Dinuclear zinc(ii) dithiocarbamate macrocycles: ditopic receptors for a variety of guest molecules
作者:Wallace W. H. Wong、David Curiel、Andrew R. Cowley、Paul D. Beer
DOI:10.1039/b415935g
日期:——
reveal a correlation between the strength of complexation and complementary receptor cavity : guestmolecule size. In particular, the X-ray structure of a 1 : 1 host–guest complex between a dinuclear zinc(II) dtc receptor and DABCO illustrates the cooperative nature in which the dinuclear receptor associates with the bidentate guest.
一系列双核的合成 二硫代氨基甲酸锌(II) (dtc)含有的大环受体 芳基报告了不同尺寸的间隔基。从1 H NMR滴定研究中可以看出,这些受体具有结合各种中性和阴离子性双齿客体物种的能力,包括1,4-二氮杂双环[2.2.2]辛烷(DABCO),异烟酸酯和对苯二甲酸酯以1:1分子内包合物的形式存在。稳定性常数的测定揭示了络合强度与互补受体腔:客体分子大小之间的相关性。尤其是,双核锌(II)dtc受体与DABCO之间的1:1主客复合物的X射线结构说明了双核受体与双齿客体缔合的合作性质。
Antiaggregatorische und anticoagulante Eigenschaften von Oligoaminen, 3. Mitt.: m-Phenylenbisaminoalkane
Es wurden 17 Titelverbindungen synthetisiert, von denen 16 die durch Collagen induzierte Thrombocytenaggregation in Konzentrationen von 40 bis 6 μmol/L zu 50% hemmten. Die Gerinnungsfähigkeit von Blutplasma ‐ dargestellt als Verlängerung von Thromboplastin‐ und partieller Thromboplastinzeit ‐ wurde in Konzentrationen zwischen 4 · 10−4 und 1 · 10−4 mol/L auf 25% der Norm herabgesetzt.
Self-assembled dithiocarbamate–copper(ii) macrocycles for electrochemical anion recognition
作者:Paul D. Beer、Neil Berry、O. Danny Fox、Miguel E. Padilla-Tosta、Sarah Patell、Michael G. B. Drew
DOI:10.1039/b007296f
日期:——
A novel family of redox-active dinuclear
copper(II)-based macrocycles self-assembled from dithiocarbamate
ligands has been synthesised; a naphthyl-spaced complex exhibits selective
electrochemical recognition of perrhenate and dihydrogenphosphate
anions.
Metal-directed assembly of large dinuclear copper(II) dithiocarbamate macrocyclic complexes
作者:James Cookson、Emma A.L. Evans、John P. Maher、Christopher J. Serpell、Rowena L. Paul、Andrew R. Cowley、Michael G.B. Drew、Paul D. Beer
DOI:10.1016/j.ica.2009.09.052
日期:2010.4
The synthesis of a range of dinuclear Cu(II) dithiocarbamate (dtc)-based macrocycles and their characterisation are described. By carefully tuning the size of the aromatic spacer, cavities of different dimensions can be designed. The length and flexibility of the chosen spacer group dictates the intermetallic distance and hence the degree of communication between the two metal centres as evidenced by electrochemical and EPR experiments. This is illustrated by crystallographic evidence that show the macrocycles can host guests (such as CH2Cl2) or can fold and form unexpected Cu(I) dtc clusters. (C) 2009 Elsevier B.V. All rights reserved.