Newly Arrival Pipes Sesquisodium Salt - 4,5-Diazafluoren-9-one Cas: 50890-67-0 99% Solid – XD BIOCHEM
Newly Arrival Pipes Sesquisodium Salt - 4,5-Diazafluoren-9-one Cas: 50890-67-0 99% Solid – XD BIOCHEM Detail:
Catalog Number | XD90221 |
Product Name | 4,5-Diazafluoren-9-one |
CAS |
50890-67-0 |
Molecular Formula |
C11H6N2O |
Molecular Weight |
182.1781 |
Storage Details | 2-8°C |
Harmonized Tariff Code | 2933399090 |
Product Specification
Appearance | Solid |
Assay | 99% |
A series of bimetallic complexes of ruthenium(II) bridged by heterocyclic ligands formed by the condensation of 4,5-diazafluoren-9-one with various diamines, hydrazine, 1,4-phenylenediamine, benzidine, and 4,4′-methylenedianiline, results in metal centers separated by various distances. The complexes give rise to metal-to-ligand charge-transfer absorptions in the 450 nm region of the visible spectrum and intraligand pi –> pi transitions in the 300 nm region of the ultraviolet spectrum. The ruthenium(II) centers are oxidized in two closely spaced one-electron processes at potentials more positive than that for Ru(bpy)(3)(2+). The bridging ligands are reduced by two closely spaced one-electron processes at more positive potentials than that for reduction of the coordinated bipyridine ligands ( approximately -1.30 V), although the diazafluorene=N-N=diazafluorene bridging ligand is reduced reversibly in two single-electron steps at E(1/2) values of -0.29 and -0.52 V. After purification by eluting the pure complexes over a silica gel column with various concentrations of 0.10 M NH(4)PF(6) in methanol, emission occurs only in a glassy matrix at 77 K and at low temperatures in solution. The emission lifetimes at 77 K in a 4:1 ethanol:methanol glass are 5 +/- 1 &mgr;s. A variable-temperature emission lifetime study reveals the presence of a low-lying state with DeltaE = approximately 1500 cm(-)(1), and extrapolation to room temperature indicates the emission lifetimes are in the subnanosecond range.
Product detail pictures:
Related Product Guide:
Assume full responsibility to meet all demands of our clients; achieve continuous advancements by promoting the growth of our clients; become the final permanent cooperative partner of clients and maximize the interests of clients for Newly Arrival Pipes Sesquisodium Salt - 4,5-Diazafluoren-9-one Cas: 50890-67-0 99% Solid – XD BIOCHEM , The product will supply to all over the world, such as: Hungary, Algeria, Jordan, Our company always concentrate on the development of the international market. We've got a lot of customers in Russia , European countries, the USA, the Middle East countries and Africa countries. We always follow that quality is foundation while service is guarantee to meet all customers.
By Miguel from Brasilia - 2017.11.01 17:04
As an international trading company, we have numerous partners, but about your company, I just want to say, you are really good, wide range, good quality, reasonable prices, warm and thoughtful service, advanced technology and equipment and workers have professional training, feedback and product update is timely, in short, this is a very pleasant cooperation, and we look forward to the next cooperation!
By Griselda from Kuala Lumpur - 2017.09.30 16:36