Novel W(II) complexes for reversible addition-fragmentation chain transfer (RAFT) polymerizations was written by Chen, Chuan-Lin;Lo, Yih-Hsing;Lee, Chia-Yi;Fong, Yih-Hsuan;Shih, Kuo-Chen;Huang, Chiung-Cheng. And the article was included in Inorganic Chemistry Communications in 2010.SDS of cas: 27249-90-7 This article mentions the following:
Alkylation of the phosphorus coordination of the diphenyl(dithioformato)phosphine ligand in [W(CO)5(PPh2CS2)]NEt4 (1) at the S atom results in the formation of the novel RAFT agent S閳烘€孾W(CO)5PPh2]S-R (2a, R = CH2Ph; 2b, R = CH2CH閳烘€孒2). These compounds have been shown to be highly effective in reversible addition-fragmentation chain transfer (RAFT) polymerization to produce polymers (homopolymer and diblock copolymer) of predetermined mol. weight and narrow polydispersity (< 1.3). Electron-withdrawing organometallic substituents can increase the activity of RAFT agents. To the best of our knowledge, this is the first report of their use as RAFT agents in polymerization In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7SDS of cas: 27249-90-7).
Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.SDS of cas: 27249-90-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics