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E-Journal of Chemistry
Volume 9, Issue 4, Pages 2029-2036

Structural and Electrical Conductivity Properties of a Newly Synthesized 3-Methoxybenzylammonium Cation Diphosphate

1Laboratoire de Chimie des Matériaux, Faculté des Sciences 7021 Zarzouna, Bizerte, Tunisia
2Petrochemical Research Chair, College of Science, King Saud University, Riyadh, Saudi Arabia

Received 17 February 2011; Accepted 10 April 2011

Copyright © 2012 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The structure of the newly synthesized material, [3-(CH3O)C6H4CH2NH3]2H2P2O7 can be described as inorganic layers (H2P2O72-)n stacked perpendicular to the c-axis at z = 0 and z = 1/2 interleaved with organic cations [3-(CH3O)C6H4CH2NH3]+. The connection of the independent entities are assured by a set of N—H…O and C—H…O H-bonds in addition to electrostatic and Van der Waals interactions, generating a non-centrosymetric three-dimensional network. On the basis of electrical conductivity measurements, it was found that, at higher temperature conductivity increases linearly, showing medium conducting behaviour of the organic diphosphate salt with values lying in the range of σ= 0.69 10−4 Ω−1cm−1 at 328 K to 2.66 10−4 Ω−1cm−1 at 405 K and activation energy of Ea = 0.23 eV. Its characterization by IR absorption spectroscopy is described too.