钇与2-(4'-氯-2'-膦酰基-苯偶氮)-7-(2',6'-二溴-4'-氯-苯偶氮)-1,8-二羟基-3,6-萘二磺酸配位反应驰豫动力学研究  

Studies on Relaxation Kinetics of Coordination Reaction Between Yttrium and 2-(4'-Chloro-2'-phosphono-phenyIazo)-7-(2',6'-dibromo-4'-chloro-phenylazo)-1,8-dihydroxy-3,6-naphthalene Disulfonic Acid

作　　者：安从俊[1] 方贤安[1] 林智信[1] 曾福生[1] 

机构地区：[1]武汉大学化学系,武汉430072

出　　处：《高等学校化学学报》1992年第9期1246-1248,共3页Chemical Journal of Chinese Universities

摘　　要：用跳浓驰豫法测定不同温度下的驰豫时间τ.根据拟定的机理导出了1/τ的函数表达式为获得表观速率常数k及摩尔吸光系数ε,表观活化能为52.82 KJ/mol,活化焓为50.34 kJ/mol,活化熵在278K～298K范围内为负值,配合物稳定常数lgK'.为13.84。与孤立变量法、比尔法、平衡移动法获得的结果吻合.In this paper,the relaxation time was determined at different temperatures by the concentration jump relaxation method.The expression of l/t was derived from the assumed mechanism of reaction.The apparent rate constant and molecular absorbance index were obtained by the concentration-jump relaxation method.The arrhemus activation energy is 52.82 kJ/mol and the activation enthalpy is 50.43 kJ/mol.The activation entropy is a negative in the range of 278 K^298 K.The stability constant of complex is 13.84.These experimental results are in agreement with those obtained by using other methods.

关 键 词：配位反应 驰豫动力学 钇 

分 类 号：O614.322[理学—无机化学]