Hexa-arm star shaped hydrazone derivatives from hexakis(4-formylphenoxy)-cyclotriphosphazene core

Synthesis and Straightforward Quantification Methods of Imino Nitroxide-Based Hexaradical Architecture on a Cyclotriphosphazene Scaffold

“…The P−N and P−O distances as well as the P−N−P and N−P−N angles are in accord with the previous structure of this type. 24 The same results were observed for the C−O distance between the first carbon atom of each phenyl ring and the O atom attached to the P atom of the cyclophosphazene ring. Different data were collected from many crystals obtained from different synthetic batches to determine the structure accurately.…”

“…Meaningful bond distances and angles for 1 are reported in Tables and , respectively. The P–N and P–O distances as well as the P–N–P and N–P–N angles are in accord with the previous structure of this type . The same results were observed for the C–O distance between the first carbon atom of each phenyl ring and the O atom attached to the P atom of the cyclophosphazene ring.…”

Crystal structure of hexamethyl 4,4′,4′′,4′′′,4′′′',4′′′''-[(1,3,5,2λ5,4λ5,6λ5-triazatriphosphinine-2,2,4,4,6,6-hexayl)hexakis(oxy)]hexabenzoate

“…Three of the six 4-methoxycarbonylphenoxy substituents are on one side of the phosphazene ring, while the other three groups are located on the opposite side. The central phosphazene ring is slightly nonplanar, having a boat distortion, with atoms P1 and N2 lying 0.1223 (7) and 0.138 (2) Å , respectively, on the same side of the plane defined by atoms N1/N3/P2/P3, in agreement ISSN 2056-9890 with the values reported in the literature for hexakis(4formylphenoxy)cyclotriphosphazene (Patil et al, 2011).…”

“…In the past few decades, a rich variety of cyclotriphosphazenes with interesting properties and applications have been synthesized by replacing the Cl atoms of hexachlorocyclotriphosphazene with various nucleophiles. The properties of cyclotriphosphazenes depend on the inorganic skeleton, as well as on the nature of the substituents attached to the P atoms (Patil et al, 2011). Hexakis(allyl 4-hydroxybenzoate)cyclotriphosphazene (HABC) possessing six reactive peripheral allyl groups is used as a functional phosphazenebased oligomer for the synthesis of optical resin, through radical homopolymerization of itself and copolymerization with methyl methacrylate (Guo et al, 2009).…”

Cyclotriphosphazene, a scaffold for 19 F MRI contrast agents

“…The P-N (from 1.574(4) Å to 1.585(4) Å) and P-O (from 1.569(3) Å) to 1.580(3) Å) bond lengths are in good agreement with the previous structure of this type of cyclotriphosphazene, as well as the P−N−P (122.7(3)°) and N−P−N (117.2(2)° and (118.2(3°) angles. [10][11] All lengths for C-O bonds (from 1.450(5) Å to 1.460(6) Å) involving the first C atom of the phenyl ring and the O atom attached to the P atom of the cyclotriphosphazene ring are in the normal ranges. The 3-D network of 1 is built from C-F … F-C interactions between neighboring molecules and lead to planes perpendicular to the [100] direction of the unit-cell (Fig.…”