Issue 18, 2009
From the journal:

Dalton Transactions

Porous 2D coordination polymeric formate built up by Mn(ii) linking of Fe3O units: influence of guest molecules on magnetic properties†

Anton S. Lytvynenko,a   Sergey V. Kolotilov,ab   Olivier Cador,b   Konstantin S. Gavrilenko,a   Stéphane Golhen,b   Lahcène Ouahab*b  and  Vitaly V. Pavlishchuk*a  

* Corresponding authors

a L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of the Ukraine, Prospekt Nauki 31, Kiev, Ukraine
E-mail: shchuk@inphyschem-nas.kiev.ua
Fax: +38 (0)44 525 62 16
Tel: +38 (0)44 525 42 28

b Equipe Organométalliques et Matériaux Moléculaires, Sciences Chimiques de Rennes, UMR UR1-CNRS 6226, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes cedex, France
E-mail: lahcene.ouahab@univ-rennes1.fr
Fax: +33 (0)2 23 23 68 40
Tel: +33 (0)2 23 23 56 59

Abstract

A first representative of coordination polymers, built from polynuclear carboxylate bridged by mononuclear carboxylate, has been synthesised and structurally characterized. The compound [{Fe3O(HCOO)6}{Mn(HCOO)3(H2O)3}]·3.5HCOOH crystallised in the hexagonal system (space groupP63), a = b = 12.369(5) Å, c = 12.992(5) Å, α = β = 90°, γ = 120°, V = 1721.4(12) Å3. The crystal structure is built from 2D layers, which are formed by the linking of trinuclear {Fe3O(HCOO)6}+ units by mononuclear {Mn(HCOO)3(H2O)3}− bridges. These 2D honeycomb layers are connected by molecules of formic acid through a hydrogen bond network. The compound has the voids at the centre of the hexagons. These voids are filled by captured solvent molecules. Solvate molecules are also located between the 2D layers, linking them through a system of H-bonds. All these solvates can be easily removed and/or exchanged, which results in the formation of [{Fe3O(HCOO)6}{Mn(HCOO)3(H2O)3}]·0.5HCOOH·H2O and [{Fe3O(HCOO)6}{Mn(HCOO)3(H2O)3}]. Magnetic properties of the compounds can be considered as the superposition of magnetism of Fe3O trinuclear units, for which magnetism is governed by the superexchange interaction between Fe3+ spins (with one Fe–Fe superexchange parameter J) and the magnetism of spins of Mn2+ ions, the interactions between these units can be taken into account by molecular field, zJ′. The destruction of the hydrogen bond network caused by evacuation of solvent molecules significantly modifies the overall magnetism. It was found that zJ′ depends on the presence of solvent molecules in the structure.

Graphical abstract: Porous 2D coordination polymeric formate built up by Mn(ii) linking of Fe3O units: influence of guest molecules on magnetic properties

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/B900359B
Article type
Paper
Submitted
08 Jan 2009
Accepted
20 Feb 2009
First published
26 Mar 2009

Dalton Trans., 2009, 3503-3509

Permissions

Request permissions

Porous 2D coordination polymeric formate built up by Mn(II) linking of Fe3O units: influence of guest molecules on magnetic properties

A. S. Lytvynenko, S. V. Kolotilov, O. Cador, K. S. Gavrilenko, S. Golhen, L. Ouahab and V. V. Pavlishchuk, Dalton Trans., 2009, 3503 DOI: 10.1039/B900359B

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.

Social activity

Spotlight

Advertisements