Synthesis Structural And Hydrolytic Studies Of Zinc(li) Complex Of Nnbis (2-aminophenyl) -24-diiminopentane

In this study the synthesis of[N, N' -bis (2-chloroquinoxaline-3-yl)-1 ,3-diaminopropanernand the synthesis, structure and hydrolytic activity of a zinc(lI) complex of N,N'-bis (2-rnaminophenyl)-2,4-diiminopentane are presented.rnIn the first part attempt was made to synthesize a macrocyclic ligand derived fromrn2,3-dichloroquinoxaline and diamine. The reaction between 2,3-dichloroquinoxalinernand excess 1 ,3-diaminopropane led to the formation of a pale yellowish solid. The IR,rn1H NMR and 13N MR of the compound indicated that it is a non-cyclic molecule.rnThe reaction of 1,2-phenylenediamine with acetylacetone in water resulted in thernformation of a ligand that forms a complex with zinc(lI) ion. The complex wasrncharacterized by lH NMR, 13e NMR, IR, conductivity measurement, etc. Thernpreliminary test indicated that rate enhancement by the complex on the hydrolysis ofrntri (p-nitrophenyl) phosphate, p-nitrophenylacetate and 4-nitrophenylbenzoate is inrndecreasing order, in 10% (H20) aq. acetonitrile at 35°e and above.

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