.3,5 - Disubstituted Triazoles In Situ Synthesis And Its Complexes Constructed

Solvothermal in situ metal/ligand reaction is a novel synthetic method. More and more coordinated chemists focus on this field due to its great potential in finding new organic reaction, elucidation of reaction mechanisms as well as generation of novel coordination compounds.Herein we used a novel solvothermal in situ reaction to synthesis the organic ligands. We used organonitriles, ammonia and copper salt as starting materials, and carried out an in situ metal/ligand reaction with a demetallation process followed, finally got 3,5-bis (2-pyridyl)-1H-1,2,4-triazole, 3,5-bis (4-pyridyl)-1H-1,2,4-triazole and 3,5-bis (2-pyrazinyl)-1H-1,2,4-triazole as products separately .Then we employed the synthesized ligand 3,5-bis (4-pyridyl)-1H-1,2,4-triazole (Hbpt) to construct coordinate complexes via reaction of Hbpt with metal ions Colbat, Copper and Silver. After introducing the auxiliary ligand benzenedicarboxylate, we finally got a serial of coordination polymers based on Hbpt, which exhibited interesting structure diversity, include (4, 4), (4¹²·6³) and (6⁴·8²) network and so on.It is worth noting that the complexes [Co₂(Hbpt)₂(ip)₂]·bpy(7) and [Co(Hbpt)(5-Me-ip)]·bpy·H₂O(8) exhibited interesting porous structure. In the structure, the guest pyridine molecular was captured by triazole and lattice water through hydrogen interaction in the three dimension pore. Further TG-DSC, XRD study and comparison of solvated and desolvated results verified the compound 7 and 8 both could stably lose the guest pyridine molecular while heated to 300 degree, and possessed some kinds of absorb property, which may be used in the related field such as storage gas, catalyst material and etc.