Trimethylantimony

Trimethylantimony Nickel-titanium Ethyidi methyl phosphine ... 

Due to the thermal instabilities of SbH3, MeSbH2, and Me2SbH, trimethylantimony (Me3Sb) is the conventional precursor used to grow antimony-containing materials.154,155 In order to reduce the pyrolysis temperature a number of other antimony alkyl compounds have also been investigated and are listed in Table 9. 

Triethylantimony, 2574 Triethylgallium, 2563 Triethylindium, 2564 Trimethylaliuninium, 1291 Trimethylantimony, 1320 Trimethylbismuthine, 1298 Trimethylgallium, 1305... 

Bis(methylcyclopentadienyl)peroxoniobium chloride, 3522 Bis(triethyltin) peroxide, 3581 Dicyclopentadienylperoxyniobium chloride, 3271 Diethylhydroxytin hydroperoxide, 1763 Di(hydroperoxy)trimethylantimony(V), 1333... 

Trimethylamine, ACl6 Trimethylammonium chloride, AC21 Trlmethylani1inium chloride, AQOO Trimethylantimony dichloride,... 

Trimethylsilylprop-2-enyl trifluoromethanesulfonate, 2843 3-Trimethylsilyl-2-propyn-1 -ol, 2489b iV-Trimethylsilyl-iV-trimethylsilyloxyacetoacetamide, 3369 Trimethylstibine, see Trimethylantimony, 1316 Trimethylsulfonium chloride, 1299 Trimethylsulfoxonium bromide, 1295 Trimethylthallium, 1317 f 2,4,6-Trimethyltrioxane, 2509 Trinitroacetonitrile, 1005... 

Triethylantimony, 2569 Triethylgallium, 2558 Triethylindium, 2559 Trimethylaluminium, 1287 Trimethylantimony, 1316 Trimethylbismuthine, 1294 Trimethylgallium, 1301... 

Initial rate measurements of the system trimethylantimony vs antimony trichloride indicate the following first-step reaction to be first order in each component ... 

Exchange of antimony-carbon bonds with antimony-halogen bonds in triphenylantimony and antimony trichloride upon heating at 250° C for 75 hours has been utilized for the preparation of phenylantimony chlorides (108,109). Also exchange of vinyl groups with chlorine atoms on antimony has been observed (155). Recently, however, a quantitative study of the kinetics of the reaction between trimethylantimony and antimony trichloride has been reported (298), details of which have been discussed in Section IV, A,1. 

Koch, I., Feldmann, J., Lintschinger, J. et al. (1998) Demethylation of trimethylantimony species in aqueous solution during analysis by hydride generation/gas chromatography with AAS and ICPMS detection. Appl. Organomet. Chem., 12, 129-136. 

The difference in stability between compounds XII and XIII may be attributed to a less reactive Sb—S bond in XIII. This is consistent with the fact that trimethylantimony bis (thiocarboxylates) is thermally more stable than the bis(thioalkoxides) 33, 34). 

Triorganoantimony(V) carboxylates are monomeric. Pyrolysis of trimethylantimony bis phenylbromoacetate in xylene yields trimethylantimony(V) bromide and mandelic acid polyester325. However, the pyrolysis of triphenylantimony(V) acetate proceeds via a radical reaction and yields triphenylantimony and acetic acid333. Trimethylantimony bis thio benzoate, on the other hand, appears to dissociate reversibly as shown below334 ... 

The reaction of trimethylantimony sulfide with acyl halide proceeds via a four centered intermediate yielding halo trimethylantimony thiocarboxylates335 ... 

Table 3. Mossbauer parameters of some trimethylantimony(V) carboxylates3381...

Kawasaki et al.387,390 have reported the rate constant and activation parameters Ea, AH, AS and AG by H NMR line broadening techniques for the ligand exchange reactions in trimethylantimony(V) and methylphenylantimony(V) oxinates. 

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