Co(II) coordination polymers exhibiting reversible structural transformation and color change: A comparative analysis with Ni(II) analogue

Polyhedron ◽  
2018 ◽  
Vol 152 ◽  
pp. 225-232 ◽  
Author(s):  
Kedar Bahadur Thapa ◽  
Ming-Hao Wu ◽  
Xiang-Kai Yang ◽  
Tsun-Ren Chen ◽  
Jhy-Der Chen
Keyword(s):  
Comparative Analysis ◽  
Structural Transformation ◽  
Coordination Polymers ◽  
Color Change ◽  
Reversible Structural Transformation

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.

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...

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.

Agrarian receipts as a tool for the structural transformation of financial and credit relations in the agrarian business of the region

2019 ◽  
pp. 40-53
Author(s):  
Yuliia Nehoda
Keyword(s):  
Comparative Analysis ◽  
Retrospective Analysis ◽  
Structural Transformation ◽  
Pilot Project ◽  
Bank Lending ◽  
Economic Benefits ◽  
Advantages And Disadvantages ◽  
New Instrument ◽  
Agricultural Business ◽  
Business Entities

The subject of the research – is a set of organizational-economic relations arising in the process of structural transformation of financial and credit relations in the agricultural business. The purpose of the article is a retrospective analysis of structural transformations of financial and credit relations in the agricultural business, evaluation of the effectiveness and feasibility of the introduction of agricultural receipts as a new instrument of lending to the agricultural business of the regions. Methodology of work – system-structural and comparative analyzes (to determine the effectiveness of the crediting mechanism according to the agricultural receipts of the farmers of the region); monographic (when studying the problems of the functioning of the mechanism of lending to agrarians by agrarian receipts) economic analysis (when carrying out a comparative analysis of the mechanism of classical bank lending to the agrarian business and the mechanism of lending to agrarians according to agrarian receipts); modeling and forecasting (when determining ways to overcome the existing deficiencies in the mechanism of lending to agrarian business entities of the region according to agrarian receipts). The results of the work – a retrospective analysis of the structural transformation of financial and credit relations in the agricultural business was carried out. The mechanism of crediting agrarians according to agrarian receipts and the scale of its distribution in the agrarian business of the region are considered. A comparative analysis of the mechanism of classical bank lending to the agrarian business and the mechanism of lending to agrarians according to agrarian receipts was carried out. In the framework of the pilot project “Agrarian receipts in Ukraine” of the international financial corporation (IFC) in partnership with the Swiss Confederation in Ukraine, the example of the Poltava region defined the effectiveness of the crediting mechanism according to the agrarian receipts of the agrarians of the region. The advantages and disadvantages of the mechanism of crediting the subjects of the agrarian business on agrarian receipts are noted. The ways to overcome the existing shortcomings of the mechanism of crediting the subjects of the agrarian business of the region according to agricultural receipts are determined. Conclusions – according to the results of the conducted research, the effectiveness of the mechanism of lending to the agricultural business of the regions according to agricultural receipts was proved, its advantages and disadvantages were noted, and attention was also focused. Proposed in Art. 7 of Law No. 5479-VI clearly delineate cases and restrictions on the debtor’s reimbursement of expenses incurred by the lender with the acquisition of the right to grow and harvest the pledged crop of agricultural products, which will ensure the principle of equality of parties on economic benefits and distribution of credit risks according to agricultural receipts.

Humidity-Induced Structural Transformation in Pseudopolymorph Coordination Polymers

2021 ◽  
Author(s):  
Behrouz Notash ◽  
Mona Farhadi Rodbari ◽  
Gianpiero Gallo ◽  
Robert Dinnebier
Keyword(s):  
Structural Transformation ◽  
Coordination Polymers
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