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Abstract:
A novel polyoxometalate (POM) Na2(H2en) 2{(VO)10[B14O30(OH) 2]2}{Mn4(C2O4) [B 2O4(OH)2]2}Mn(H2O) 2·(H3O)12(H2O)19 1 (en=ethylenediamine), which is a layer-like transition metal (TM) oxalate templated polyoxovanadium borate, has been synthesized under hydrothermal conditions and characterized by EPR, elemental analysis, thermal analysis, single crystal X-ray diffraction and 2D IR correlation spectroscopy studies, respectively. This compound crystallized in the triclinic space group P1̄ with a=14.3842(4)Å, b=14.6837(3)Å, c=15.8681(4)Å, α=64.48(1)°, β=64.68(1)°, γ=63.93(1)°, V=2596.80(11)Å3 and Z=2. The cluster anion with an open central cavity has a central band of ten edge-sharing VO5 square pyramids, which is capped top and bottom by two crown-like polyborate ligands of formula [B 14O30(OH)2]20-. There is a fragment of {Mn4(C2O4)[B2O 4(OH)2]2}2- fixed in the central cavity as a guest part. The cluster units are connected to form a two-dimensional (2D) framework by octahedral Mn(II) and Na+ sites. In addition, we first introduce the generalized 2D correlation spectroscopy to explore the POMs and obtain the dynamic information about structural changes of POMs. © 2005 Elsevier Inc. All rights reserved.
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Journal of Solid State Chemistry
ISSN: 0022-4596
Year: 2005
Issue: 11
Volume: 178
Page: 3563-3570
1 . 7 2 5
JCR@2005
3 . 2 0 0
JCR@2023
JCR Journal Grade:2
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SCOPUS Cited Count: 51
ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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