Synthesis and characterization of iron(III) complexes of N4 Schiff base macrocycles

被引：3
|
作者：
Brewer, G [1 ]
Kamaras, P
May, L
Prytkov, S
机构：
[1] Catholic Univ Amer, Dept Chem, Washington, DC 20064 USA
[2] Georgetown Univ, Dept Chem, Washington, DC 20060 USA
来源：
INORGANIC CHEMISTRY COMMUNICATIONS | 1999年 / 2卷 / 01期
基金：
美国国家科学基金会;
关键词：
macrocycle; Schiff base complexes; crystal structures; iron(III) complexes;
D O I：
10.1016/S1387-7003(98)00131-2
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Iron(III) complexes of the diprotic N-4 Schiff base macrocycles, 7,8,15,16,17,18-hexahydrow-dibenzo [e,m] [1,4,8,11] tetraazacyclotetradecine (H-2(2,2 mac)) and 8,9,16,17,18,19-hexahydro-7H-dibenzo [e,n] [1,4,8,12] tetraazacyclopentaadecine (H-2(3,2mac)),were prepared by the metathesis reaction of anhydrous iron(III) bromide with the disodium or magnesium complexes of the dianionic ligands in THF under an inert atmosphere. The complexes exhibit the intermediate spin state as evidenced by magnetic susceptibility and Mossbauer spectroscopy. Fe(3,2 mac)Br is structurally characterized as a distorted square pyramid with the four nitrogen atoms in the basal positions and the bromide occupying the axial site. The average iron to nitrogen bond distance is 1.921 Angstrom. (C) 1999 Elsevier Science S.A. All rights reserved.
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页码：3 / 6
页数：4
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