Safety of 5-(4-Pyridyl)-1H-tetrazole. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 5-(4-Pyridyl)-1H-tetrazole, is researched, Molecular C6H5N5, CAS is 14389-12-9, about Synthesis, photophysical and electrochemical investigation of dinuclear tetrazolato-bridged rhenium complexes.
Rhenium binuclear tetrazolylbenzonitrile and tetrazolylpyridine-bridged phenanthroline complexes exhibit emission at 490-560 nm in CH2Cl2 solution both at room temperature and at 77 K. Starting from anionic tetrazole-based ligands, namely, 5-(4′-cyanophenyl)tetrazolate and 5-(4′-pyridyl)tetrazolate, mononuclear and dinuclear complexes of fac-[Re(CO)3(phen)]+ (phen = 1,10-phenanthroline) were prepared and characterized. For the mononuclear complexes, regioselective coordination of the metal fragments on the neg. charged tetrazolato ring is exclusively obtained. Coordination to the benzonitrile and pyridine groups was achieved by previous alkylation of the tetrazole ring. Dinuclear complexes were obtained by treatment of the corresponding mononuclear tetrazole-bound complexes with fac-[Re(CO)3(phen)(THF)]+. The second rhenium fragment coordinated either to the pyridine ring or, in the case of the benzonitrile ligand, to the tetrazole ring. The electrochem. properties were probed in an imidazolium ionic liquid, highlighting reduction processes centered on the phen ligand and oxidation processes localized on the metal. The photophys. properties of the complexes are characterized by phosphorescent emission from triplet metal-to-ligand charge transfer excited states, with trends in the lifetime and quantum yield in qual. agreement with the energy gap law. The two dinuclear complexes show almost superimposable emission profiles: in the 5-(4′-cyanophenyl)tetrazolate-bridged complex, the two metal fragments coordinated to the tetrazole are equivalent and share a pos. charge of +1. On the other hand, the photophys. properties of the 5-(4′-pyridyl)tetrazolate-bridged dinuclear complex suggest energy transfer between the two metal centers.
Here is a brief introduction to this compound(14389-12-9)Safety of 5-(4-Pyridyl)-1H-tetrazole, if you want to know about other compounds related to this compound(14389-12-9), you can read my other articles.
Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis