Synthesis, crystal structure and properties of the copper(II) complex of a new dioxocyclam appended with two 8-methylquinolines as additional donor pendants (dioxocyclam=1,4,8,11-tetraazacyclotetradecane-5,7-dione)

被引：26

作者：

Bu, XH ^{[1
]}

Zhang, ZH ^{[1
]}

An, DL ^{[1
]}

Chen, YT ^{[1
]}

Shionoya, M ^{[1
]}

Kimura, E ^{[1
]}

机构：

[1] HIROSHIMA UNIV,SCH MED,DEPT MED CHEM,MINAMI KU,HIROSHIMA 734,JAPAN

来源：

INORGANICA CHIMICA ACTA | 1996年 / 249卷 / 01期

关键词：

crystal structures; copper complexes; azamacrocyclic ligand complexes;

D O I：

10.1016/0020-1693(96)05020-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A macrocyclic dioxotetraamine ligand 1,11-bis(quinolin-8-ylmethyl)-1,4,8,11-tetraazacyclotetradecane-5,7-dione (H(2)L) has been newly synthesized and characterized. The resulting dioxocyclam readily coordinates Cu(II) with concomitant double deprotonation of the ligand. The Cu(II) complex of H(2)L has been isolated as a single crystal and the structure determined by X-ray diffraction analysis. CuL . CH3COOH, C32H36CuN6O4, crystallizes in the triclinic crystal system P-1 space group with a = 11.162(2), b = 12.246(3), c = 13.347(3) Angstrom, alpha = 67.76(2), beta = 65.36(2), gamma = 67.70(2)degrees, Z = 2, R(R(2)) = 0.058 (0.063) for 2300 observed reflections with I > 3 sigma (I). The solution behaviors of CuL (1) have been further studied with ESR and UV-Vis techniques. A remarkable red-shift was observed for the maxima absorption band of the electronic spectra of Cut (1) in comparison to that of CuL(0) (H(2)L(0), dioxocyclam = 1,4,8,11-tetraazacyclotetradecane-5,7-dione).

引用

页码：125 / 130

页数：6

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