Issue 11, 2002

Strategies for the synthesis of porous metal phosphonate materials

Abstract

The use of bifunctional phosphonate anions and metal cations that can adopt different co-ordination environments is proposed as a strategy for synthesising porous metal phosphonates. The hydrothermal methods described use phosphonic acids and dialkylphosphonates, which are hydrolysed in situ by the acidic metal solutions, to derive the desired phosphonate anions. A series of isostructural hydroxymethylphosphonates, M(O3PCH2OH) [M = Zn, Co, Cu and Mn], which contain a hexagonal array of cylindrical channels (approximate diameter 5.7 Å), were prepared by reaction of the relevant metal acetate with diethyl hydroxymethylphosphonate. Zn(O3PCH2C(O)NH2)·H2O was prepared by reaction of zinc acetate and diethyl cyanomethylphosphonate. The structure was determined by single crystal X-ray diffraction and contains two orthogonal channel systems with water molecules situated at the intersections of the channels. Zn3(O3PCH2CO2)2·nH2O [n = 3, 4] was prepared by reaction of phosphonoacetic acid and zinc acetate. Single crystal analysis reveals the presence of channels in the [100] direction with a cross-section of 10.02 × 6.78 Å. All three of the Zn-based materials can be isomorphously doped with Co.

Graphical abstract: Strategies for the synthesis of porous metal phosphonate materials

Supplementary files

Article information

Article type
Paper
Submitted
29 Apr 2002
Accepted
18 Jun 2002
First published
03 Oct 2002

J. Mater. Chem., 2002,12, 3220-3227

Strategies for the synthesis of porous metal phosphonate materials

G. B. Hix, A. Turner, B. M. Kariuki, M. Tremayne and E. J. MacLean, J. Mater. Chem., 2002, 12, 3220 DOI: 10.1039/B204131F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements