scholarly journals One-Dimensional Mercury Halide Coordination Polymers Based on A Semi-Rigid N-Donor Ligand: Reversible Structural Transformation

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 436 ◽  
Author(s):  
Pradhumna Mahat Chhetri ◽  
Xiang-Kai Yang ◽  
Chih-Tung Yang ◽  
Jhy-Der Chen
Keyword(s):  
Structural Transformation ◽  
Coordination Polymers ◽  
Pyridyl Ring ◽  
Donor Ligand ◽  
One Dimensional ◽  
Ring Rotation ◽  
Mercury Halide ◽  
Ligand Conformation ◽  
Reversible Structural Transformation

Four one-dimensional (1D) mercury(II) halide coordination polymers have been synthesized by using a semi-rigid N-donor ligand, 2,2′-(1,4-phenylene)-bis(N-(pyridin-3-yl)acetamide) (1,4-pbpa). While [Hg(1,4-pbpa)Cl2·CH3OH]n, 1, forms a sinusoidal chain, the complexes [Hg(1,4-pbpa)X2]n (X = Cl, 2; Br, 3; I, 4) are helical. The sinusoidal 1 undergoes reversible structural transformation with helical 2 upon removal and uptake of CH3OH, which was accompanied with the conformation adjustment of the 1,4-pbpa ligand from trans anti-anti to trans syn-anti. Pyridyl ring rotation of the 1,4-pbpa ligand that results in the change of the ligand conformation is proposed for the initiation of the structural transformation.

Mercury halide coordination polymers exhibiting reversible structural transformation

CrystEngComm ◽  
2018 ◽  
Vol 20 (15) ◽  
pp. 2126-2134 ◽  
Author(s):  
Pradhumna Mahat Chhetri ◽  
Xiang-Kai Yang ◽  
Jhy-Der Chen
Keyword(s):  
Structural Transformation ◽  
Coordination Polymers ◽  
Mercury Halide ◽  
Reversible Structural Transformation

The structural transformation in 1D helical and mesohelical Hg(ii) chains which demonstrate elastic stretching during the process is investigated.

Structural diversity and modification in Ni(ii) coordination polymers: a peculiar phenomenon of reversible structural transformation between a 1D ladder and 2D layer

CrystEngComm ◽  
2020 ◽  
Vol 22 (44) ◽  
pp. 7565-7574
Author(s):  
Chia-Jou Chen ◽  
Wei-Te Lee ◽  
Ji-Hong Hu ◽  
Pradhumna Mahat Chhetri ◽  
Jhy-Der Chen
Keyword(s):  
Structural Transformation ◽  
Coordination Polymers ◽  
Structural Diversity ◽  
Reversible Structural Transformation ◽  
Peculiar Phenomenon

The coordination of 5-tert-IPA2− ligands, the relaxation of the interdigitated 2D net and the breaking and connecting of the bis-pyridyl-bis-amide ligand demonstrate the peculiar reversible structural transformation between a 1D ladder and 2D layer.

A new photoluminescent coordination polymer constructed with an N-donor ligand having extended coordination capabilities derived from quinoline and pyridine

2020 ◽  
Vol 76 (5) ◽  
pp. 500-506
Author(s):  
Kamil Twaróg ◽  
Małgorzata Hołyńska ◽  
Andrzej Kochel
Keyword(s):  
Coordination Polymer ◽  
Pyridyl Ring ◽  
Ligand Molecule ◽  
Hydrothermal Conditions ◽  
Absorption Bands ◽  
Donor Ligand ◽  
One Dimensional ◽  
The One ◽  
Chloride Monohydrate ◽  
Carboxylic Acid Ligand

Employment of the organic 2-(pyridin-4-yl)quinoline-4-carboxylic acid ligand with extended coordination capabilities leads to the formation of the one-dimensional copper(II) coordination polymer catena-poly[[diaquacopper(II)]-bis[μ-2-(pyridin-4-yl)quinoline-4-carboxylato]-κ2 N 2:O;κ2 O:N], {[Cu(C15H9N2O2)2(H2O)2]·2H2O} n , under hydrothermal conditions. The ligand, isolated as its hydrochloride salt, namely, 4-(4-carboxyquinolin-2-yl)pyridinium chloride monohydrate, C15H11N2O2 +·Cl−·H2O, reveals a pseudosymmetry element (translation a/2) in its crystal structure. The additional pyridyl N atom, in comparison with the previously reported analogues with an arene ring instead of the pyridyl ring in the present ligand molecule, promotes the formation of a one-dimensional coordination polymer, rather than discrete molecules. This polymer shows photoluminescent properties with bathochromic/hypsochromic shifts of the ligand absorption bands, leading to a single band at 479 nm. The CuII ions are involved in weak antiferromagnetic interactions within dimeric units, as evidenced by SQUID magnetometry.

Cobalt(II) coordination polymers constructed from bis(N-pyrid-3-ylmethyl)adipoamide and polycarboxylic acids: reversible structural transformation upon proton delivery and removal

CrystEngComm ◽  
2021 ◽  
Author(s):  
Ji-Hong Hu ◽  
Yuan-Chin Liu ◽  
Jhy-Der Chen
Keyword(s):  
Structural Transformation ◽  
Coordination Polymers ◽  
Tricarboxylic Acid ◽  
Hydrothermal Reactions ◽  
Polycarboxylic Acids ◽  
Reversible Structural Transformation

Hydrothermal reactions of cobalt(II) salts and bis(N-pyrid-3-ylmethyl)adipoamide (L) with various polycarboxylic acids in water and NaOH solutions afforded {[Co(L)0.5(1,3,5-HBTC)(H2O)]·H2O}n (1,3,5-H3BTC = benzene-1,3,5-tricarboxylic acid), 1, {[Co1.5(L)1.5(1,3,5-BTC)(H2O)4]·4H2O}n, 2, [Co(L)(5-tert-IPA)(H2O)2]n (5-tert-H2IPA = 5-tert-butylbenzene-1,3-dicarboxylic...

One-dimensional chains based on linear tetranuclear copper(i) units: reversible structural transformation and luminescence change

CrystEngComm ◽  
2020 ◽  
Vol 22 (19) ◽  
pp. 3322-3328 ◽  
Author(s):  
Chih-Tung Yang ◽  
Xiang-Kai Yang ◽  
Ji-Hong Hu ◽  
Wei-Te Lee ◽  
Tsun-Ren Chen ◽  
...  
Keyword(s):  
Structural Transformation ◽  
One Dimensional ◽  
Reversible Structural Transformation ◽  
Bromide Complex

Two extended metal chains based on linear tetracopper units are reported, in which the bromide complex undergoes reversible structural transformation and luminescence change.

The effect of solvent on one-dimensional cadmium coordination polymers

2018 ◽  
Vol 42 (18) ◽  
pp. 15014-15021 ◽  
Author(s):  
Behrouz Notash ◽  
Bahareh Rezaei Kheirkhah
Keyword(s):  
Coordination Polymer ◽  
Structural Transformation ◽  
Coordination Polymers ◽  
One Dimensional ◽  
Effect Of Solvent

We transformed one one-dimensional coordination polymer directly to another by carrying out a dissolution–recrystallization structural transformation (DRST).

Coordination Polymers:  Structural Transformation from Two to Three Dimensions through Ligand Conformation Change

2000 ◽  
Vol 39 (9) ◽  
pp. 1990-1993 ◽  
Author(s):  
Zhan Shi ◽  
Lirong Zhang ◽  
Shan Gao ◽  
Guoyu Yang ◽  
Jia Hua ◽  
...  
Keyword(s):  
Structural Transformation ◽  
Coordination Polymers ◽  
Three Dimensions ◽  
Conformation Change ◽  
Ligand Conformation
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