Results 71 to 80 of about 6,154 (202)

A Comprehensive Review of Adsorbents for Rare Earth Separation: Design, Synthesis, Adsorption Performance, and Mechanisms

Rare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Rare earth elements (REEs) play an irreplaceable role in modern technology and industry. However, due to the highly similar physicochemical properties among REEs, their separation remains a significant challenge. Additionally, REEs often exist in low‐concentration solutions, making efficient REE recovery an urgent task.
Miao‐Miao Huang, Jun Tan, Liu‐Yin Xia, Kai Han, Hong‐Yan Cai, Xin Ma, Shuai Wang   +6 more
wiley   +1 more source

2-Phenyl-7-(4-pyridylmethylamino)-1,2,4-triazolo[1,5-a][1,3,5]triazin-5(4H)-oneFused heterocyclic systems with s-triazine ring. Part 17. For part 16, see Dolzhenko et al. (2011).

Acta Crystallographica Section E, 2011
In the title compound, C16H13N7O, the 1,2,4-triazolo[1,5-a][1,3,5]triazine heterocyclic system is essentially planar (r.m.s. deviation = 0.0375 Å).
Lip Lin Koh, Wai Keung Chui, Anna V. Dolzhenko, Geok Kheng Tan, Anton V. Dolzhenko   +4 more
doaj   +1 more source

Isomeric triazines exhibit unique profiles of bioorthogonal reactivity. [PDF]

, 2019
Expanding the scope of bioorthogonal reactivity requires access to new and mutually compatible reagents. We report here that 1,2,4-triazines can be tuned to exhibit unique reaction profiles with biocompatible strained alkenes and alkynes.
Briggs, Jeffrey S, Houk, KN, Kamber, David N, Liang, Yong, Liu, Fang, Long, Zane G, Nguyen, Sean S, Prescher, Jennifer A, Row, R David, Shih, Hui-Wen   +9 more
core  

Solubility Challenges and Strategies for Organic Sodium‐Ion Batteries: Status and Perspectives

Small, Volume 22, Issue 12, 25 February 2026.
Organic sodium‐ion batteries (OSIBs) have garnered interest due to their low cost, abundant resources, and sustainability. However, the solubility of organic materials in aprotic electrolytes results in electrode deterioration, active material loss, and poor cycling stability.
Ying Qi, Huaping Zhao, Lizhuang Chen, Yong Lei   +3 more
wiley   +1 more source

Synthesis, Characterization, and BSA-Binding Studies of Novel Sulfonated Zinc-Triazine Complexes

Bioinorganic Chemistry and Applications, 2018
Four Zn(II) complexes containing a pyridyl triazine core (L1 = 3-(2-pyridyl)-5,6-di(2-furyl)-1,2,4-triazine-5′,5″-disulfonic acid disodium salt and L2 = 3-(2-pyridyl)-5,6-diphenyl-1,2,4-triazine-4′,4″-disulfonic acid sodium salt) were synthesized, and ...
Nalin Abeydeera, Inoka C. Perera, Theshini Perera   +2 more
doaj   +1 more source

Efficient Routes to Pyrazolo[3,4-e][1,2,4]triazines and a New Ring System: [1,2,4]Triazino[5,6-d][1,2,3]triazines

Molecules, 2010
Arylhydrazonomalononitriles 1a,b react with phenylhydrazine to yield amidrazones 2a,b that cyclize to give 2-aryl-5-phenylhydrazono-2,5-dihydro-[1,2,4]-triazine-6-carbonitriles 5a,b upon reaction with dimethylformamide dimethylacetal (DMFDMA).
Hamad Mohamed Al-Matar, Khaled Dessouky Khalil, Doa’a Mohamed Al-Dorri, Mohamed Helmy Elnagdi   +3 more
doaj   +1 more source

Recent Advances in Bioconjugation of Aromatic Amino Acid Residues by a Reactivity‐Guided Approach

The Chemical Record, Volume 26, Issue 2, February 2026.
This review highlights recent advances in the bioconjugation of aromatic amino acids residues, focusing on strategies that leverage their inherent chemical reactivity to enable precise and versatile modifications of biomacromolecules, illustrating relevant applications.
Bruno M. da S. Santos, Lívia C. R. M. da Frota, Thais G. Silva, Fernanda G. Finelli   +3 more
wiley   +1 more source

Synthesis of Some New 1,2,4-Triazine and 1,2,5-Oxadiazine Derivatives with Antimicrobial Activity

Heteroatom Chemistry, 2019
1,2,4-Triazine and 1,2,5-oxadiazine derivatives 2–12 were obtained from treated 1,3-oxazolone (1) with phenyl hydrazine or hydroxylamine hydrochloride.
Heba E. Hashem, Ahmed M. Abo-Bakr
doaj   +1 more source

5,5′,6,6′-Tetramethyl-3,3′-bi-1,2,4-triazine

Acta Crystallographica Section E, 2011
In the title compound, C10H12N6, the two 5,6-dimethyl-1,2,4-triazine halves of the molecule are related by a centre of symmetry. The two triazine rings are coplanar to within a maximum deviation of 0.013 (2) Å from the mean ...
Ewa Wolińska, Zbigniew Karczmarzyk, Andrzej Rykowski, Waldemar Wysocki   +3 more
doaj   +1 more source

Unsymmetrical β‐Fused Blatter Radical Zinc Phthalocyanines

Chemistry – A European Journal, Volume 32, Issue 4, 23 January 2026.
Herein, we report the first synthesis of a new class of β‐fused Blatter–Zn phthalocyanines featuring a persistent radical π‐system, π–π‐driven crystal packing, and SOMO‐centered redox behavior. Single‐crystal X‐ray diffraction shows packing motifs dominated by centrosymmetric π‐π dimers.
Adrián Hernández, Georgia A. Zissimou, Javier Ortiz, Andreas Kourtellaris, Christos P. Constantinides, Daniel B. Lawson, Ziqi Hu, Eugenio Coronado, Panayiotis A. Koutentis, Ángela Sastre‐Santos   +9 more
wiley   +1 more source