Issue 40, 2013

Organic–inorganic hybrids based on monovacant Keggin-type polyoxotungstates and 3d–4f heterometals

Abstract

Four organic–inorganic hybrid monolacunary Keggin polyoxotungstate-based 3d–4f heterometallic derivatives [Cu(en)2(H2O)]2[Tb(α-HSiW11O39)(H2O)3]·12H2O (1), [Cu(en)2(H2O)]2[Eu(α-HGeW11O39) (H2O)3]·12H2O (2), Na2[Cu(en)2(H2O)]4[Sm(α-PW11O39)(CH3COO)(H2O)]2·10H2O (3) and [Cu(en)2 (H2O)]5[Cu(en)2][Tb(α-GeW11O39)(CH3COO)(H2O)]2·14H2O (4) (en = ethylenediamine) have been hydrothermally prepared and characterized by elemental analyses, IR spectra, thermogravimetric (TG) analyses and X-ray single-crystal diffraction. 1 and 2 are isomorphic and exhibit the interesting one-dimensional chain arrangements built by monovacant-lanthanide substituted Keggin-type [Ln(α-HXW11O39)(H2O)3]4− (Ln = TbIII, EuIII; X = SiIV, GeIV) units via W–O–Ln–O–W bridges whereas 3 and 4 display typical organic–inorganic hybrid dimeric structures consisting of [(α-XW11O39)Ln(H2O)(η2,μ-1,1)-CH3COO]210/12− units modified by [Cu(en)2(H2O)]2+ fragments. To the best of our knowledge, 1 and 2 represent the rare 1D chain-like monovacant Keggin-type 3d–4f heterometallic polyoxotungstates containing both unusual 1 : 1 [Ln(α-XW11O39)]4/5− units and en ligands, whereas 3 and 4 represent the first monovacant Keggin-type phosphotungstates or germanotungstates containing both 3d–4f heterometals and mixed ligands of en and acetate. Furthermore, the variable-temperature magnetic susceptibilities of 1 and 3 have been investigated.

Graphical abstract: Organic–inorganic hybrids based on monovacant Keggin-type polyoxotungstates and 3d–4f heterometals

Supplementary files

Article information

Article type
Paper
Submitted
04 Jun 2013
Accepted
04 Aug 2013
First published
06 Aug 2013

CrystEngComm, 2013,15, 8186-8194

Organic–inorganic hybrids based on monovacant Keggin-type polyoxotungstates and 3d–4f heterometals

H. Zhao, J. Zhao, B. Yang, H. He and G. Yang, CrystEngComm, 2013, 15, 8186 DOI: 10.1039/C3CE41007B

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