Ru(II) complexes of tetradentate ligands related to 2,9-di(pyrid-2′-yl)-1,10-phenanthroline was written by Zhang, Gang;Zong, Ruifa;Tseng, Huan-Wei;Thummel, Randolph P.. And the article was included in Inorganic Chemistry in 2008.Related Products of 89978-52-9 This article mentions the following:
1,10-Phenanthrolines were prepared having addnl. ligating substituents at the 2,9-positions. These substituents were either a 4-substituted pyrid-2-yl, quinolin-2-yl, 1,8-naphthyrid-2-yl, N-Me imidazo-2-yl, or N-Me benzimidazo-2-yl group. Addnl., 3,6-di-(pyrid-2′-yl)-dipyrido[3,2-a:2′,3′-c]phenazine was prepared All but two of these ligands coordinated Ru(II) in a tetradentate equatorial fashion with two 4-methylpyridines bound in the axial sites. An x-ray structure anal. of the diimidazolyl system indicates considerable distortion from square planar geometry in the equatorial plane. Previously reported variations in the axial ligand for such complexes appear to have a stronger effect on the electronic absorption and redox properties of the system than similar changes in the equatorial ligand. In the presence of excess Ce(IV) as a sacrificial oxidant at pH 1, all the systems examined catalyze the decomposition of H2O to generate O. Turnover numbers are modest, ranging from 146 to 416. In the experiment, the researchers used many compounds, for example, Ethyl 2-bromoisonicotinate (cas: 89978-52-9Related Products of 89978-52-9).
Ethyl 2-bromoisonicotinate (cas: 89978-52-9) belongs to pyridine derivatives. In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Related Products of 89978-52-9