Defining the origins of multiple emission/excitation in rhenium-bisthiazole complexes

Azzarelli, Nicholas; Ponnala, Shashikanth; Dampf, Sara J.; Davis, Margaret P.; Ruggiero, Michael T.; Diaz, Valerie Lopez; Babich, John W.; Coogan, Michael P.; Korter, Timothy M.; Doyle, Robert P.; Zubieta, Jon

doi:10.1016/j.ica.2019.01.028

Cited by 4 publications

(1 citation statement)

References 57 publications

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“…Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License isolated from the fruits and flowers of the Cannon ball tree (Couroupita gueanensis), thereafter its good antioxidant, antibacterial and anticancer properties have also been established (Premanathan et al, 2012;Guo, 2019;Ding et al, 2020). Coogan et al (2009) and Azzarelli et al (2019) have also shown that heavy metals are not just "poisonous", but also possess great biological importance through the synthesis of several novel d 6 transition organometallic based agents, which were also used to target specific biological entities. Therefore, the coordination of Re(I) to isatin Schiff bases is promising with prospective biological activities which could even target biological entities of cancerous cells and could also possess some therapeutic anticancer effects.…”

Section: Introductionmentioning

confidence: 98%

Synthesis, physicochemical and antimicrobial properties of rhenium (I) tricarbonyl complexes of isatin Schiff bases

Ikotun¹,

Owoseni²,

Egharevba³

2021

Afr. J. Biotechnol.

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The Schiff base of isatin and sulphanilamide (L1; C 14 H 11 N 3 O 3 S) was prepared and reacted with Re(CO) 5 X (X = Cl and Br) in toluene to give [Re(C 14 H 10 N 2 O)(CO) 3 X] (X = Cl, 1 and X = Br, 2). The prepared Schiff base of isatin and 4-methoxyaniline (L2; C 15 H 12 N 2 O 2 ) was reacted with Re(CO) 5 X in toluene to give [Re(C 14 H 10 N 2 O)(CO) 3 X], where X = Cl, 3 and X = Br, 4. L2 and Re(CO) 5 Br were refluxed in dry toluene under nitrogen and recrystallized to give [Re(C 15 H 12 N 2 O 2 )(CO) 3 Br]. 1 / 2 C 2 H 5 OH (5). Spectroscopic characterization of compounds was done using FTIR, UV-Visible, NMR and Mass spectra analyses. Magnetic susceptibility measurements and melting points were also determined. Elemental analysis of 5 revealed it was a solvate molecule of 4. The in-vitro antimicrobial activities of compounds were evaluated against Staphylococcus aureus, Bacillus subtilis, Haemolytic Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Klebsiella sp., Aspergillus niger, Trichoderma viride and Penicillium citrinum. Spectroscopic analyses revealed new terminal carbonyl bands formed between 1900 and 2030 cm -1 , as L1 and L2 coordinated through their azomethine nitrogen and keto oxygen donor atoms towards Re(I). Results of the antimicrobial studies revealed immerse improved activities upon coordination against tested microorganisms especially gram-negative bacteria, therefore they are recommended for further studies in cell imaging.

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Section: Introductionmentioning

confidence: 98%

Synthesis, physicochemical and antimicrobial properties of rhenium (I) tricarbonyl complexes of isatin Schiff bases

Ikotun¹,

Owoseni²,

Egharevba³

2021

Afr. J. Biotechnol.

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Theoretical Study of Rhodium‐Catalyzed C−C Activation of Cyclobutanones: Origin of Ligand‐Controlled Product Selectivity

Zhang

2020

ChemCatChem

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Cyclobutanone C−C activation with a Rh(I) catalyst has great potential for the synthesis of fused‐ and bridged‐ring systems. However, this synthetic application is greatly limited because of the direct CO extrusion from cyclobutanone, which leads to formation of cyclopropane as a byproduct. The calculations rationalize the experimental puzzles: why PMe2Ph and XPhos ligands can prevent cyclopropane formation for C2‐ and C3‐substituted cyclobutanone, respectively. More importantly, we enriched ligand computationally to exemplify how to develop new ligands. The small monodentate or bidentate phosphine ligand can favor [4+2] cycloaddition over cyclopropanation in the C2‐substituted cyclobutanone system. For the C3‐substituted cyclobutanone system, [4+2–1] cycloaddition is favored and cyclopropanation can be avoided when the large monodentate phosphine ligand is present. The different ligand requirements for C2‐ and C3‐substituted cyclobutanones are attributed to different mechanisms.

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New fac-[ReI(CO)3(Ltri)]Y complexes of linear N,N′,N′′-tridentate ligands (Ltri) with terminal imidazolyl or pyridyl ring (N and N′′) and central tertiary sulfonamide (N′) N-donors. Effects of size and substituents of the terminal N-donor rings and the rarely found direct sulfonamide N to metal bond

Ranasinghe

Marzilli

Pakhomova

et al. 2022

Inorganica Chimica Acta

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Defining the origins of multiple emission/excitation in rhenium-bisthiazole complexes

Cited by 4 publications

References 57 publications

Synthesis, physicochemical and antimicrobial properties of rhenium (I) tricarbonyl complexes of isatin Schiff bases

Synthesis, physicochemical and antimicrobial properties of rhenium (I) tricarbonyl complexes of isatin Schiff bases

Theoretical Study of Rhodium‐Catalyzed C−C Activation of Cyclobutanones: Origin of Ligand‐Controlled Product Selectivity

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