Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 2, 2012
Previous Article Next Article

Interplay between the structural and magnetic probes in the elucidation of the structure of a novel 2D layered [V4O4(OH)2(O2CC6H4CO2)4]·DMF

Author affiliations

Abstract

The title compound has been synthesized under solvothermal conditions by reacting vanadium(V) oxytriisopropoxide with terephthalic acid in N,N-dimethylformamide. A combination of synchrotron powder diffraction, infrared spectroscopy, scanning and transmission electron microscopy, and thermal and chemical analysis elucidated the chemical, structural and microstructural features of a new 2D layered inorganic–organic framework. Due to the low-crystallinity of the final material, its crystal structure has been solved from synchrotron X-ray powder diffraction data using a direct space global optimization technique and subsequent constraint Rietveld refinement. [V4O4(OH)2(O2CC6H4CO2)4]·DMF crystallizes in the monoclinic system (space groupP2/m (No. 10)); cell parameters: a = 20.923(4) Å, b = 5.963(4) Å, c = 20.425(1) Å, β = 123.70(6)°, V = 2120.1(9) Å3, Z = 2. The overall structure can be described as an array of parallel 2D layers running along [−101] direction, consisting of two types of vanadium oxidation states and coordination polyhedra: face-shared trigonal prisms (V4+) and distorted corner-shared square pyramids (V5+). Both configurations form independent parallel chains oriented along the 2-fold symmetry crystallographic b-axis mutually interlinked with terephthalate ligands in a monodentate mode perpendicular to it. The morphology of the compound exhibits long nanofibers, with the growth direction along the layered [−101] axis. The magnetic susceptibility measurements show that the magnetic properties of [V4O4(OH)2(O2CC6H4CO2)4]·DMF can be described by a linear antiferromagnetic chain model, with the isotropic exchange interaction of J = −75 K between the nearest V4+ neighbours of S = 1/2.

Graphical abstract: Interplay between the structural and magnetic probes in the elucidation of the structure of a novel 2D layered [V4O4(OH)2(O2CC6H4CO2)4]·DMF

Back to tab navigation

Supplementary files

Article information


Submitted
25 May 2011
Accepted
23 Sep 2011
First published
31 Oct 2011

Dalton Trans., 2012,41, 581-589
Article type
Paper

Interplay between the structural and magnetic probes in the elucidation of the structure of a novel 2D layered [V4O4(OH)2(O2CC6H4CO2)4]·DMF

I. Djerdj, S. D. Škapin, M. Čeh, Z. Jagličić, D. Pajić, B. Kozlevčar, B. Orel and Z. C. Orel, Dalton Trans., 2012, 41, 581
DOI: 10.1039/C1DT10985E

Social activity

Search articles by author

Spotlight

Advertisements