Dinuclear silver(I) complexes for the design of metal-ligand networks based on triazolopyrimidines

作者：Caballero Ana B^*; Maclaren Jana K; Rodriguez Dieguez Antonio; Vidal Isaac; Dobado Jose A; Salas Juan M; Janiak Christoph

来源：Dalton Transactions, 2011, 40(44): 11845-11855.

DOI：10.1039/c1dt10603a

Silver(I) coordination complexes with the versatile and biomimetic ligands 1,2,4-triazolo[1,5-a]pyrimidine (tp), 5,7-dimethyl-1,2,4-triazolo[1,5-a]pyrimidine (dmtp) and 7-amine-1,2,4-triazolo[1,5-a]pyrimidine (7atp) all feature dinuclear [Ag-2(mu-tp)(2)](2+) building units (where tp is a triazolopyrimidine derivative), which are the preferred motif, independently of the counter-anion used. According to AIM (atoms in molecules) and ELF (electron localization function) analyses, this fact is due to the great stability of these dinuclear species. The complexes structures range from the dinuclear entities [Ag-2(mu-tp)(2)(CH3CN)(4)](BF4)(2) (1), [Ag-2(mu-tp)(2)(CH3CN)(4)](ClO4)(2) (2), [Ag-2(mu-7atp)(2)](ClO4)(2) (3) and [Ag-2(mu-dmtp)(2)(CH3CN)](PF6)(ClO4) (4) over the 1D polymer chain [Ag-2(mu-CF3SO3)(2)(mu-dmtp)(2)](n) (5) to the 3D net {[Ag-2(mu(3)-tp)(2)](PF6)(2)center dot-6H(2)O}(n) (6) with NbO topology.

• 出版日期2011