Related Experiment Video
Updated: Mar 2, 2026
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Crystal structure and Hirshfeld surface analysis of the new cyclo-diphosphazane [EtNP(S)NMe2]2
Chokri Issaoui1, Hammouda Chebbi1,2, Khaled Alouani3
1University of Tunis El Manar, Faculty of Sciences of Tunis, Laboratory of Materials, Crystal Chemistry and Applied Thermodynamics, 2092 El Manar II,Tunis, Tunisia.
Abstract:
The cyclic compound 2,4-bis(dimethylamino)-1,3-diethylcyclodiphosphazane-2,4-dithione [systematic name: 2,4-bis(dimethylamino)-1,3-diethyl-1,3,2λ5,4λ5-diazadiphosphetidine-2,4-dithione], C8H22N4P2S2 or [EtNP(S)NMe2]2, is member of a class of mol-ecules that may be used, by virtue of their complexation properties, for the extraction of metals. This compound was characterized in solution by (1H and 31P) NMR, and in the solid state by energy-dispersive X-ray spectroscopy (EDX) and by X-ray crystallography. In the crystal, the mol-ecule sits on an inversion centre such that the P and N atoms form a centrosymmetric cyclic P2N2 arrangement. The crystal packing is dominated by van der Waals inter-actions. The prevalence of these inter-actions is illustrated by an analysis of the three-dimensional Hirshfeld surface (HS) and by two-dimensional fingerprint plots (FP). The relative contribution of different inter-actions to the HS indicates that the H⋯H contacts account for 74.3% of the total HS area.
More Related Videos
08:15Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups
Published on: February 11, 2012
08:18Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
Published on: March 4, 2021
Related Concept Videos
01:18Aromatic Hydrocarbon Cations: Structural Overview
Removing one hydrogen from the intervening CH2 group...
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
03:35Hybridization of Atomic Orbitals II
02:27Predicting Molecular Geometry
02:11Conformations of Cyclohexane
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal...
02:30Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...