Hydrogen Bonding Influenced Coordination Mode of Azide Ligand in Schiff base Copper(II) Complexes: Synthesis, Crystal Structures, and Antibacterial Activity

2019 ◽  
Vol 45 (10) ◽  
pp. 734-740
Author(s):  
D. L. Peng
Keyword(s):  
Antibacterial Activity ◽  
Hydrogen Bonding ◽  
Schiff Base ◽  
Crystal Structures ◽  
Coordination Mode ◽  
Azide Ligand

scholarly journals New Mononuclear Mn(III) Complexes with Hydroxyl-Substituted Hexadentate Schiff Base Ligands

2021 ◽  
Vol 7 (1) ◽  
pp. 12
Author(s):  
Peng-Yu Xu ◽  
Yu-Ting Wang ◽  
Zong-Mei Yu ◽  
Yong-Hua Li ◽  
Shi Wang
Keyword(s):  
Magnetic Properties ◽  
Hydrogen Bonding ◽  
Schiff Base ◽  
Crystal Structures ◽  
Schiff Base Ligand ◽  
High Spin State ◽  
Close Packing ◽  
Schiff Base Complexes ◽  
Schiff Base Ligands ◽  
Hydrogen Bonding Interactions

This paper reports the syntheses, crystal structures and magnetic properties of Mn(III) hexadentate Schiff base complexes [Mn(4-OH-sal-N-1,5,8,12)]NO3(1) and [Mn(4-OH-sal-N-1,5,8,12)]ClO4(2), where (4-OH-sal-N-1,5,8,12)2− (4,4′-((1E,13E)-2,6,9,13-tetraazatetradeca-1,13-diene-1,14-diyl)bis(3-methoxyphenol) is a new hydroxyl-substituted hexadentate Schiff base ligand. The introduction of the (4-OH-sal-N-1,5,8,12)2− ligand induces more hydrogen bonding interactions, in addition to promoting the formation of intermolecular interactions among the cations. However, the close-packing structures of both complexes lead to their stabilization in the high-spin state in the temperature range of 2−300 K.

scholarly journals Synthesis, Characterization, X-Ray Crystal Structures and Antibacterial Activity of Cobalt(III) Complexes Derived from 5-Bromo-2-((2-(phenylamino) ethylimino)methyl)phenol

2021 ◽  
Vol 68 (4) ◽  
pp. 983-989
Author(s):  
Cheng Liu
Keyword(s):  
Antibacterial Activity ◽  
Schiff Base ◽  
Single Crystal ◽  
Crystal Structures ◽  
Amino Nitrogen ◽  
Antibacterial Activities ◽  
Octahedral Coordination ◽  
Schiff Base Ligands ◽  
X Ray ◽  
Mtt Method

Two new and similar cobalt(III) complexes, [CoL2] · NO3 (1) and [CoL2] · Cl (2), where L is 5-bromo-2-((2-(phenylamino) ethylimino)methyl)phenolate, have been synthesized and characterized by IR and UV-Vis spectra. Structures of the complexes were confirmed by single crystal X-ray determination. The Co atoms in the complexes are in octahedral coordination, with the donor atoms come from the two Schiff base ligands, viz. phenolate oxygen, and imino and amino nitrogen. The anions of the cobalt salts crystallized as counteranions in the complexes. The complexes were assayed for antibacterial activities by MTT method.

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