1,1 -thiobis , structural

Structure CI-CH2-CH2-S-CH2-CH2-Cl Synonyms bis(2-chloroethyl)sulfide 2,2 -di-chlorodiethyl sulfide /6, /1-dichloroethyl sulfide l,l-thiobis(2-chloroethane) 1-chlo-ro-2-(/6-chloroethylthio)ethane yperite HD... 

Name CAS Chemical name Chemical category Structural formula Mixture Product contents Lowilite NDB 021 14516-71-3 1843-05-6 (butylamine)[[2,2 -thiobis[4-(1,1,3,3-tetramethylbutyl)phenolato]](2-)-0,0, S] nickel octabenzone 1 nickel quencher H ... 

Figure 1.6. The structural formula of mustard gas, 1,1-thiobis(2-chloroethane).

The development of metal complexes, particularly those based on nickel, resulted in compounds which exhibited relatively low extinction coefficients in the near ultraviolet region and yet in many instances were found to be superior in performance to the currently available ortho-hydroxyaromatic compounds [3,5]. This finding resulted in a search for some other feasible mechanistic function. As carbonyl photolysis was considered to be an important initiation process which gives rise to both free radicals and backbone cleavage, then deactivation or quenching of the excited-state precursor should prove an effective means of photoprotection. Effective structures in this respect were tris(dibenzoylmethanato) chelates of Fe and Cr (Structure 5), nickel oxime chelates (Structure 6), and the nickel complex of Structure 7, nick-el(ii) 2,2 -thiobis(4-f-octylphenolato)- -butylamine. 

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