COA of Formula: C5H8N2. Recently I am researching about CYCLOMETALATED IR(III) COMPLEXES; C-H ACTIVATION; PHOTOPHYSICAL PROPERTIES; LIGANDS; RHODIUM; DESIGN; BIDENTATE; PYRAZOLE; HYDRIDE, Saw an article supported by the Ministry of Science and Technology (MOST)Ministry of Science and Technology, China; Research Grant CouncilHong Kong Research Grants Council; City University of Hong Kong, Hong Kong SARCity University of Hong Kong. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Yuan, Y; Gnanasekaran, P; Chen, YW; Lee, GH; Ni, SF; Lee, CS; Chi, Y. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole
Synthesis of the multidentate coordinated chelate N3C-H-2, composed of a linked functional pyridyl pyrazole fragment plus a peripheral phenyl and pyridyl unit, was obtained using a multistep protocol. Preparation of Ir(III) metal complexes bearing a N3C chelate in the tridentate (kappa(3)), tetradentate (kappa(4)), and pentadentate (kappa(5)) modes was executed en route from two nonemissive dimer intermediates [Ir(kappa(3)-N3CH)Cl-2](2) (1) and [Ir(kappa(4)-N3C)Cl](2) (2). Next, a series of mononuclear Ir(III) complexes with the formulas [Ir(kappa(4)-N3C)Cl(py)] (3), [Ir(kappa(4)-N3C)Cl(dmap)] (4), [Ir(kappa(4)-N3C)-Cl(mpzH)] (5), and [Ir(kappa(4)-N3C)Cl(dmpzH)] (6), as well as diiridium complexes [Ir-2(kappa(5)-N3C)-(mpz)(2)(CO)(H)(2)] (7) and [Ir-2(kappa(5)-N3C)-(dmpz)(2)(CO)(H)(2)] (8), were obtained upon treatment of dimer 2 with pyridine (py), 4-dimethylaminopyridine (dmap), 4-methylpyrazole (mpzH), and 3,5-dimethylpyrazole (dmpzH), respectively. These Ir(III) metal complexes were identified using spectroscopic methods and by X-ray crystallographic analysis of representative derivatives 3, 5, and 7. Their photophysical and electrochemical properties were investigated and confirmed by the theoretical simulations. Notably, green-emitting organic light-emitting diode (OLED) on the basis of Ir(III) complex 7 gives a maximum external quantum efficiency up to 25.1%. This result sheds light on the enormous potential of this tetradentate coordinated chelate in the development of highly efficient iridium complexes for OLED applications.
About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Yuan, Y; Gnanasekaran, P; Chen, YW; Lee, GH; Ni, SF; Lee, CS; Chi, Y or concate me.. COA of Formula: C5H8N2
Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics