3.
中文翻译：
三种新型的基于Co（ii）/ Ni（ii）的配位聚合物作为染料降解的高效多相催化剂†
{[Co（HL）2 ]} n（1），{[Co（L）（H 2 O）]·[Co 3/2（L）（OH-Hbdc）（H 2 O） ）2 ]·H 2 O} n（2）和[Ni（L）（H 2 O）5 ]·DMF·4H 2 O（3），其中H 2 L = 4'-吡啶-4-基-水热合成并表征了联苯-3,5-二羧酸和OH-H 2 bdc = 5-羟基间苯二甲酸。化合物1是Co 2+的二维（2D）分层结构离子协调与不完全去质子HL -配体。化合物2是三斜晶空间群P中的晶体，并且显示出非常罕见的2D + 2D异质骨架，该骨架由3个连接的{6 3 } hcb层和4个连接的{4 4 ·6 2 } sql层构建。化合物3是在手性空间群P 2 1 2 1 2 1中结晶的0-D分子络合物，这表明对称性破坏可以由没有任何手性结构单元的溶剂辅助同手性螺旋驱动。此外，它们在甲基橙（MO），甲基蓝（MB），中性红（NR），亚甲基蓝（MEB）和番红T（ST）上的非均相催化氧化活性以及在H 2 O 2存在下的机理已经在水溶液中进行了详细研究。结果表明，对于化合物1-3，NR的光催化效率最高。
更新日期：2018-06-20
and shows a very rare 2D + 2D heterogeneous framework built from 3-connected {63} hcb layers and 4-connected {44·62} sql layers. Compound 3 is a 0-D molecular complex crystallized in the chiral space group P212121, which suggests that symmetry breaking can be driven by the solvent-assisted homochiral helix without any chiral building blocks. In addition, their heterogeneous catalytic oxidation activities toward methyl orange (MO), methyl blue (MB), neutral red (NR), methylene blue (MEB), and safranine T (ST) and the mechanisms in the presence of H2O2 have been investigated in detail in aqueous solutions. The results show that the photocatalytic efficiency of NR is the highest for compounds 1–3.
中文翻译：
三种新型的基于Co（ii）/ Ni（ii）的配位聚合物作为染料降解的高效多相催化剂†
{[Co（HL）2 ]} n（1），{[Co（L）（H 2 O）]·[Co 3/2（L）（OH-Hbdc）（H 2 O） ）2 ]·H 2 O} n（2）和[Ni（L）（H 2 O）5 ]·DMF·4H 2 O（3），其中H 2 L = 4'-吡啶-4-基-水热合成并表征了联苯-3,5-二羧酸和OH-H 2 bdc = 5-羟基间苯二甲酸。化合物1是Co 2+的二维（2D）分层结构离子协调与不完全去质子HL -配体。化合物2是三斜晶空间群P中的晶体，
并且显示出非常罕见的2D + 2D异质骨架，该骨架由3个连接的{6 3 } hcb层和4个连接的{4 4 ·6 2 } sql层构建。化合物3是在手性空间群P 2 1 2 1 2 1中结晶的0-D分子络合物，这表明对称性破坏可以由没有任何手性结构单元的溶剂辅助同手性螺旋驱动。此外，它们在甲基橙（MO），甲基蓝（MB），中性红（NR），亚甲基蓝（MEB）和番红T（ST）上的非均相催化氧化活性以及在H 2 O 2存在下的机理已经在水溶液中进行了详细研究。结果表明，对于化合物1-3，NR的光催化效率最高。
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