Results 231 to 240 of about 35,646 (266)

ChemInform Abstract: UNUSUAL DEPROTONATION OF PHOSPHONIUM SALTS. PHOSPHONIUM DYES

Chemischer Informationsdienst, 1976
Abstractγ‐Oxophosphoniumsalze (I) reagieren mit den Hydrazinen (II) zu den gelben Phosphoniumchloriden (III).
M. I. SHEVCHUK, I. V. MEGERA, A. F. TOLOCHKO, A. V. DOMBROVSKII   +3 more
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Cyclic phosphonium ylides

Journal of Heterocyclic Chemistry, 1972
AbstractSynthetic approaches to cyclic phosphonium ylides are reviewed and the syntheses are classified according to reaction type rather than ring size. Particular attention is paid to syntheses leading to isolable or easily characterizable cyclic ylides and a number of other reactions in which cyclic phosphonium ylides are postulated as transient ...
Maureen Davies, A. N. Hughes
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Conjugated phosphonium polyacetylenes

Polymer, 1997
Several substituted phosphonium phenylacetylene monomers and the corresponding polymers were prepared through quaternization of trimethyl (or phenyl) phosphines with phenylacetylene bromide and subsequent polymerization of quaternized monomers. A nitrogen analogue, poly(1-triethyl ammonium bromide 2-phenylacetylene) was prepared for comparison.
Peiguang Zhou, Alexandre Blumstein
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Ammonium phosphonium salts

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1984
Ammonium phosphonium salts are formed when tertiary phosphines are reacted with benzalaniline in the presence of dry HCl.
G. V. Romanov, A. A. Lapin, A. N. Pudovik   +2 more
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Phosphines and Phosphonium Salts

ChemInform, 1987
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Phosphonium cascade molecules

Journal of the Chemical Society, Chemical Communications, 1990
Cascade molecules have been synthesized in which the initiation core and branch points of the cascade structure are quaternary phosphonium ion sites.
Kasthuri Rengan, Robert Engel
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Tetrakis(chloromethyl)phosphonium chloride monohydrate

Acta Crystallographica Section C Crystal Structure Communications, 2002
Tetrakis(chloromethyl)phosphonium chloride monohydrate, C(4)H(8)Cl(4)P(+) x Cl(-) x H(2)O or P(CH(2)Cl)(4)(+) x Cl(-) x H(2)O, is the first crystal structure determination of a tetrakis(halogenomethyl)phosphonium compound to date. The only comparable structures known so far are of phosphonium ions containing just one halogenomethyl group.
Weisbarth, R., Jansen, M.
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Electrophilic phenoxy-substituted phosphonium cations

Dalton Transactions, 2016
A family of electrophilic phenoxy-substituted phosphonium salts [(RO)P(C6F5)3][B(C6F5)4] (R = C6H5, 4-FC6H4, 2,4-F2C6H3, C6F5) have been synthesized, used as Lewis acid catalysts and their air stability was evaluated.
James H W, LaFortune, Timothy C, Johnstone, Manuel, Pérez, Daniel, Winkelhaus, Vitali, Podgorny, Douglas W, Stephan   +5 more
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Phosphonium Acesulfamate Based Ionic Liquids.

ChemInform, 2005
AbstractWe present a new class of solvents containing nonfluorous, well‐established, nontoxic organoanions that can be used as “green” alternatives to volatile organic solvents in a variety of applications such as solvent extraction, antielectrostatic agents, and as electrolytes in solar‐cell applications.
Juliusz Pernak, Filip Stefaniak, Józef Węglewski   +2 more
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Vibrational Spectra and Structure of Phosphonium and Deutero-Phosphonium Iodides

The Journal of Chemical Physics, 1957
The infrared spectra of sublimed films of PH4I and PD4I were obtained at —78° and —190°C in the region 4000–400 cm—1. Powder and Nujol mull spectra were obtained at room temperature. The low temperature spectra could be interpreted on the basis of a Vd site symmetry for the PH4+ ion as occurs in the phase III NH4Br and NH4I structures.
J. V. Martinez, E. L. Wagner
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