SYNTHESIS, PROTONATION AND COORDINATION ABILITIES OF THE OPEN-CHAIN POLYAMINE 4,8,11,15-TETRAAZAOCTADECANE-1,18-DIAMINE

被引：21

作者：

AGUILAR, JA

BIANCHI, A

GARCIAESPANA, E

LUIS, SV

LLINARES, JM

RAMIREZ, JA

SORIANO, C

机构：

[1] UNIV FLORENCE,DEPT CHEM,I-50144 FLORENCE,ITALY

[2] UNIV VALENCIA,FAC PHARM,DEPT ORGAN CHEM,E-46100 BURJASSOT,SPAIN

[3] UNIV JAUME 1,DEPT EXPTL SCI,ORGAN CHEM LAB,E-12080 CASTELLO DE PLANA,SPAIN

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1994年 / 05期

关键词：

D O I：

10.1039/dt9940000637

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new open-chain polyamine 4,8,11,15-tetraazaoctadecane-1,18-diamine has been synthesised and characterized. The acid-base behaviour and the co-ordination abilities towards Cu2+, Ni2+, Co2+, Zn2+, Cd2+ and Pb2+ have been studied by potentiometry at 298.1 K in 0.15 mol dm-3 NaClO4, as well as by H-1 and C-13 NMR spectroscopy. The protonation pattern shows the effects produced by the presence of primary and secondary nitrogen atoms as well as ethylenic and propylenic hydrocarbon chains within the molecule. The stability and spectroscopic data show that at most four of the six nitrogens present are involved in co-ordination to the different metal ions. The contrast to other hexaamines, this compound is able to form binuclear species with all the metal ions studied. Formation of predominant binuclear hydroxo species has been detected in a number of systems.

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页码：637 / 644

页数：8

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