Nanosized Polymetallic Resorcinarene-Based Host Assemblies that Strongly Bind Fullerenes
作者:O. Danny Fox、James Cookson、Emma J. S. Wilkinson、Michael G. B. Drew、Elizabeth J. MacLean、Simon J. Teat、Paul D. Beer
DOI:10.1021/ja060982t
日期:2006.5.1
Polymetallic nanodimensional assemblies have been prepared via metal directed assembly of dithiocarbamate functionalized cavitand structural frameworks with late transition metals (Ni, Pd, Cu, Au, Zn, and Cd). The coordination geometry about the metal centers is shown to dictate the architecture adopted. X-ray crystallographic studies confirm that squareplanar coordination geometries result in "cagelike"
Novel Resorcinarene Cavitand-Based CMP(O) Cation Ligands: Synthesis and Extraction Properties
作者:Harold Boerrigter、Willem Verboom、David N. Reinhoudt
DOI:10.1021/jo9703414
日期:1997.10.1
complexation with Eu(picrate)(3) (K(ex)(1) = 2.7 x 10(12) M(-)(4)). The steric preorganization of the four CMP(O) moieties on the resorcinarene cavitand improves the efficiency and selectivity [of Eu(III) over UO(2)(II) and Fe(III)] of the metal extraction processes, compared to simple CMP(O) extractants.
从四(溴甲基)cavitand 3开始合成了四官能化的间苯二芳基cavitands(4-6)。新的基于cavitand的阳离子配体具有(氨基甲酰基甲基)膦酸酯(CMP)和-膦氧化物(CMPO)部分(8a,b和9a,b) )是通过两条不同的路线制备的,总收率良好(45-86%)。配体(8a,b和9b)是非常有效的euro提取剂。Ph(2)CMPON(Pr)-cavitand 8b具有最高的提取常数,通过放射性示踪剂实验确定,与Eu(苦味酸)(3)1:1络合(K(ex)(1)= 2.7 x 10(12)) M(-)(4))。与简单的CMP相比,间苯二甲烯空洞上的四个CMP(O)部分的空间预组织可提高[Eu(III)对UO(2)(II)和Fe(III)的效率和选择性] (O)萃取剂。