Synthesis and characterization of copper(II) and nickel(II) complexes of a di-N-carboxymethylated tetraaza macrocycle

被引:24
作者
Choi, KY [1 ]
Suh, IH
Kim, JG
Park, YS
Jeong, SI
Kim, IK
Hong, CP
Choi, SN
机构
[1] Mokwon Univ, Dept Chem, Taejon 302729, South Korea
[2] Chungnam Natl Univ, Dept Phys, Taejon 305764, South Korea
[3] Wonkwang Univ, Dept Chem, Iksan 570749, South Korea
[4] Kongju Natl Univ, Dept Chem Educ & Chem, Kongju 314701, South Korea
关键词
crystal structure; N-functionalized macrocycle; nickel(II) complex; copper(II) complex;
D O I
10.1016/S0277-5387(99)00219-3
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The reaction of 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,0(1.18),0(7.12)]docosane (L-1) with bromoacetic acid produced the macrocycle (L-2=2,13-bis(2-carboxymethyl)-3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,0(1.18),0(7.12)]docosane) in which two carboxymethyl groups are appended. The complexes [NiL2]. 4H(2)O (2) and [CuL2]. 4H(2)O (3) have been prepared and characterized. The two pendant carboxymethyl groups of the macrocyclic ligand are trans to each other, and the absolute configuration is a trans-III in the solid state. The crystal structures of 2 and 3 revealed an axially elongated octahedral geometry with four nitrogen atoms of the macrocycle and two oxygen atoms of the pendant arms at the axial positions. The nickel(II) and copper(II) ions are located at an inversion center. Macrocycle L-2 reacts more rapidly with metal (II) ions than does L-1. Spectra and electrochemical behaviors of the complexes are also discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:3013 / 3018
页数:6
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