Antimony bond

Cyclic and Polymeric Substances Containing Antimony-Antimony Bonds. A number of oiganoantimony compounds containing rings of four, five, or six antimony atoms have been prepared. The first such compound to be adequately characterized, tetrakis-l,2,3,4-/f i-butyltetrastibetane [47191 -73-5], Cj H Sb, was obtained by the interaction of a dialkylstibide and iodine (70) ... 

Arsenic, Antimony and Bismuth Table 18 Sulfur-Antimony Bond Lengths and Angles... 

The antimony analogue of diars, o-phenylenebis(dimethylstibine), has been prepared, as has its phenyl analogue (equation 43).162 Attempts to prepare multidentate stibines have been unsuccessful, probably due to the weaknes of the carbon-antimony bond. For example, in the reaction of BunLi with o-C6H4(SbPh2)Br the nucleophile attacks the C—Sb as well as the C—Br bond.142... 

Recently, Meinema el al. (86) reported that an alkyl-antimony bond of R3Sb (R = alkyl) is also cleaved by sodium in liquid ammonia. 

It was also found that the phenyl-antimony bonds of (CH3) (C6H5)2Sb were cleaved selectively by dry hydrogen chloride in chloroform to give CH3SbCl2 (40). This cleavage reaction was successfully applied to the preparation of new ligands,11 bis(diorganostibino) methanes (41), as follows ... 

In the reaction of R(C6H5)2Sb (R = C2HS, f-C3H7, C6H5CH2), cleavage of the alkyl-antimony bond took place (38). 

Dimethyl ditellurium and tetramethyldistibane formed, within a few minutes at 20° in an exothermic reaction dime thyIstibane methyl tellurium in quantitative yield2. The reaction with tetraethyldistibane is best carried out at — 40° to prevent cleavage of carbon-antimony bonds. 

Reaction of monoorganoantimony halides with metals gives compounds containing antimony-antimony bonds as shown in equation 126 and 127 . 

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