A CATALYTIC DECOMPOSITION OF CERTAIN PHENOL SILVER SALTS. [FIRST PAPER.<sup>1</sup>]

Hunter, W. H.; Olson, A. O.; Daniels, E. A.

doi:10.1021/ja02266a012

Cited by 39 publications

(17 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…35,37q NQR spectra were obtained on a Decca superregenerative spectrometer using Zeeman modulation at 77 K, 195 K, and 273 K; for room-temperature searches for 63,65 Cu signals in the frequency range [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] MHz, a Wilks NQR-1A spectrometer was also employed.…”

Section: Methodsmentioning

confidence: 99%

“…We unsuccessfully attempted to grow crystalline silver(I) 2,4,6-trichlorophenolate by modifying the precipitation procedure of Hunter [19] to one of homogeneous precipitation. Hence to break up the polymeric structures and synthesize discrete molecular silver and copper(I) chlorophenolates, triphenylphosphine (Ph 3 P) and other phosphines, phosphites, and pyridine were included in the syntheses as co-ligands.…”

Section: Methodsmentioning

confidence: 99%

“…Two procedures were used to synthesize these compounds: (1) the amorphous silver (I) 2,4,6-trichlorophenolate of Hunter [19] was stirred with an ethereal solution of one or two moles of the ligand; (2) the phenol, the phosphine, and the metal oxide were heated in refluxing toluene until the metal oxide had dissolved: M 2 0 + 2 HOC 6 H 2 Cl 2 X + 4 Ph 3 P 2 (Ph 3 P) 2 MOC 6 H 2 Cl 2 X + H 2 0.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Coordination of Ortho-Chlorines in Copper (I) and Silver (I) 2,6-Di- and 2,4,6-Trichlorophenolates

Wulfsberg

Jackson

Ilsley

et al. 1992

Zeitschrift Für Naturforschung A

View full text Add to dashboard Cite

The crystal structure of (Ph 3 P) 2 AgOC 6 H 2 Cl 3 (I) is reported along with the syntheses and 35 C1 and 63 Cu NQR spectra of I and several related silver (I) and copper (I) 2,6-di-and 2,4,6-trichlorophenolates containing phosphines, phosphites, and pyridine as co-ligands. I crystallizes in space group P2 Jc with a= 16.692(4) Ä, b= 17.942 (4) A, c= 12.857 (3) Ä, /? = 97.60 (1)°, F = 3816.68 Ä 3 , and Z = 4. The final R (F) = 0.0475 and R (W) = 0.0396. Ag is coordinated in a trigonal planar geometry by the P atoms of the two triphenylphosphine ligands and the O atom of the chlorophenolate; Ag is then capped by one ortho-chlorine of the trichlorophenolate ligand at a distance of 3.160 (2) Ä. In the 35 C1 NQR spectrum of this compound the two orf/io-chlorines of the trichlorophenolate ligand have a large frequency difference of 1.500 MHz, indicating that one ortho-chlorine is coordinated to the silver; 35 C1 NQR spectra of related complexes are also presented and discussed. The 35 C1 NQR frequency differences of coordinated and non-coordinated orr/io-chlorines in metal chlorophenolates correlate well with the metal-chlorine distances but not with the metal-chlorine-carbon bond angles. A different correlation is found for the silver complexes of dichloroalkanes; possible reasons for this are discussed.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Coordination of Ortho-Chlorines in Copper (I) and Silver (I) 2,6-Di- and 2,4,6-Trichlorophenolates

Wulfsberg

Jackson

Ilsley

et al. 1992

Zeitschrift Für Naturforschung A

View full text Add to dashboard Cite

show abstract

“…Infrared spectra of the complexes and the polymers were recorded on a Mattson 1000 model FTIR spectrometer by dispersing the sample in KBr pellets. 1 H and 13 C-NMR spectra of samples were recorded by using a BRUCKER Instruments, Avance Series (DPX 400), 400 MHz High Performance Digital FT-NMR Spectrometer. Deuterated chloroform was used as the solvent and TMS as an internal reference.…”

Section: Instrumentationmentioning

confidence: 99%

Poly(dibromophenylene oxide)s Through Atom Transfer Radical Rearrangement Polymerization of Various Transition Metal Complexes

Çamurlu

Kisakürek

2009

Journal of Macromolecular Science, Part A

View full text Add to dashboard Cite

In this study, the synthesis of poly(dibromophenylene oxide)s were achieved via atom transfer radical rearrangement polymerization through decomposition of Bis(2,4,6-tribromophenolato)di(N-methyl imidazole)Cu(II)-Cu(TBP) 2 (NMIZ) 2 , Bis(2,4,6-tribromophenolato)di(N-methyl imidazole)Co(II)-Co(TBP) 2 (NMIZ) 2 , Bis(2,4,6-tribromophenolato)di(N-methyl imidazole)Ni(II)-Ni(TBP) 2 (NMIZ) 2 complexes. Polymerizations were carried out under two different conditions to investigate the effect of time and temperature on percent conversions, intrinsic viscosities. Characterizations of the polymers were performed by FTIR, DSC, 1 H-NMR, 13 C-NMR, SEM and viscometric measurements. The poly(dibromophenylene oxides)s, synthesized by the transition metal complexes, having nonchelating ligand N-methyl imidazole, displayed selectivity in the favor of 1-2 and 1-4 additions, taking place at equal rates irrespective of the type of the metal used. Among the synthesized polymers, the highest percent conversion and intrinsic viscosity was achieved by the decomposition of Cu(TBP) 2 (NMIZ) 2 complex, whereas, Ni(TBP) 2 (NMIZ) 2 yielded the lowest. Investigation of the complexes via mass spectroscopy and the thermal behavior of the by-products enlightened the underlying reasons of the variations at percent conversion and intrinsic viscosity values of the resultant polymeric products.

show abstract

“…Heating silver or copper trichlorophenolates produces poly(2,6-dichlorophenylene oxides) [2,3]; dioxin is not produced. Possibly Group 1 cation-ort/io-organochlorine interactions [4] may be involved in directing elimination of ortho-rather than para-chlorines when dioxins are formed.…”

Section: Introductionmentioning

confidence: 99%

Dioxin Precursors: NQR Studies of Group 1 and Related 2,6-Dichlorophenolate and 2,4,6-Trichlorophenolate Salts

Wulfsberg

Shadid

Farris

et al. 1992

Zeitschrift Für Naturforschung A

View full text Add to dashboard Cite

The 81 Br and 35 C1 NQR spectra of anhydrous Group 1, tetraalkylammonium, and thallium(I) 2,6-dichlorophenolates, 2,4,6-trichlorophenolates, and 4-bromo-2,6-dichlorophenolates were searched for evidence of solid-state cation-organochlorine interactions that might, for example, be (in part) responsible for the difference in the thermal decomposition reactions of these salts (to give the supertoxic environmental pollutants, the polychlorinated dibenzodioxins) versus those of the corresponding Group 11 chlorophenolate complexes, which do not decompose to dioxins.For cations ranging in size from tetraethylammonium to potassium, the total range of 35 C1 NQR frequencies in 2,6-dichlorophenolate and 2,4,6-trichlorophenolate salts is only 1.401 MHz, which, although larger than the 0.7 MHz range likely in molecular chlorocarbons, is smaller than in individual chlorophenolates of copper(I) and silver(I) (up to 2.0 MHz). In sodium and thallium(I) 2,4,6-trichlorophenolates substantially large frequency shifts (ca. 2.0 MHz) occur, to higher frequencies for the para-chlorines and lower frequencies for the ortho-chlorines (Na only). These disappear even in closely related compounds and show a pattern that seems unrelated to the decomposition products of the chlorophenolates.

show abstract

A CATALYTIC DECOMPOSITION OF CERTAIN PHENOL SILVER SALTS. [FIRST PAPER.¹]

Cited by 39 publications

References 0 publications

Coordination of Ortho-Chlorines in Copper (I) and Silver (I) 2,6-Di- and 2,4,6-Trichlorophenolates

Coordination of Ortho-Chlorines in Copper (I) and Silver (I) 2,6-Di- and 2,4,6-Trichlorophenolates

Poly(dibromophenylene oxide)s Through Atom Transfer Radical Rearrangement Polymerization of Various Transition Metal Complexes

Dioxin Precursors: NQR Studies of Group 1 and Related 2,6-Dichlorophenolate and 2,4,6-Trichlorophenolate Salts

Contact Info

Product

Resources

About

A CATALYTIC DECOMPOSITION OF CERTAIN PHENOL SILVER SALTS. [FIRST PAPER.1]

Cited by 39 publications

References 0 publications

Coordination of Ortho-Chlorines in Copper (I) and Silver (I) 2,6-Di- and 2,4,6-Trichlorophenolates

Coordination of Ortho-Chlorines in Copper (I) and Silver (I) 2,6-Di- and 2,4,6-Trichlorophenolates

Poly(dibromophenylene oxide)s Through Atom Transfer Radical Rearrangement Polymerization of Various Transition Metal Complexes

Dioxin Precursors: NQR Studies of Group 1 and Related 2,6-Dichlorophenolate and 2,4,6-Trichlorophenolate Salts

Contact Info

Product

Resources

About

A CATALYTIC DECOMPOSITION OF CERTAIN PHENOL SILVER SALTS. [FIRST PAPER.¹]