Crystal structure of (E)-4-bromo-N-(pyridin-2-ylmethylene)aniline, C12H9BrN2

Diko, Nyameka; Zamisa, Sizwe J.; Friedrich, Holger B.; Shozi, Mzamo

doi:10.1515/ncrs-2019-0264

Cited by 2 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The synthesis of compounds L 2 and L 3 has been reported before, [15,16] but their in vitro biological activities have not been explored. Hence, our interest in studying the biological potential of…”

Section: Synthesis Of Schiff Bases L 1 -Lmentioning

confidence: 99%

Synthesis and Therapeutic Potential of selected Schiff Bases: In vitro Antibacterial, Antioxidant, Antidiabetic, and Computational Studies

Adeleke,

Oladipo,

Luckay

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

In this study, three Schiff base compounds, (E)‐N‐(4‐bromophenyl)‐1‐(2‐nitrophenyl)methanimine (L1), (E)‐2‐((mesitylimino)methyl)phenol (L2), and (E)‐N‐(4‐bromophenyl)‐1‐(pyridin‐2‐yl)methanimine (L3), were synthesized and characterized by various spectroscopic techniques. The antibacterial activity of the compounds was evaluated against Gram‐positive and Gram‐negative bacteria, with L3 demonstrating the most significant activity. The compounds were also evaluated for their antioxidant activity using DPPH, FRAP, and NO scavenging assays. While the compounds exhibited concentration‐dependent scavenging of free radicals, their activity was not as significant as that of the reference, Trolox. Furthermore, L1–L3 were tested for their α‐amylase and α‐glucosidase inhibitory activity, with L1 showing the highest inhibitory activity among the three compounds. The DFT study showed that L1 is the most chemically reactive among the three compounds, having the lowest energy band gap value of 3.82 eV in acetonitrile, the experimental solvent. Molecular docking predicted that L1 and L2 have very strong inhibition equivalents to the standard drugs against bacteria and diabetes. All the compounds showed stronger inhibition against α‐glucosidase than acarbose, while only L1 and L2 exhibited stronger inhibition against α‐amylase than acarbose. It can be deduced that the theoretical studies corroborate well with the experimental, and compounds with the electron‐withdrawing group displayed better medicinal properties than their electron‐donating counterparts.

show abstract

Section: Synthesis Of Schiff Bases L 1 -Lmentioning

confidence: 99%

Synthesis and Therapeutic Potential of selected Schiff Bases: In vitro Antibacterial, Antioxidant, Antidiabetic, and Computational Studies

Adeleke,

Oladipo,

Luckay

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…In addition, it is worth noting that these two H-H short contacts evolves from 300 Kt o1 70 Ki namanner to be relativelye qual in length just beforet he SCO (Figure 4). Since the conformation of the PM-pBrA ligand when not coordinated is,a ccording to its crystal structure, strongly driven by HÀHc ontacts, [18] it is highly probable that this situation favors the rotationo ft he ligand. The modifications of the inter-atomic contact topology at the SCO, including the significant motion of NCS ligands ( Figure 3), therefore, probably leads the phenyl ring to an unstable position ( Figure S10), where it maye asily be perturbed by external stimuli.N ote that there is no such conformationalc hangei n the manganese compound 2 ( Figure S11), also confirming that the phenylr otation is indeed associated to the SCO.…”

mentioning

confidence: 99%

Unprecedented Reverse Volume Expansion in Spin‐Transition Crystals

Daro

Pillet

Marchivie

et al. 2020

Chemistry A European J

View full text Add to dashboard Cite

The current craze for research around the spin crossover phenomenon can be justified to some extent by the mechanical properties due to the decrease of volume associated with the transition of the metal ion from the HS state to the LS state. As demonstrated here, the molecular complex [Fe(PM‐pBrA)2(NCS)2] exhibits, on the contrary, an increase of the unit‐cell volume from HS to LS. This counter‐intuitive and unprecedented behavior that concerns both the thermal and the photoexcited spin conversions is revealed by a combination of single‐crystal and powder X‐ray diffraction complemented by magnetic measurements. Interestingly, this abnormal volume change appears concomitant with the wide rotation of a phenyl ring which induces a drastic modification, though reversible, of the structural packing within the crystal. In addition, the light‐induced HS state obtained through the Light‐Induced Excited Spin‐State Trapping shows a remarkably high relaxation temperature, namely T(LIESST), of 109 K, one of the highest so far reported. The above set of quite unusual characteristics opens up new fields of possibilities within the development of spin crossover materials.

show abstract

Crystal structure of (E)-4-bromo-N-(pyridin-2-ylmethylene)aniline, C₁₂H₉BrN₂

Abstract: C12H9BrN2, monoclinic, P21/c (no. 14), a = 19.2197(12) Å, b = 4.8579(3) Å, c = 11.4679(9) Å, β = 106.880(4)°, V = 1024.60(12) Å3, Z = 4, Rgt(F) = 0.0449, wRref(F2) = 0.1257, T = 100(2) K.

Cited by 2 publications

References 14 publications

Synthesis and Therapeutic Potential of selected Schiff Bases: In vitro Antibacterial, Antioxidant, Antidiabetic, and Computational Studies

Synthesis and Therapeutic Potential of selected Schiff Bases: In vitro Antibacterial, Antioxidant, Antidiabetic, and Computational Studies

Unprecedented Reverse Volume Expansion in Spin‐Transition Crystals

Contact Info

Product

Resources

About