Hexakis cyclotriphosphazene

Multi-armed polymers with a cyclotriphosphazene core XI and XII have been synthesized from the reaction of polyethylene glycol monomethyl ethers with acid chlorides of hexakis(3,5-dicarboxyphenoxy) and hexakis(4-carboxyphe-noxy) cyclotriphosphazenes. Their complexes with LiC104 were investigated, and their maximum conductivities are reported in Table 17 [621]. 

The first pyrrolylphosphazenes were apparently prepared by McBee and coworkers in 1960, and although the work was never documented in the chemical literature, hexakis-(pyrrolyl)cyclotriphosphazene (1) and octakis-(pyrrolyl)cyclotetraphosphazene were described in a Technical Report of the Defense Technical Information Center.19 Compound 1 was reported to be produced in 26% yield from the interaction of hexachlorocyclotriphosphazene [(NPC 2)3] with excess potassium pyrrolide in refluxing benzene over a 24 hour period. Lithium pyrrolide and pyrrolyl magnesium bromide were found to be unsatisfactory reagents for the preparation of 1. 

The pyrazole phosphazine ligand, hexakis(3,5-dimethylpyrazolyl)cyclotriphosphazene (16) forms a dizinc complex, that has been structurally characterized, and the analogous copper zinc complex.158 Two ZnCl2 units are coordinated, one distorted tetrahedral and one distorted trigonal-bipyramidal, separated by 7.51 A. Cu1 and ZnCl2 can also be coordinated giving a heteronuclear compound with a Zn Cu separation of 6.798 A. 

The reaction of the hexakis(cyclohexylamino)cyclotriphosphazene 136 with 3 equiv of antimony trichloride, in THF and in the presence of triethylamine, resulted in the formation of compound 137 (Equation 13). This compound was recrystallized from a mixture of THF and hexane and the crystal structure unambiguously assigned the structure <2005IC275>. The dimer, compound 138, was formed at room temperature from compound 139 and R3P (R = 7-Pr, Ph). Upon dissolution, compound 140 was formed <2002ZFA1903>. 

Interaction of hexakis(4-pyridylmethoxy)cyclotriphosphazene with silver al-kylsulfonates AgSOsCnHan+i (n = 12,14, 16, 18) has been reported to lead to a... 

Scheme55. The ATRP of MA and IBA initiated by 1,1,3,3,5,5-hexakis (4-bromomethylphe-noxy) cyclotriphosphazene to produce an inorganic-organic star block copolymer [232, 345]...

Hexakis(4-ter -butoxycarbonylphenoxy)cyclotriphosphazene was employed as a dissolution inhibitor of a novolac resin for a design of a three-component positive resist [183]. 

The synthesis and spectral characterization of the high-melting (>300°C) fully substituted reaction product of (NPCl2)3 and 2-[2-(2-hydroxyphe-nyl)quinoxalin-3-yl]phenol has been reported. New hexakis(/i-phenylazo-o-allylphenoxy)cyclotriphosphazenes with mono- or disubstituted phenyl groups... 

Phosphazene chemistry is covered separately elsewhere within this volume but three notable papers involving theoretical and computational chemistry methods have been reported. Non-empirical RHF/6-31G and MP2/6-31G quantum chemical methods have been used to calculate the molecular structure of two trichlorophosphazenes (8) and (9). The corresponding geometric parameters obtained from the calculations were compared with XRD analysis data previously reported in the literature. Conformational differences between the two molecules, previously found by XRD analysis of the crystals, were confirmed by non-empirical quantum chemical calculations on the molecules in the free state and the features of their geometry were discussed. A DFT study of the structural organization and infrared spectra of hexakis 4-iV -dichloro(thio)phosphonyl-A -methyl-dia-zobenzene cyclotriphosphazene, a phosphorus-containing dendrimer built... 

C12H36N9P3, Hexakis(dimethylamino)cyclotriphosphazene, 39B, 497 Cl2H3gPftSi6, Dodecamethylhexasilatetraphosphaadamantane, 44B, 618 C13H1oBrCl202PS, O-Methyl-0-(4-bromo-2,5-dichlorophenyljphenylphos-phonothioate, 46B, 668... 

C18H18N15P3, Hexakis imidazolyl)cyclotriphosphazene, 46B, 676 Cl8H21N2O3P, 3,4 Dimethyl 2,8-diphenyl 1,6-dioxa 4,9-diaza-5-phos-pha(V)-7-spiro[4.4]nonanone, 45B, 748 Cl8H21PS2 f 6-Phenyl-6-phospha-2,10-dithiabicyclo[9,4.0]pentadeca-I1(1),l2,14 triene, 46B, 694... 

A hexakis(pyrenyloxy)cyclotriphosphazene (59) was synthesized by a reaction of N3P3CI6 and 2-hydro>qqjyrene. This molecule is conformationally... 

Hydrolysis of hexakis-(2,2,2-trifluoroethoxy)cyclotriphosphazene in aqueous methanolic sodium hydroxide has been shown to proceed via non-geminal stepwise displacement of trifluoroethoxy groups from phosphorus... 

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