Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

2019 ◽  
Vol 33 (5) ◽  
pp. e4889 ◽  
Author(s):  
Sadeek Atia Sadeek ◽  
Sherif Mohamed Abd El‐Hamid ◽  
Amira A. Mohamed ◽  
Wael A. Zordok ◽  
Hassan A. El‐Sayed
Keyword(s):  
Density Functional Theory ◽  
Transition Metals ◽  
Density Functional ◽  
Spectroscopic Characterization ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Functional Theory ◽  
Biological Studies

scholarly journals A Free Aluminylene with Diverse σ-Donating and Doubly σ/π-Accepting Ligand Features for Transition Metals

2021 ◽  
Author(s):  
Xin Zhang ◽  
Liu Leo Liu
Keyword(s):  
Density Functional Theory ◽  
Coordination Chemistry ◽  
Transition Metals ◽  
Electronic Structures ◽  
Ligand Exchange ◽  
Density Functional ◽  
Reduction Reaction ◽  
Functional Theory ◽  
Metal Centers ◽  
Coordination Behavior

We report herein the synthesis, characterization, and coordination chemistry of a free N-aluminylene, namely a carbazolylaluminylene 2b. This species is prepared via a reduction reaction of the corresponding carbazolyl aluminium diiodide. The coordination behavior of 2b towards transition metal centers (W, Cr) is shown to afford a series of novel aluminylene complexes 3-6 with diverse coordination modes. We demonstrate that the Al center in 2b can behave as: 1. a σ-donating and doubly π-accepting ligand; 2. a σ-donating, σ-accepting and π-accepting ligand; and 3. a σ-donating and doubly σ-accepting ligand. Additionally, we show ligand exchange at the aluminylene center providing access to the modulation of electronic properties of transition metals without changing the coordinated atoms. Investigations of 2b with IDippCuCl (IDipp = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) show an unprecedented aluminylene-alumanyl transformation leading to a rare terminal Cu-alumanyl complex 8. The electronic structures of such complexes and the mechanism of the aluminylene-alumanyl transformation are investigated through density functional theory (DFT) calculations.

Are luminescent Ru2+ chelated complexes selective coordinative sensors for the detection of heavy cations ?

2021 ◽  
Author(s):  
Christophe Gourlaouen ◽  
Benjamin Schweitzer ◽  
Chantal Daniel
Keyword(s):  
Density Functional Theory ◽  
Transition Metals ◽  
Density Functional ◽  
Functional Theory ◽  
Group 12

The ability of [Ru(bpy)2(bpym)]2+ (bpy = 2,2’-biprydine; bpym = 2,2’-bipyrimidine) at probing specifically heavy cations has been investigated by means of density functional theory for transition metals, group 12 elements...

Cubic MgH2 stabilized by alloying with transition metals: A density functional theory study

2008 ◽  
Vol 56 (13) ◽  
pp. 2948-2954 ◽  
Author(s):  
B.R. Pauw ◽  
W.P. Kalisvaart ◽  
S.X. Tao ◽  
M.T.M. Koper ◽  
A.P.J. Jansen ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Transition Metals ◽  
Density Functional ◽  
Density Functional Theory Study ◽  
Functional Theory
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