Crystallization of Nano-Sized Macromolecules by the Example of Hexakis-[4-{(N-Allylimino)methyl}phenoxy]cyclotriphosphazene

Abstract

The synthesized compound was characterized by 31P, 13C, and 1H NMR spectroscopy and MALDI-TOF mass spectroscopy. According to DSC data, the compound was initially crystalline, but the crystal structure was defective. The crystals suitable for X-ray diffraction study were prepared by slow precipitation of the compound from a solution by a vapor of another solvent. A study of the single crystal obtained in this way demonstrated that the phosphazene ring has a flattened chair conformation. It was found that the sphere circumscribed around the compound molecule has a diameter of 2.382 nm.

Extraction of Palladium(II) with a Magnetic Sorbent Based on Polyvinyl Alcohol Gel, Metallic Iron, and an Environmentally Friendly Polydentate Phosphazene-Containing Extractant

“…Hexakis-[4-{(N-allylimino)methyl}-phenoxy]-cyclotriphosphazene (APP) was synthesized according to the procedure described in [ 37 ].…”

Cyclo- and Polyphosphazenes for Biomedical Applications

“…Cyclotriphosphazenes feature a nearly planar ring structure that provides a rigid D 3h symmetrical support for the six P-bonded substituents arranged on opposite sides with respect to the plane of the N=P cycle and outside, as shown in Figure 4 [ 17 ].…”

“…Cyclophosphazenes have been proposed as hydraulic fluids, lubricant stabilizers and additives, in particular with trifluoromethylphenoxy substituents [ 3 ], as substrates for supramolecular assemblies [ 13 , 14 , 15 ], and as supports for metal catalysts, either through metal coordination by the nitrogen atoms of the backbone or through the presence of ligands as substituents [ 11 , 16 , 17 ].…”

Phosphorus–nitrogen compounds: part 70. Syntheses of tetraaminomono/bis(4-fluorobenzyl)spiro(N/N)cyclotriphosphazenes: structural characterization, Hirshfeld surface analysis and comparative evaluation of esterase activities of hCA I and hCA II isoenzymes

“…In this way, a great deal of application and usage fields of the newly obtained cyclophosphazenes occur; e.g. as second-order nonlinear optics, 8 biomaterials, 9 organic field effect transistors (OFETs), 10 nanomaterials, 11 fluorescent receptors 12 and chemosensors, 13 ionic liquids, 14 biosensors, 15 protic molten salts, 16 dye-sensitized solar cells, 17 organometallic catalysts 18 and anticancer, antituberculosis, antifungal and antibacterial agents. 19,20…”