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The polymerization of 2,3,4,5,6‐pentafluorobenzyl 2‐diazoacetate is conducted at ambient temperature and catalyzed by [(l‐prolinate)RhI(1,5‐dimethyl‐1,5‐cyclooctadiene)] or [(l‐prolinate)RhI(1,5‐cyclooctadiene)] yielding C1 polymers with molecular weights of 3000–4000 g mol−1 and dispersity between 1.1 and 1.3. Incorporation of the pentafluorobenzyl group into the C1 polymer results in a different...
A method for the synthesis of chromeayurol-s (CA-S) chelate forming resin and the determination of traces of gold and palladium in geological samples is presented. Experiments have shown that gold and palladium in solution are enriched on chromeayurol-s chelate forming resin column in pH 1 hydrochloric acid without adsorpting other base metal irons, and are eluted with 3% acidic thiourea. The eluate...
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