Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1492667 | Materials Research Bulletin | 2006 | 11 Pages |
Abstract
The monoclinic crystal structure of (C9H15N3O2)2P2O7·H2O denoted DLTHDP [a = 14.626(1), b = 6.1990(2), c = 14.562(1) Ã
, β = 97.289(3)°, Z = 2, monoclinic P21, Dcal = 1.508, Dmes = 1.49 g cmâ3] has been solved using direct methods and refined to a reliability factor R = 4.37% for 2079 independent reflections. The DLTHDP structure can be described by infinite polyanions [P2O7·H2O]n4nâ organized in chains parallel to the b-direction and located at z = 1/2, alternating with organic cations associated in ribbons spreading along the a-direction. Multiple hydrogen bonds originating from amine, hydroxyl groups and water molecules donors [NHâ¦O(N) and O(W)Hâ¦O] connect the different components of the lattice. The IR data of DLTHDP is reported and discussed according to the theoretical group analysis and by comparison with IR results of similar compounds. The coupled thermogravimetric analysis (TGA)-differential thermal analysis (DTA) thermal study shows the departure of one water molecule, confirming the hydrated character of this compound.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A. Gharbi, T. Guerfel, A. Jouini,