Bromine complex compounds

Thus, this first example of stereoselective radical reaction, initiated with the system based on Fe(CO)5, shows opportunities and prospects of using the metal complex initiators for obtaining the stereomerically pure adducts of bromine-containing compounds to vinyl monomers with chiral substituents. 

When sodium lignosulfonate or sulfur lignin are compounded, for instance, with iodine or bromine, complexes supposedly form (16-17). These systems are conductors with mixed ionic and electronic nature. Presumably they are charge transfer complexes, since the electronic conductivity predominates (18-19). These compounded materials form charge transfer structures (20). Water is supposed to introduce ionic conductivity to the system. Impurities affect conductivity, too (21). In any case, the main models of conductivity are probably based on the band model and/or the hopping model. 

Tellurium tetrabromide is amphoteric in fused arsenic tribromide, from which complex bromides such as [(Et)4N]2TeBr6 and ammine adducts such as TeBr4-2PhNMe2 have been obtained. Addition compounds with pyridine, tetramethylthiourea and piperazine have also been reported.38,39 Alkali metal Salts such as TeBr4-2CsCl and the full brominated complexes of the type M2TeBr6 and M2PoBrs are also known. 

Segraves EN, Shah RR, Segraves NL, Johnson TA, Whitman S, Sui JK, Kenyon VA, Cichewicz RH, Crews P, Holman TR (2004) Probing the Activity Differences of Simple and Complex Brominated Aryl Compounds Against 15-Soybean, 15-Human, and 12-Human Lipoxygenase. J Med Chem 47 4060... 

Emissions of lead from mobile sources differ significantly from stationary source emissions in that automotive lead is closely associated with bromine and chlorine co-added as scavengers. In general, two principal types of lead compounds have been identified in vehicular exhaust the normal lead halide PbClBr and binary complex compounds... 

Regeneration of C=0. The bromine complex of hexamethylenetetramine is useful for regeneration of carbonyl compounds from oximes and tosylhydrazones. 

The complexing agents used at Exxon are quaternary pyrrolidinium and morpholinium compounds. The bromine complex formed upon charge is a heavy insoluble oil which accumulates at the bottom of the catholyte reservoir (cf. Fig. 11) Complexing reduces the vapor pressure of bromine by one to two orders of magnitude, and the self-discharge rate, as well as corrosive bromine attack, are considerably diminished. 

Bromination. Bromine complexed to polymeric pyridine has been used to brominate aromatic compounds. 

Bromine(III) compounds, 317 [Br(OS02F)]2-, 320 Bromine fluorosulfate, 320 Bromine hexafluoroantimonate, difluoro-, 313 Bromine perchlorate, bis(quinoline)-, 319 Bromine tetrafiuoroborate, bis(quinuclidine)-, 319 Bromine trifluoride, 313, 314 Butane, rflc-p,p -diaminodiphcnyl-alkali metal complexes, 14... 

Diazabicyclo[2.2.2]octane-Bromine complex (Dabco-2Br2). Mol. wt. 431.84, m.p. 155-160° dec., yellow, stable to light, air, water. This complex is prepared by admixture of the two compounds in CCI4. It is very slightly soluble in a variety of solvents however, in the presence of excess amine, solutions in CH3CN or CH2CI2 can be obtained. 

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