Antimonate , hexachloro

The development of mass spectrometric ionization methods at atmospheric pressures (API), such as the atmospheric pressure chemical ionization (APCI)99 and the electrospray ionization mass spectrometry (ESI-MS)100 has made it possible to study liquid-phase solutions by mass spectrometry. Electrospray ionization mass spectrometry coupled to a micro-reactor was used to investigate radical cation chain reaction is solution101. The tris (p-bromophenyl)aminium hexachloro antimonate mediated [2 + 2] cycloaddition of trans-anethole to give l,2-bis(4-methoxyphenyl)-3,4-dimethylcyclobutane was investigated and the transient intermediates 9 + and 10 + were detected and characterized directly in the reacting solution. However, steady state conditions are necessary for the detection of reactive intermediates and therefore it is crucial that the reaction must not be complete at the moment of electrospray ionization to be able to detect the intermediates. 

Preparations of 5-oxo-2,8-dihydro-577-dibenzo[, < ]thiocin 23 and the corresponding3 -methylthiocinium hexachloro-antimonate 6 have been described (Scheme 6) <2002J(P1)2704>. The methylthiocinium salt 6 has been employed in a [2,3]-sigmatropic shift reaction (Section 14.03.6). 

All salts of sodium, potassium, and ammonium are soluble except NaSb(OH),. (sodium antimonate), KoPtCl (potassium hexachloro-platinate), (NH4).,PtCl,p K3Co(NO.,),i (potassium cobaltinitrite), and (NH4),Co(N02),. ... 

Q6Nb2S3C6H,s, Niobium(III), di-p-chloro-tetrachIoro- jL-(dimethyI sulfide)-bis-(dimethyl sulhde)di-, 21 16 QjSb, Antimonate(l -), hexachloro- jL-nitrido-bis(trichIorophosphorus)(l +), 25 25... 

Tris(4-bromophenyl)ammoniumyl hexachloro antimonate is commercially available (e.g., Fluka product, 5g cost 70). It is commonly used as an oxidizing reagent by means of electron transfer and is elegantly applied to induce cycloadditions and cyclodimerization ([2 -I- 2] reactions) by Bauld [115]. However, aromatic amine radical cations as the oxidizing reagent can be easily obtained anodically [116] and their redox potentials (between -1-1 V and -1-2 V vs. NHE) modulated as a function of different substituents for utilization if indirect oxidation reactions are to be conducted. Therefore, such a redox catalysis process appears to be a cheap and elegant method to selectively achieved in situ oxidation, provided that polar solvents, electrolytes, and room temperatures are acceptable experimental conditions to perform a given reaction. 

Chlorodecarbomethoxylation, 480 Chlorodicarbonylrhodium(l) dimer, 108 Chlorodiphenylmethylium hexachloro-antimonate, 108-109 a-Chloroepoxy ketones, 354-355 Chlorofluorocyclopropanes, 511 Chlorofluorocarbene, 175, 511 /3-Chloroethyl isocyanate, 570 Chloroformates, 226 a-Chloroglycidic esters, 353 6-Chloro-N-hydroxybenzotriazole, 106... 

R HEXAKIS(ACETONE)COBALT(II) BIS(HEXACHLORO-ANTIMONATE(V)J, Co(CH3 COCH3 ] ISbCI I2... 

ENE REACTIONS Acetyl hexachloro-antimonate. Aluminum chloride, n-Butyllithium-Tetiamethylethylene-diamine. 

The 1,5-dichloro-substituted 2-azoniaallene salt 376 reacts as a trivalent electrophile with benzohydrazine 377, to furnish the bicyclic oxadiazinium salt 5-methylthio-2,7-diphenyl[l,2,4]triazolo[l,5-f][l,3,5]oxadiazinium hexachloro-antimonate S3, which represents a new ring system (Equation 54). Very little is known about these compounds however, the structure of the oxadiazinium salt is confirmed by X-ray analysis (see Section 9.09.3.2) <1995JPR274>. 

The patent states that photoinitiators composed of quinolinum salts (N-benzylquinolinium hexachloro-antimonate) and sulfonium salts like the one shown above show a maximum molecular extinction coefficient greater that 100 at 360 to 500 nm. ... 

The zwitterionic tetramethylene intermediate has been trapped with methanol as a linear 1-methoxybutane, indicating that the addition of tetracyanoethylene to NVK occurs in a stepwise manner. Once the zwitterions are formed, the course of the reaction is determined largely by experimental conditions. With excess NVK, cationic polymerization occurs. If the concentrations of NVK and tetracyanoethylene are comparable, collapse of the intermediate to the corresponding cyclobutane is favored. The cyclobutane formation is reversible, and the isolated cyclobutane alone is capable of initiating the cationic polymerization of NVK. The polymerization of NVK by the stable radical cation salts phenothiazin hexafluoroantimonate [464] and tris-p-bromophenylamminium hexachloro-antimonate [465] were shown to occur via charge transfer initiation too. 

Trisaccharides 11,293 suppl. 27 Tris-(p-bromophenyl)-ammoniumyl hexachloro-antimonate... 

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