Synthesis and structural studies of 1,4-di(2-pyridyl)-1,2,3-triazole dpt and its transition metal complexes; a versatile and subtly unsymmetric ligand

摘要: The synthesis of the ‘click’ derived 1,4-di(2-pyridyl)-1,2,3-triazole (dpt) chelator/ligand from 2-azidopyridine and 2-ethynylpyridine using Cu(I) TBTA by microwave assisted is presented. complexes subtly unsymmetric dpt ligand with Cu(I), Pt(II), Co(II), Ag(I) were structurally characterised conventional methods, as well single crystal powder diffraction analysis. results studies showed formation discrete molecules displaying preferential binding d-metal cations through pyridyl nitrogen N1 proximal triazolyl N2 i.e. 2-(1H-1,2,3-triazol-4-yl)pyridine or ‘regular' chelate moiety despite presence a second potential pocket 2-(1H-1,2,3-triazol-1-yl)pyridine ‘inverse’ moiety. This selectivity was corroborated study self-assembly 1H NMR titration in CD3CN solution, UV-Vis absorption titrations; former showing broadening proton peaks associated that pocket.