566896-41-1Relevant academic research and scientific papers
Dinuclear nickel(II) complexes of reduced asymmetric compartmental ligands
Adams, Harry,Clunas, Scott,Fenton, David E.,Spey, Sharon E.
, p. 625 - 630 (2003)
The reaction of the reduced asymmetric compartmental proligand 2-{[(2-dimethylaminoethyl)ethylamino]methyl}-4-methyl-6-{[(pyridin-2-ylmethyl)am ino]methyl}phenol, HL4 with nickel(II) acetate in the presence of non-coordinating anions gave dinuclear nickel(II) complexes. The crystal structures of [Ni2L6(OAc)(μ-OAc)(OH2)(CH3OH)][P F6], 2, [Ni2L4(μ-OAc)2(CH3OH)] [PF6], 3, [Ni2L4(μ-OAc)2(OH2) (CH3OH)][PF6], 4, and [Ni2L4(μ-OAc)2 (CH3OH)2][BPh4], 5, are reported. 2-[(2-Dimethylaminoethylamino)methyl]-6-{[(2-dimethylaminoethyl)ethylamino]methy l}-4-methyl-phenol, HL5, was found to react with Ni(ClO4)2·4H2O and NaBPh4 in the presence of urea. to give [Ni2L5(OH)(OH2)2(urea)] [BPh4]2, 6, the dinuclear core of which bears some resemblance to that of the active site in urease. The crystal structure reveals the presence of a hydroxo-bridge and an O-bonded molecule of urea.
