Paper Information

Journal:   JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)   DECEMBER 2010 , Volume 7 , Number 4; Page(s) 820 To 824.
 
Paper: 

SYNTHESIS AND CHARACTERIZATION OF CD(II) MACROCYCLIC SCHIFF BASE COMPLEX WITH TWO 2-AMINOETHYL PENDANT ARMS

 
 
Author(s):  KEYPOUR H.*, DEHGHANI FIROUZABADI A.A., REZAEI VALA M., GOUDARZI AFSHAR H.
 
* FACULTY OF CHEMISTRY, BU-ALI SINA UNIVERSITY, HAMEDAN 65174, IRAN
 
Abstract: 

A new pendant armed Schiff base macrocyclic complex of [CdL] 2+, was prepared via cyclocondensation of 2, 6-bis (2- formylphenoxymethyl) pyridine with branched hexaamine in the presence of Cd (II) ion. The ligand was 23-membered oxaazamacrocycle having two 2-aminoethyl pendant arms [L: 3, 28-dioxa-14, 17-bis (aminoethyl) -11, 14, 17, 20, 34- pentaazatetracyclo [34.3.1] tetratriacontane-1 (34), 4, 6, 8, 10, 20, 22, 24, 26, 30, 32-undecaene]. The complex was investigated by IR, 1H NMR, microanalysis and MALDI mass spectroscopy. The structure of the complex was verified by ab initio HF-MO calculations using a standard 3-21G* basis set. This article introduces an unusual seven-membered chelate ring and shows that by its using, the Cd-N bonds lengths within the macrocycle would be longer and also Cd (II) -pendant amine bonds lengths would be shorter.

 
Keyword(s): MACROCYCLIC COMPLEX, SCHIFF BASE, CADMIUM(II), PENDANT ARM, AB INITIO
 
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