Dicatechol-diimines:: easily accessible ligands for the self-assembly of dinuclear triple-stranded helicates

被引：44

作者：

Albrecht, M

Janser, I

Kamptmann, S

Weis, P

Wibbeling, B

Fröhlich, R

机构：

[1] Rhein Westfal TH Aachen, Inst Organ Chem, D-52074 Aachen, Germany

[2] Univ Karlsruhe, Inst Phys Chem, D-76128 Karlsruhe, Germany

[3] Univ Munster, Inst Organ Chem, D-48149 Munster, Germany

来源：

DALTON TRANSACTIONS | 2004年 / 01期

关键词：

D O I：

10.1039/b311483j

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Dicatechol ligands 3b-g-H-4 are simply prepared by imine formation of 2,3-dihydroxybenzaldehyde 2 with a series of different diamines 1b-g. An X-ray structural analysis was obtained for the butyl-bridged compound 3e-H4, showing an intramolecular proton transfer and the formation of a chinoidic "keto-amine" structure. The dicatechol derivatives 3b-g-H-4 form dinuclear triple-stranded helicates M-4[(3)(3)Ti-2] with titanium(IV) ions in the presence of alkali-metal carbonate. For the phenyl- and the trans-1,4-cyclohexyl-bridged complexes, K-4[(3b)(3)Ti-2] and Na-4[(3f)(3)Ti-2], X-ray structures were obtained.

引用

页码：37 / 43

页数：7

共 70 条

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[2]

2-3

[3] 3,3′-{(1E,2E)-hydrazine-1,2-diylidenedi[(E)methylylidene]}dibenzene-1,2-diol (BCAz-H4):: an easy to prepare but very useful building block for the self-assembly of triple-stranded helicates;: the X-ray crystal structure of Na4[(BCAz)3Ti2]•7 dmf•H2O [J].