Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 21st October 2020 from 07:00 AM to 07:00 PM (BST).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 29, 2007
Previous Article Next Article

α-TEPHOS: a cyclodextrin-derived tetraphosphine for multiple metal binding§

Author affiliations

Abstract

The tetraphosphine 6A,6B,6D,6E-tetradeoxy-6A,6B,6D,6E-tetra(diphenylphosphinyl)-2A,2B,2C,2D,2E,2F,3A,3B,3C,3D,3E,3F,6C,6F-tetradeca-O-methyl-α-cyclodextrin (α-TEPHOS) has been prepared in high yield by reacting 6A,6B,6D,6E-tetra-O-methylsulfonyl-2A,2B,2C,2D, 2E,2F,3A,3B,3C,3D,3E,3F,6C,6F-tetradeca-O-methyl-α-cyclodextrin with excess PPh2Li. The product was purified in its BH3-protected form. α-TEPHOS is the first optically active tetraphosphine in which the four phosphine units are tethered to a cavity-shaped scaffold. When reacted with [AuCl(tetrahydrothiophene)], α-TEPHOS led to the corresponding tetragold complex [(α-TEPHOS)(AuCl)4] in which the four gold atoms are all located close to the primary face of the cyclodextrin. Reaction with [PdCl(o-C6H4CH2NMe2)]2 gave the C2-symmetrical complex [(α-TEPHOS){PdCl(o-C6H4CH2NMe2)}4]. Treatment of the ligand with two equiv. of [Rh(norbornadiene)(tetrahydrofuran)2]BF4 afforded selectively the bimetallic complex [(α-TEPHOS){Rh(norbornadiene)}2](BF4)2 in which each metal centre is coordinated to two phosphorus atoms belonging to adjacent glucose units.

Graphical abstract: α-TEPHOS: a cyclodextrin-derived tetraphosphine for multiple metal binding

Back to tab navigation

Supplementary files

Article information


Submitted
05 Feb 2007
Accepted
03 May 2007
First published
24 May 2007

Dalton Trans., 2007, 3195-3202
Article type
Paper

α-TEPHOS: a cyclodextrin-derived tetraphosphine for multiple metal binding

L. Poorters, D. Armspach, D. Matt and L. Toupet, Dalton Trans., 2007, 3195
DOI: 10.1039/B701684K

Social activity

Search articles by author

Spotlight

Advertisements