Ethylene Polymerization Using Site‐Selective Pyridine‐Amide Based Iron Complexes

Mishra, Anurag; Prabhu, P.; Gocher, Chandra; Gupta, Virendrakumar

doi:10.1002/slct.201900254

Cited by 8 publications

(5 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to the carbon ring-fused bis(arylimino)pyridine ligands, symmetrical pyridine-amide based iron complexes 3 and 4 have recently been reported. [42] Complex 3 is thermally stable and moderate active (9.23×10 3 g PE/(mol Fe•h), affording high molecular weight PE compared to classical iron catalysts (Table 1, entry 10). The obtained PE polymers have unimodal molecular weight and narrow distribution PE.…”

Section: Symmetrical Bis(arylimino)pyridine Ligandsmentioning

confidence: 99%

Research Progress of Iron Catalysts with N,N,N‐tridentate Ligands for Ethylene Polymerization

Hu,

Zhao,

Luo

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

Some iron complexes are found to be effective catalysts of ethylene polymerization and have become a research hotspot due to their advantages of high activity, good thermal stability, and mild reaction conditions. Compared with other systems, iron catalysts bearing N,N,N‐tridentate ligand have good comprehensive performance in catalyzing ethylene polymerization. This review article focuses on changes in the framework of bis(imino)pyridyl ligand and the effect of different substituents on the catalytic performance of ethylene polymerization (activity, molecular weight, thermal stability, etc.) since 2019. Despite significant achievements, many opportunities and possibilities are yet to be fully addressed, and a brief outlook on the future of issues should be focused on is provided.

show abstract

Section: Symmetrical Bis(arylimino)pyridine Ligandsmentioning

confidence: 99%

Research Progress of Iron Catalysts with N,N,N‐tridentate Ligands for Ethylene Polymerization

Hu,

Zhao,

Luo

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…The absorption spectroscopy and magnetic moment of metal complexes are listed in Table 3 and Fig. 4 we present the absorbance bands between 32051-37062cm -1 in UV-visible region due to n-π* transition of C=N group and the charge transfer 22,23 .…”

Section: Electronic Spectra and Magnetic Propertiesmentioning

confidence: 99%

املاح الفلزات الانتقالية الأولى للدايازونيوم المشتق من مركب حلقي غير متجانس للنيتروجين تحضيرو تشخيص و الفعالية الحيوية

Mohammed,

Alyass

2024

Baghdad Sci.J

View full text Add to dashboard Cite

Metal complexes chrome(III), manganese(II), iron(III), cobalt(II), nickel(II), cupper(II) and zinc(II) with diazonium of 3-amino-2-chloropyridine of general formula [2-Cl-C5H3N≡N]n[MXm], where n=2 or 3 for divalent and trivalent metal, m= 4 or 6 were synthesized. The complexes have been characterized by flame atomic absorption, (C.H.N), molar conductance, magnetic susceptibility UV-vis spectra, infrared spectra,1H-NMR spectroscopy and thermo gravimetric analysis (TGA and DTA). The measurements showed that the divalent metal ion complexes (M2+) have (1:2) M:L ratio with tetrahedral geometry around metal ions while the trivalent metal ions (M3+) formed (1:3) metal: ligand ratios with octahedral geometry. Furthermore, the complex salts were displayed for antibacterial activity versus two types of bacteria Gram, positive (Staphylococcus aureus) and Gram negative (Klebsiella pneumonia). The complex 2 Mn(II) and 3 Fe(III), exhibited moderate activity against the two tested bacteria, while the complexes 1 Cr(III), 4 Co(II) 6 Cu(II) and 7 Zn(II) showed high activity .The complex 5 Ni(II) displayed moderate and weak against the type one and type two of bacteria respectively.

show abstract

“…The electronic absorption bands for Zn(II) complexes were located at 283 and 282 nm for 𝜋─𝜋* and n-𝜋* transitions, respectively. [18,19] The X-band EPR spectra of the complexes [Cu(L)Cl] -NHEt 3…”

Section: Structure Description Of Zn(ii) Complexesmentioning

confidence: 99%

Pyridine‐2,6‐Dicarboxamide Proligands and their Cu(II)/Zn(II) Complexes Targeting Staphylococcus Aureus for the Attenuation of In Vivo Dental Biofilm

Chaudhary,

Agrahari,

Biswas

et al. 2024

Adv Healthcare Materials

View full text Add to dashboard Cite

In the pursuit to combat stubborn bacterial infections, particularly those stemming from gram‐positive bacteria, our study is an attempt to craft a precision‐driven platform characterized by unparalleled selectivity, specificity, and synergistic antimicrobial mechanisms. Leveraging remarkable potential of metalloantibiotics in antimicrobial applications, herein, we rationally design, synthesize, and characterize a new library of Pyridine‐2,6‐dicarboxamide ligands and their corresponding transition metal Cu(II)/Zn(II) complexes. The lead compound L11 demonstrate robust antibacterial properties against Staphylococcus aureus (MIC = 2‐16 µg/mL), methicillin and vancomycin‐resistant S. aureus (MIC = 2‐4 µg/mL) and exhibit superior antibacterial activity when compared to FDA‐approved vancomycin, the drug of last resort. Additionally, the compound exhibited notable antimicrobial efficacy against resistant enterococcus strains (MIC = 2‐8 µg/mL). To unravel mechanistic profile, advanced imaging techniques including SEM and AFM were harnessed, collectively suggesting a mechanistic pathway involving cell wall disruption. Live/dead fluorescence studies further confirm efficacy of L11 and its complexes against S. aureus membranes. Our translational exploration extends to a rat model, indicating promising In‐vivo therapeutic potential. Thus, our comprehensive research initiative has capabilities to transcends the confines of our laboratory, heralding a pivotal step toward combatting antibiotic‐resistant pathogens and advancing the frontiers of metalloantibiotics based therapy with a profound clinical implication.This article is protected by copyright. All rights reserved

show abstract

Ethylene Polymerization Using Site‐Selective Pyridine‐Amide Based Iron Complexes

Cited by 8 publications

References 58 publications

Research Progress of Iron Catalysts with N,N,N‐tridentate Ligands for Ethylene Polymerization

Research Progress of Iron Catalysts with N,N,N‐tridentate Ligands for Ethylene Polymerization

املاح الفلزات الانتقالية الأولى للدايازونيوم المشتق من مركب حلقي غير متجانس للنيتروجين تحضيرو تشخيص و الفعالية الحيوية

Pyridine‐2,6‐Dicarboxamide Proligands and their Cu(II)/Zn(II) Complexes Targeting Staphylococcus Aureus for the Attenuation of In Vivo Dental Biofilm

Contact Info

Product

Resources

About