Syntheses, structures, and magnetic properties of two unique Cu(ii)-based coordination polymers involving a crystal-to-crystal structural transformation from a 1D chain to a 3D network

2017 ◽  
Vol 46 (48) ◽  
pp. 17025-17031 ◽  
Author(s):  
Xu-Feng Yang ◽  
Min Liu ◽  
Hai-Bin Zhu ◽  
Cheng Hang ◽  
Yue Zhao
Keyword(s):  
Magnetic Properties ◽  
Structural Transformation ◽  
Coordination Polymers ◽  
Network Structure ◽  
Chain Structure ◽  
3D Network ◽  
1D Chain ◽  
Crystal Structural

Promoted by the DMF solvent, the 1D chain structure of 1 can be irreversibly transformed into the 3D sod network structure of 2 in a crystal-to-crystal fashion, which is accompanied by a drastic magnetic change.

scholarly journals Modification of Structure and Magnetic Properties in Coordination Assemblies Based on [Cu(cyclam)]2+ and [W(CN)8]3−

Crystals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 45 ◽  
Author(s):  
Aleksandra Pacanowska ◽  
Mateusz Reczyński ◽  
Beata Nowicka
Keyword(s):  
Magnetic Properties ◽  
Coordination Polymer ◽  
Single Crystal ◽  
Structural Transformation ◽  
Water Solution ◽  
Building Blocks ◽  
Alcohol Solution ◽  
Slow Diffusion ◽  
Crystal Structural ◽  
Water Alcohol

The 1D {[CuII(cyclam)]3[WV(CN)8]2.5H2O}n (1·5H2O) (cyclam = 1,4,8,11-tetraazacyclotetradecane) coordination polymer of ladder topology can be obtained in water-alcohol solution from [Cu(cyclam)]2+ and [W(CN)8]3− building blocks. Upon dehydration, 1·5H2O undergoes a single-crystal-to-single-crystal structural transformation to the anhydrous {[CuII(cyclam)]3[WV(CN)8]2}n (1) form, which retains the same topology, but is characterized by shorter Cu-W distances and significantly more bent CN-bridges. The deformation of the coordination skeleton is reflected in magnetic properties: the predominant intra-chain interactions change from ferromagnetic in 1·5H2O to antiferromagnetic in 1. The reaction between the same building blocks in water solution under slow diffusion conditions leads to the formation of a 0D {[CuII(cyclam)(H2O)]2[CuII(cyclam)][WV(CN)8]2}.3H2O pentanuclear assembly (2·3H2O).

A series of divalent metal coordination polymers based on isomeric tetracarboxylic acids: synthesis, structures and magnetic properties

2014 ◽  
Vol 43 (46) ◽  
pp. 17519-17527 ◽  
Author(s):  
Min-Le Han ◽  
Ya-Ping Duan ◽  
Dong-Sheng Li ◽  
Guo-Wang Xu ◽  
Ya-Pan Wu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Hydrogen Bonding ◽  
Coordination Polymers ◽  
Divalent Metal ◽  
Metal Coordination ◽  
3D Network ◽  
Supramolecular Networks ◽  
Metal Coordination Polymers ◽  
1D Chains

A series of M(ii) coordination polymers has been synthesized. 1–3 contain 1D infinite chains, and these 1D chains are further linked by hydrogen bonding to form 3D supramolecular networks. While 4 and 5 show tetra- or penta-nodal 3D network, respectively.

Multidimensional luminescent cobalt(ii)-coordination polymers as sensors with extremely high sensitivity and selectivity for detection of acetylacetone, benzaldehyde and Cr2O72−

CrystEngComm ◽  
2020 ◽  
Vol 22 (15) ◽  
pp. 2656-2666 ◽  
Author(s):  
Ai-Ling Li ◽  
Yun-Hua Qu ◽  
Lianshe Fu ◽  
Chao Han ◽  
Guang-Hua Cui
Keyword(s):  
Coordination Polymers ◽  
High Sensitivity ◽  
Chain Structure ◽  
Luminescent Probes ◽  
1D Chain ◽  
Sensitivity And Selectivity

Three new ternary cobalt(ii) CPs were synthesized. 1 exhibits a 3D pcu framework, 2 possesses a 2D hcb layer and 3 is a 1D chain structure. 1, 2, and 3 can be effective luminescent probes for sensing acetylacetone, benzaldehyde and Cr2O72− ions.

scholarly journals Three cobalt-based coordination polymers with tripodal carboxylate and imidazole-containing ligands: syntheses, structures, properties and DFT studies

RSC Advances ◽  
2019 ◽  
Vol 9 (66) ◽  
pp. 38902-38911 ◽  
Author(s):  
Long Tang ◽  
Huan-Huan Wang ◽  
Yu-Hao Fu ◽  
Yi-Tong Wang ◽  
JiJiang Wang ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Magnetic Behavior ◽  
Fluorescence Properties ◽  
Carboxylate Ligand ◽  
Dft Studies ◽  
3D Network ◽  
1D Chain ◽  
2D To 3D

The tripodal carboxylate ligand can be employed in Co(ii) salt/imidazole-containing ligand systems to generate 1D chain, 2D layer, and 2D to 3D network, and the fluorescence properties of 1–3 and magnetic behavior of 1 and 2 have been investigated.

Solvent-induced single-crystal-to-single-crystal transformation and tunable magnetic properties of 1D azido-Cu(ii) chains with a carboxylate bridge

2019 ◽  
Vol 48 (30) ◽  
pp. 11268-11277 ◽  
Author(s):  
Xiangyu Liu ◽  
Xiufang Ma ◽  
Jinhui Yang ◽  
Shuchang Luo ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
Solvent Effect ◽  
Structural Transformation ◽  
Coordination Polymers ◽  
Crystal Transformation ◽  
Carboxylate Bridge ◽  
Copper Coordination

The solvent effect leads to structural transformation and tunable magnetism of chain-like azido-copper coordination polymers.

Structural diversity and magnetic properties of six cobalt coordination polymers based on 2,2′-phosphinico-dibenzoate ligand

2016 ◽  
Vol 45 (48) ◽  
pp. 19500-19510 ◽  
Author(s):  
Zhao-Xi Wang ◽  
Lin-Fei Wu ◽  
Xuan Zhang ◽  
Feifei Xing ◽  
Ming-Xing Li
Keyword(s):  
Magnetic Properties ◽  
Spin Glass ◽  
Coordination Polymers ◽  
Magnetic Behavior ◽  
Structural Diversity ◽  
Antiferromagnetic Interaction ◽  
Spin Canting ◽  
1D Chain ◽  
Cobalt Coordination

Six novel cobalt–carboxylate–phosphinate coordination polymers exhibit 1D chain, 2D networks and 3D frameworks. With difference on their structures, the compounds show remarkable magnetic behavior diversity containing spin canting, spin glass, and antiferromagnetic interaction.

scholarly journals Effect of Charge on the Structures of Zn(II) Coordination Polymers with Triazole-carboxylate Ligands: Syntheses, Structures, and Luminescent Properties

Crystals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 312 ◽  
Author(s):  
Shaobin Miao ◽  
Xiaojuan Sun ◽  
Kexin Wang ◽  
Chunying Xu ◽  
Zhaohao Li ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Positive Charge ◽  
Luminescent Properties ◽  
Chain Structure ◽  
Double Layers ◽  
Carboxylate Ligands ◽  
Benzenedicarboxylic Acid ◽  
1D Chain ◽  
3D Framework ◽  
State Luminescence

Three new Zn(II) coordination polymers, {[Zn(L1)2(H2O)2]·4H2O}n (1), {[Zn(L2)(H2O)2]·0.5H2O}n (2), and {[Zn1.5(L1)(o-bdc)(H2O)]·0.5H2O}n (3) (HL1 = 3,5-di(1,2,4-triazol-1-yl)benzoic acid, H2L2 = 5-(triazol-1-yl)isophthalic acid, o-H2bdc = 1,2-benzenedicarboxylic acid), were successfully synthesized and characterized. Compound 1 exhibits 1D chain structure containing [Zn(L1)2] unit. Compound 2 shows a 2D plane with the ratio of Zn:L2 was 1:1 since L2 can match the positive charge of Zn(II). When L1 and o-bdc2– were presented together, Zn(II) centers are linked by L1 to form 2D double layers, then o-bdc2– further connected the adjacent layers to generate final 3D framework of 3. The ligand charges may play key roles in tuning the frameworks of compounds 1–3. The solid state luminescence of compounds 1–3 and all ligands have been investigated here.

scholarly journals Hydrogen-Bonding Assembly of Coordination Polymers Showing Reversible Dynamic Solid-State Structural Transformations

Inorganics ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 115
Author(s):  
Hitoshi Kumagai ◽  
Sadahiro Yagishita ◽  
Ken Kanazashi ◽  
Mariko Ishii ◽  
Shinya Hayami ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Structural Transformation ◽  
Coordination Polymers ◽  
Chain Structure ◽  
Structural Transformations ◽  
The Other ◽  
Ambient Conditions ◽  
Thermally Induced ◽  
Dehydration Processes

We herein report the synthesis, single-crystal structures of coordination polymers, and structural transformations of complexes employing 1,4,5,6-tetrahydro-5,6-dioxo-2,3-pyrazinedicarbonitrile (tdpd2−) and pyrazine (pyz) as bridging ligands. {[M(H2O)4(pyz)][M(tdpd)2(pyz)]·6(H2O)}n, [1·10H2O and 2·10H2O where M = Co (1) and Zn (2)], consists of two types of crystallographically independent one-dimensional (1D) structures packed together. One motif, [M(tdpd)2(pyz)]2− (A), is an anionic infinite pyz bridged 1D array with chelating tdpd2− ligands, and the other motif is a cationic chain, [M(H2O)4(pyz)]2+ (B), which is decorated with four terminal water molecules. The 1D arrays (A) and (B) are arranged in parallel by multi-point hydrogen-bonding interactions in an alternate (A)(B)(A)(B) sequence extending along the c-axis. Both compounds exhibit structural transformations driven by thermal dehydration processes around 350 K to give partially dehydrated forms, 1·2H2O and 2·2H2O. The structural determination of the partially dehydrated form, 2·2H2O, reveals a solid-state structural transformation from a 1D chain structure to a two-dimensional (2D) coordination sheet structure, [Zn2(tdpd)2(H2O)2(pyz)]n (2·2H2O). Further heating to 500 K yields the anhydrous form 2. While the virgin samples of 1·10H2O and 2·10H2O crystallize in different crystal systems, powder X-ray diffraction (PXRD) measurements of the dehydrated forms, 1·2H2O and 2·2H2O, are indicative of the same structure. The structural transformation is irreversible for 1·10H2O at ambient conditions. On the other hand, compound 2·10H2O shows a reversible structural change. The solid-state structural transformation for 1·10H2O was also confirmed by monitoring in-situ magnetic susceptibility, which is consistent with other thermally-induced measurements.

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