反应详情

The same experimental methods were used for this study as were used for Example 8. The starburst polyamidoamine methylene-carboxylate terminated material (0.40g 62.5% active, remainder sodium bromide, 0.12 mmol.) was dissolved in 4-5 ml of deuterium oxide. The resultant pH was 11.5-12, which was lowered to 9.4 with 6 N HC1 prior to the experiment. A solution of yttrium acetate was prepared by dissolving yttrium chloride (0.1125g, .37 mmol.) and sodium acetate (0.0915g, 1.1 mmol.) in 1.5 ml of deuterium oxide, thus every 0.5 ml of solution contains one mole equivalent of metal.