A set of Ag-based metal coordination polymers with sulfonate group: Syntheses, crystal structures and luminescent behaviors

Tang

2020

Two new d 10 metal-organic frameworks based on a novel semi-rigid aromatic biscarboxylate ligand, namely, [Zn (RGAA)(BPY) 1/2 ] (1) and [Cd 5 (μ 3-OH) 2 (RGAA) 4 ] (2) [H 2 RGAA = 4-(carboxymethyl)-2-ethoxybenzoic acid, BPY = 4,4 0-bipyridine], have been synthesized by the hydrothermal reaction, and characterized by Fourier transform-infrared, elemental analyses, X-ray single-crystal diffraction, powder X-ray diffraction and thermogravimetric analyses. Complex 1 displays a three-dimensional (3D) network with a (2,3,4)connected (6ˆ3.8ˆ2.10) 2 (6ˆ3) 2 (8) topology, while complex 2 exhibits a 3D framework with a (3,10)-connected (3.4.5) 2 (3ˆ4.4ˆ6.5ˆ18.6ˆ14.7ˆ2.8) topology. The luminescent properties of compounds 1 and 2 have been investigated in detail, where the emission maxima are 464 and 349 nm, respectively.

Section: Luminescent Propertiesmentioning

confidence: 99%

Two d¹⁰ metal–organic frameworks based on a novel semi‐rigid aromatic biscarboxylate ligand: Syntheses, structures and luminescent properties

Tang

2020

“…As an emerging class of inorganic-organic hybrid materials, metal coordination complexes (MCCs) have gained growing attention owing to their potential applications, including catalysis, sensing, [26][27][28] magnetism, [29][30][31][32][33][34][35][36] optics, [37][38][39][40][41][42][43][44][45][46][47][48] as well as gas storage and separation. [49][50][51][52][53][54][55][56][57][58][59][60][61][62][63] The unique combinations of organic/inorganic building blocks make these materials generate diverse functions.…”

Section: Introductionmentioning

confidence: 99%

A Set of phenyl sulfonate metal coordination complexes triggered Biginelli reaction for the high efficient synthesis of 3,4‐dihydropyrimidin‐2(1H)‐ones under solvent‐free conditions

Tang

2020

Three new metal coordination complexes, namely, [Co (DPE)(H2O)4](DPE)(BS)2 (1), [Co (DPE)2(H2O)4](ABS)2 (2), [Co (DPE)(H2O)4](MBS)2(CH3OH)2 (3) [DPE = (E)‐1,2‐di (pyridin‐4‐yl) ethene, BS = phenyl sulfonic acid, ABS = p‐aminobenzene sulfonic acid, MBS = p‐methylbenzene sulfonic acid] were obtained under hydrothermal conditions. Complexes 1‐3 were structurally characterized by X‐ray single‐crystal diffraction, powder X‐ray diffraction and IR. Complexes 1 and 3 exhibit a one‐dimensional chain structure, and complex 2 does a zero‐dimensional one. These three complexes further generate a three‐dimensional supramolecular architecture via strong hydrogen bonding interactions and packing interactions. These three metal coordination complexes show high catalytic performance for green synthesis of a variety of 3,4‐dihydropyrimidin‐2(1H)‐ones through the Biginelli reactions, which show several advantages such as excellent yields, short reaction times, eco‐friendly synthesis conditions, and simple isolated workup procedure. Interestingly, the order of catalytic activities for these catalysts is the following: 3>1>2, which can be ascribed to the acidities and hydrophobic interactions of phenyl sulfonate groups.

“…In comparison with the widely reported carboxylate, sulfonate group has three O‐donors which can not only participate in coordinating the metal cation, but also act as the hydrogen bonding acceptor to enrich the structure type of MOCPs. However, to the best of our knowledge, only few reports of Zn (II)‐based MOCPs involving arenesulfonate/L1 and several other mixed pyridyl ligands/sulfonate MOCPs have been reported . Thus, in order to explore the coordination modes of L1/L2 ligands and enrich the content of coordination chemistry, it is necessary to systematic investigate the MOCPs constructing from arenesulfonate and L1/L2 ligands.…”

Section: Introductionmentioning

confidence: 99%

Structural variation from linear, layer to 3D framework: Syntheses, structures and luminescence

Guo

Zhu

Meng

et al. 2019

Self‐assembly of Zn (II) or Cd (II) nitrates, flexible bis (pyridyl)‐diamine, as well as arenesulfonic acids, leads to the formation of ten coordination polymers, namely, [Zn(L1)(H2O)3]·2(p‐TS)·2H2O (1), [Zn(L1)(H2O)2]·2(p‐TS)·2H2O (2), [Zn(L1)2(p‐TS)2] (3), [Zn(H2L1)(H2O)4]·2(1,5‐NDS)·2H2O (4), [Zn(H2L2)(H2O)4]·2(1,5‐NDS)·4MeOH (5), [Cd(L1)(p‐TS)(NO3)]·H2O (6), [Cd(L1)(1,5 ‐NDS)0.5(H2O)]·0.5(1,5‐NDS)·H2O (7), [Cd(L2)(H2O)2]·(p‐TS)·(NO3)·3H2O (8), [Cd(L2)(1,5‐NDS)] (9) and [Cd(L2)(1,5‐NDS)]·MeOH (10) (L1 = N,N′‐bis (pyridin‐4‐ylmethyl) ethane‐1,2‐diamine, L2 = N,N′‐bis (pyridin‐3‐ylmethy l)ethane‐1,2‐diamine, p‐HTS = p‐toluenesulfonic acid, 1,5‐H2NDS = 1,5‐naphthalene disulfonic acid), which have been characterized by elemental analysis, IR, TG, PL, powder and single‐crystal X‐ray diffraction. Complexes 1, 4, 5 and 6 present linear or zigzag chain structures accomplished by the interconnection of adjacent M (II) cations through L1 ligands or protonated H2L12+/H2L22+ cations, while complexes 2, 3 and 8 show similar (4,4) layer motifs constructed from the connection of M (II) cations through L1 and L2. The same coordination modes of L1 and L2 in complexes 7 and 9 join adjacent Cd (II) cations to form double chain structures, which are further connected by bis‐monodentate 1,5‐NDS2− dianions into different (6,3) and (4,4) layer motifs. The L2 molecules in complex 10 join adjacent Cd (II) cations together with 1,5‐NDS2− dianions to form 3D network with hxl topology. Therefore, the diverse coordination modes of the bis (pyridyl) ligand with chelating spacer and the feature of different arenesulfonate anions can effectively influence the architectures of these complexes. Luminescent investigation reveals that the emission maximum of these complexes varies from 374 to 448 nm in the solid state at room temperature, in which complexes 4, 5, 7, 9 and 10 show average luminescence lifetimes from 7.20 to 14.82 ns. Moreover, photocatalytic properties of complexes 7–10 towards Methylene blue under Xe lamp irradiation are also discussed.