Syntheses, crystal structures, magnetochemistry and catechol oxidase activity of a tetracopper(ii) compound and a new type of dicopper(ii)-based 1D coordination polymer

2017 ◽  
Vol 41 (11) ◽  
pp. 4689-4701 ◽  
Author(s):  
Leena Mandal ◽  
Shuvankar Mandal ◽  
Sasankasekhar Mohanta
Keyword(s):  
Schiff Base ◽  
Coordination Polymer ◽  
Crystal Structures ◽  
Schiff Base Ligand ◽  
Oxidase Activity ◽  
Catechol Oxidase ◽  
Tetranuclear Cluster ◽  
One Dimensional ◽  
1D Coordination Polymer ◽  
New Type

One phenoxo–hydroxo bridged tetranuclear cluster and one phenoxo-µ1,1-azido-µ1,3-azido bridged one-dimensional coordination polymer of copper(ii) derived from a Schiff base ligand are described.

Manganese(ii) complex of an oxygen–nitrogen donor Schiff base ligand showing efficient catechol oxidase activity: synthesis, spectroscopic and kinetic study

2020 ◽  
Vol 44 (9) ◽  
pp. 3748-3754 ◽  
Author(s):  
Piyali Adak ◽  
Antu Mondal ◽  
Shyamal Kumar Chattopadhyay
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Kinetic Study ◽  
Schiff Base Ligand ◽  
Oxidase Activity ◽  
Catechol Oxidase ◽  
High Catalytic Activity ◽  
Nitrogen Donor ◽  
Aerial Oxidation ◽  
Very High

A Mn(ii) complex containing two tridentate O,N,O-donor semicarbazone ligands shows very high catalytic activity for the aerial oxidation of 3,5DTBCH2 with kcat = 3.10 × 106 h−1, and kcat/KM = 3.25 × 108 h−1 M−1.

scholarly journals Copper(II) 2,2-Bis(Hydroxymethyl)Propionate Coordination Compounds with Hexamethylenetetramine: From Mononuclear Complex to One-Dimensional Coordination Polymer

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3358
Author(s):  
Sadaf Rauf ◽  
Agata Trzesowska-Kruszynska ◽  
Tomasz Sierański ◽  
Marcin Świątkowski
Keyword(s):  
Coordination Polymer ◽  
Coordination Compounds ◽  
Structural Diversity ◽  
Structural Features ◽  
Mononuclear Complex ◽  
Molar Ratio ◽  
One Dimensional ◽  
1D Coordination Polymer ◽  
Copper Coordination ◽  
Stretching Vibrations

Three new copper coordination compounds derived from 2,2-bis(hydroxymethyl)propionic acid (dmpa) and hexamethylenetetramine (hmta) were obtained and their crystal structures were determined. The stoichiometry of the reagents applied in the syntheses reflects the metal to ligand molar ratio in the formed solid products. Due to the multiple coordination modes of the used ligands, wide structural diversity was achieved among synthesized compounds, i.e., mononuclear [Cu(dmp)2(hmta)2(H2O)] (1), dinuclear [Cu2(dmp)4(hmta)2] (2), and 1D coordination polymer [Cu2(dmp)4(hmta)]n (3). Their supramolecular structures are governed by O—H•••O and O—H•••N hydrogen bonds. The compounds were characterized in terms of absorption (UV-Vis and IR) and thermal properties. The relationships between structural features and properties were discussed in detail. Owing to discrepancies in the coordination mode of a dmp ligand, bidentate chelating in 1, and bidentate bridging in 2 and 3, there is a noticeable change in the position of the bands corresponding to the stretching vibrations of the carboxylate group in the IR spectra. The differences in the structures of the compounds are also reflected in the nature and position of the UV-Vis absorption maxima, which are located at lower wavelengths for 1.

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