Results 231 to 240 of about 15,838,839 (288)

Phospha-S-triazines. VIII. Chloro-substituted diphospha-S-triazines

Journal of Fluorine Chemistry, 1985
Abstract 1,3-Bis(phenylchlorophospha)-5-perfluoroalkyl-2,4,6- triazine and the corresponding perfluoroalkylether analogue were synthesized by interaction of equimolar amounts of the respective amidines and imido-diphenyl-diphosphinic acid pentachloride.
K.J.L. Paciorek, D.H. Harris, M.E. Smythe, J.H. Nakahara, R.H. Kratzer   +4 more
  +5 more sources

The vibrational spectra of s-triazine and s-triazine-d3

Spectrochimica Acta, 1961
Abstract The infrared and Raman spectra of s-triazine and s-triazine-d3 have been taken and an assignment of the fundamental vibrational modes has been made. Nearly all the remaining observed bands are accounted for as combinations or overtones. A simple valence force field normal co-ordinate analysis was made, and the values of some force constants ...
J.E. Lancaster, R.F. Stamm, N.B. Colthup
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S-triazine residues in groundwater

Chemosphere, 1997
In the last years, the occurrence of pesticides and other chemicals in groundwater has been confirmed. The herbicide atrazine is among the pesticides most frequently detected in groundwater. In groundwater samples from the United States atrazine concentrations reached levels up to 10 micrograms/1.
U, Dörfler, E A, Feicht, I, Scheunert
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Phospa-s-triazines. X. Thiophenyl-substituted phospha-s-triazines

Journal of Fluorine Chemistry, 1985
Abstract A series of thiophenyl-substituted mono- and diphosphas-triazines was prepared. These materials exhibited physical characteristics similar to those of the corresponding phenyl analogues, but the mass spectral breakdown patterns were dominated by the loss of the thiophenyl group and differed signficantly from that of the other phospha-s ...
K.J.L. Paciorek, D.H. Harris, J.H. Nakahara, M.E. Smythe, R.H. Kratzer   +4 more
openaire   +1 more source

Vibrational spectra of s-triazine and its halogenated derivatives. Harmonic scaled ab initio force fields for s-triazine, trifluoro-s-triazine and trichloro-s-triazine

Journal of Molecular Structure, 1996
The vibrational spectra of s-triazine, trifluoro-s-triazine and trichloro-s-triazinc were calculated by using the 3-21G basis set and the program system GAUSSIAN 90. The ab initio force fields were scaled to try to reproduce the best values assigned for experimental frequencies for the above-mentioned molecules. The transferability of the scale factors
A. Navarro, J.J.López González, M.Fernández Gómez, F. Márquez, J.C. Otero   +4 more
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Phospha-s-triazines. VII. Phenyl-bridged phospha-s-triazines

Journal of Fluorine Chemistry, 1983
Abstract 1,4-Bis (phenyltrichlorophosphino)benzene was synthesized by a 4-step process in an overall 58% yield. Interaction of the bis(trichlorophosphorane) with the appropriate imidoylamidines afforded the novel 1,4-bis[1-phenylphospha-3,5-bis(perfluoro-n-heptyl)-2,4,6-triazino]benzene and 1,4-bis[1-phenylphospha-3,5-bis(perfluoroalkylether)-2,4,6 ...
K.J.L. Paciorek, T.I. Ito, J.H. Nakahara, D.H. Harris, R.H. Kratzer   +4 more
openaire   +1 more source

Capillary gas chromatography of s-triazines

Journal of Chromatography A, 1977
In order to achieve better resolution and lower detection limits for s-triazines, glass capillary columns made of soft soda-lime glass and etched with gaseous hydrogen chloride have been introduced. Columns with non-polar (OV-101, SE-30) mixed (Carbowax 20M + SE-30) and polar stationary liquids (Carbowax 20M) were used.
E, Matisová, J, Krupcik
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s-Triazines. Part I. Synthesis and reactions of dihalogeno-heteroaryl-s-triazines

Journal of the Chemical Society, Perkin Transactions 1, 1973
Metallated derivatives of substituted or unsubstituted furans, thiophens, and pyrroles react with 2,4,6-trichloro-s-triazine (cyanuric chloride) to produce the corresponding 2,4-dichloro-6-(heteroaryl)-s-triazines. The effect of electrophilic substitution (nitration and bromination) on such ring systems is described.
Jiban K. Chakrabarti, Ronald W. Goulding, Alec Todd   +2 more
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ChemInform Abstract: S‐TRIAZINES PART 3, SYNTHESIS OF DIHALOGENOHETEROARYL‐S‐TRIAZINES, REACTION OF 2,4,6‐TRICHLORO‐S‐TRIAZINE WITH PYRROLE, THIOPHENE, AND FURAN

Chemischer Informationsdienst, 1974
AbstractAus Cyanurchlorid (I) und verschiedenen Pyrrol‐, Thiophen‐ oder Furan‐Derivaten (II) entstehen die Monosubstitutionsprodukte (III), die z.Tl. einer nachträglichen Modifizierung unterworfen werden.
J. K. CHAKRABARTI, D. E. TUPPER
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Microbial degradation of s-triazine herbicides

1970
Biodegradation is a significant factor affecting the residual life and toxicity of many pesticides1 in soils. Soil microorganisms may act upon a pesticide in several ways. One mechanism may involve degradation with ultimate detoxication and/or metabolism of the pesticide, whereas another mechanism may involve the activation or toxication of an ...
D D, Kaufman, P C, Kearney
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