Issue 6, 2010

Four nodal self-catenated [{Ni8(Bpy)16}V24O68]·8.5(H2O), combining three dimensional metal–organic and inorganic frameworks

Abstract

The chiral three dimensional crystal structure of [{Ni8(Bpy)16}V24O68]·8.5(H2O) is the first example of a hybrid vanadate combining a three dimensional metal–organic subnet with a three dimensional inorganic framework. The metal–organic framework consists of 3D + 2D polycatenation of a 3D “cds” like net and two 2D “sql” layers. The vanadium oxide subunit is a complex chain constructed from V5O15 cycles linked through a single tetrahedron. The vanadate chains are located in the channels of the metal–organic framework, and corner linked to the nickel metal centres giving rise to an unprecedented four nodal self-catenated framework. Moreover, as far as we as concerned, this is the first vanadate in which the V5O15 cycles has been isolated in the solid state. The crystallization water molecules are partially encapsulated between the organic ligands and the inorganic framework. The loss of crystallization water molecules gives rise to a contraction of the 0.6% of the unit cell volume. The IR spectrum shows the characteristic bands of the vanadium oxide subunit, and the bpy ligand. The BET measurement gives rise to a type III profile, (3.7 cm2 g−1), suggesting weak adsorbate-adsorbent interactions. The thermal evolution of the magnetic susceptibility is attributed to the zero-field splitting for eight non interacting Ni(II) cations.

Graphical abstract: Four nodal self-catenated [{Ni8(Bpy)16}V24O68]·8.5(H2O), combining three dimensional metal–organic and inorganic frameworks

Supplementary files

Article information

Article type
Paper
Submitted
29 Jul 2009
Accepted
04 Jan 2010
First published
01 Feb 2010

CrystEngComm, 2010,12, 1880-1886

Four nodal self-catenated [{Ni8(Bpy)16}V24O68]·8.5(H2O), combining three dimensional metal–organic and inorganic frameworks

R. Fernández de Luis, M. K. Urtiaga, J. L. Mesa, A. T. Aguayo, T. Rojo and M. I. Arriortua, CrystEngComm, 2010, 12, 1880 DOI: 10.1039/B915539B

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