The Kinetic Study of the Oxygen-Exchange Reaction of Some Alkylarsonates and Dialkylarsinates with Water
作者:Akiko Okumura、Midori Fushimi、Hiroko Hanaki、Akiko Yamada、Youko Gofuku、Mika Kagawa、Nobuko Niwa、Masako Yamamoto、Masayasu Iida
DOI:10.1246/bcsj.65.1397
日期:1992.5
°C were analyzed in terms of the rate law to obtain the values of the rate constants (k1–k6). The activation parameters were obtained for the k1 paths of both arsonates and arsinates, which are the reaction between R′AsO32− or R′2AsO2− and water. It is noticeable that the values of the activation entropies of the arsonates were found to be negative, while those of the arsinate were found to be positive
在大于 6 的 pH 范围内测量胂酸烷基酯(甲基-、丁基-、己基-和苄基-)和胂酸二烷基酯(二甲基-和二丁基-)与溶剂水的氧交换反应速率 (RS),并且在温度在 30 到 0 °C 之间。对于纵火犯,比率 (R) 由以下比率定律表示: R = k1[A2−] + k2[HA−] + k3[H2A] + k4[HA−]2 + k5[HA−][H2A] + k6[H2A]2,其中 A2-、HA- 和 H2A 分别表示 R'AsO32-、R'AsO3H- 和 R'AsO3H2(R' = 烷基)。对于砷酸盐,R = k1[R'2AsO2−] + k2[R'AsO2H] (pH > 9)。根据速率定律分析 0 和 30 °C 时砷酸盐的交换率,以获得速率常数 (k1-k6) 的值。获得了砷酸盐和砷酸盐的 k1 路径的活化参数,它们是 R'AsO32- 或 R'2AsO2- 与水之间的反应。值得注意的