Benzimidazolyl The Ferrocenyl Function Complexes Synthesis And Performance

To design materials with anticipatory properties and further exploit the relationship between their structures and properties from organic-metal polymers have become one of the most attractive research fields in modern material chemistry. Therefore, introducing functional benzimidazole or ferrocenoyl thiourea group into the complex molecular systems and further studying the relationship between their structures and properties have been very significance.In this paper, a benzimidazole and two new ferrocenoyl thiourea derivatives ligand have been successfully synthesized and characterized, the relationship between their structures and properties have been further researched.In the first part of this paper, by the assembling of the synthesized benzimidazole ligand with metal salts, four novel complexes 1～4, [CdL₂(NO₃)₂]_n (1),[CdL₂(ClO₄)₂]_n (2),{[CdLSO₄(H₂O)₂]·CH₃OH}_n(3) and {[CoL₂(NO₃)](NO₃)·(CH₃OH)₃}_n (4), which contain ligands 1,1'-(1,3-propylene)bis-benzimidazole(pbbm) have been obtained at room temperature and structurally characterized by elemental analyses, IR, TG-DTG and single crystal X-ray diffractions. Furthermore, the synthesis conditions of these complexes were studied, the biological activity and thermal behaviors as well as thermal decomposition kinetics of the complexes have also been investigated.Single crystal X-ray diffractions show that 1～3 exhibit one-dimensional chain structure, in which the two Cd(II) ions are bridged together through two pbbm ligands. Where as 4 displays infinitely extended two-dimensional reticulation grid structure units in which four Co(II) ions act as corners and four pbbm ligands serve as sides. The thermal chemical studies show that the complexes'of Cd(II) stability were higher to pbbm.The experiments of biology activity confirm that complex 4 has great plant-growth regulatory activity. Compared with pbbm ligand, better inhibitory activities were observed for these complexes 1～3, Inhibitory activities of benzimidazole group were approved. By comparing polymers 1～4, we can conclude that the organic bridging ligands play an important role in the formation of coordination compounds, and the difference of negative ion would lead to the difference of coordinate modes, the difference of metal ion would extremely bring into the difference of biology activity. In the second part, two novel ferrocenoyl thiourea derivatives I and II were synthesized with ferrocene as raw material, and both structure were characterized by elemental analysis, IR and ¹H NMR spectra. In addition, the primary experiments show that they have better plant-growth regulatory activity and inhibitory activities. Furthr researches of them are very significative.