2,4,4,6,6-Pentachloro-2-(2,6-di-tert-butyl-4-methylphenoxy)cyclo-2λ⁵,4λ⁵,6λ⁵-triphosphazatriene

Fluorenylidene bridged cyclotriphosphazenes: ‘turn-off’ fluorescence probe for Cu2+ and Fe3+ ions

“…In both structures, all the cyclotriphosphazene rings have a slightly twisted planar conformation. The bond lengths and bond angles of the cyclotriphosphazene rings are found to be in the normal range, which were previously reported for similar mono-substituted 17,18 and mono-bridged [19][20][21][22] cyclotriphosphazene derivatives (Table S3 †).…”

Synthesis and spectroscopic properties of geminal-bis(tertbutylamino) phosphazenes obtained by the reaction of spiro and ansa phenoxyphosphazenes with the tert-butylamine and the crystal structure of 2,2-[2,2’-metheylenebis(4-chlorophenoxy)]-4,4-bis(tert-butylamino)-6,6-dichlorocyclo- 2λ5,4λ5,6λ5-triphosphazatriene

“…The reactions of trimeric phosphazene (N 3 P 3 Cl 6 ) with primary and secondary amines, diamines, polyamines 1-4 and aryloxides [5][6][7][8][9][10][11][12][13][14] under different conditions have been studied. The phenoxy derivatives of trimeric phosphazene (N 3 P 3 Cl 6 ) and tetrameric phosphazene (N 4 P 4 Cl 8 ) were used in the synthesis of new, small-molecule organocyclophosphazenes.…”

“…Synthesis of 2,4',4',6',6',10-hexachloro-4',4',6',6'-tetrahydrospiro[12H-dibenzo[d,g]- [1,3,2]dioxaphosphocin-6,2'λ 5 - [1,3,5,2,4,6]triazaphosphorine] (spiro) (1) and 2,6,8,8,10,14-hexachloro-8,8- [1,7,3,5,2,4,6]-dioxadiazatriphosphacyclododecine (ansa) (2) Compounds (1) and (2) (3) tert-Butylamine (0.670 g; 9.20×10 -3 mol) in dry THF (50 mL) was added drop wise to a stirred solution of compound 1 (0.50 g; 9.2×10 -4 mol) in dry THF (150 mL) at -20 °C over 1 h, with argon flowing over the reaction mixture. Then the mixture was allowed to come to ambient temperature, boiled under reflux (24 h) using a condenser fitted with a CaCl 2 drying tube.…”

“…The crude product was left to dry under vacuo and chromatographed (silica gel, 60 g, eluent; CHCl 3 /n-hexane, 3:1) to give compound 3. Then, it was recrystallized from CHCl 3 /petroleum ether (50:70) by the slow diffusion method whereby a white solid formed, yield 0.182 g. [1,7,3,5,2,4,6]-dioxadiazatriphosphacyclododecine (ansa) (4) tert-Butylamine (0.61 g; 8.30×10 -3 mol) in dry THF (50 mL) was added drop wise to a stirred solution of compound 2 (0.45 g; 8.30×10 -4 mol) in dry THF (150 mL) at -20 °C for over 1 h, with argon flowing over the reaction mixture. Compound 4 was prepared and purified as compound 3, white solid, yield 0.153 g.…”

Crystal Structure of 2,4,4,6,6-Pentachloro-2-(2,4,6-trimethylphenoxy)cyclo-2λ5,4λ5,6λ5-triphosphazatriene

“…2 The residue was dissolved in hexane and set aside for crystallization. The results of an X-ray structure determination are given in Tables 1 -3.…”