Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 19847-12-2, Name is Pyrazinecarbonitrile, SMILES is N#CC1=NC=CN=C1, belongs to Pyrazines compound. In a document, author is Wang, Yun-Juan, introduce the new discover, HPLC of Formula: C5H3N3.
Modulation of the properties of dinuclear lanthanide complexes through utilizing different beta-diketonate co-ligands: near-infrared luminescence and magnetization dynamics
A family of new dinuclear lanthanide complexes as the simplest entities showing intramolecular magnetic interactions, [Ln(2)(dbm)(2)(L)(2)(CH3OH)(2)] (Ln = Tb (1), Dy (2), Ho (3), Er (4), Yb (5), Lu (6)), [Ln(2)(acac)(2)(L)(2)(EtOH)(2)] (Ln = Dy (7), Er (8)), [Dy-2(TTA)(2)(L)(2)(CH3OH)(2)]center dot 2CH(2)Cl(2) (9) and [Dy-2(tfa)(2)(L)(2)(CH3OH)(2)] (10) (H2L = N ‘-(2-hydroxy-5-methylphenyl)-pyrazine-2-carbohydrazide, Hdbm = 1,3-diphenyl-1,3-propanedione, Hacac = acetylacetone, HTTA = 2-thenoyltrifluoroacetone, Htfa = trifluoroacetylacetone), were constructed successfully by the reaction of a Schiff base ligand H2L and four different beta-diketonate salts. As for complexes 4, 5 and 8, all exhibit the characteristic emission peaks of the corresponding Er3+, Yb3+ and Er3+ ions, respectively. Meanwhile, the excitation wavelength (510 nm) of 5 is located in the visible region, confirming its significant potential application value. Magnetic studies indicate that complexes 9 and 10 exhibit characteristic slow relaxation of magnetization with the energy barriers (U-eff) of 102 K for 9 and 140 K for 10 under a zero dc field. Under the optimized dc fields, slow magnetic relaxations are present in 2 and 7, and the U-eff values of 9 and 10 have been improved. This proves that the beta-diketonate co-ligands deserve an important role in regulating Dy-SMMs influenced by the diverse perturbations of the axial crystal field originating from minor changes in the coordination environment.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 19847-12-2 is helpful to your research. HPLC of Formula: C5H3N3.