87518-61-4Relevant articles and documents
A new tetradentate mixed aza-thioether macrocycle and its complexation behavior towards Fe(II), Ni(II) and Cu(II) ions
Chan, Siu-Chung,Ng, Sze-Wing,Wong, Chun-Yuen,Yeung, Chi-Fung,Yiu, Shek-Man
, (2020/05/05)
A new tetradentate mixed aza-thioether macrocyclic ligand 2,6-dithia[7](2,9)-1,10-phenanthrolinophane ([13]ane(phenN2)S2) was successfully synthesized. Reacting metal precursors [Fe(CH3CN)2(OTf)2], Ni(ClO4)2·6H2O, and Cu(ClO4)2·6H2O with one equivalent of [13]ane(phenN2)S2 afforded [Fe([13]ane(phenN2)S2)(OTf)2] (1), [Ni([13]ane(phenN2)S2)](ClO4)2 (2(ClO4)2), and [Cu([13]ane(phenN2)S2)(OH2)](ClO4)2 (3(ClO4)2), respectively. The structures of [13]ane(phenN2)S2 and all of its metal complexes were investigated by X-ray crystallography. The [13]ane(phenN2)S2 was found to behave as a tetradentate ligand via its donor atoms N and S.
Catalytic hydrolysis of phosphate esters by metallocomplexes of 1,10-phenanthroline derivatives in micellar solution
Weijnen, John G. J.,Engbersen, Johan F. J.
, p. 351 - 357 (2007/10/02)
Divalent metal-ion complexes of 2,9-bis-1,10-phenanthroline (C12Phen-MII) in neutral Brij 35 micelles catalyse the hydrolysis of various phosphate triesters, diesters and monoesters.The catalytic activity of C12Phen-MII has been compared with that of the metal-ion complexes of its water-soluble counterpart 2,9-bis-1,10-phenanthroline (C1Phen-MII).Saturation kinetics provide evidence for preliminary formation of ligand-MII-phosphate ester complexes, which decay to products.The hydroysis of diphenyl 4-nitrophenyl phosphate (1b) coordinated to C12Phen-ZnII proceeds 8700 times faster than the hydrolysis of 1b in the absence of metallocatalyst.Kinetic studies indicate that phosphate triesters containing a metal-ion-binding site in close proximity to the phosphoryl bond, i.e., diphenyl 5-nitro-2-pyridyl phosphate (2b) and diphenyl 5-nitro-8-quinolyl phosphate (3), are hydrolysed by the same mechanism as 1b.