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磺化木麻黄单宁金属配合物逐级稳定常数的研究
STUDIES ON STEPWISE STABILITY CONSTANTS OF COORDINATION COMPOUNDS FROM SULFONATED SHEOAK ( CASUARINA EQUISETIFOLIA L. ) TANNIN WITH METALLIC IONS
【摘要】 以邻苯二酚为模型化合物,在室温及恒定的离子强度条件下,用pH电位法,测定了磺化木麻黄单宁与Ca2+、Mn2+、Zn2+、Fe3+等金属离子所形成的配合物(MLn)的逐级稳定常数。各级稳定常数间有如下规律:lgK1>lgK2>lgK3>lgK4。
【Abstract】 The stepwise stability constants of coordination compounds from sulfonated sheoak tannin and metallic ions have been determined with catechol as model compound at 20℃ and constant ionic strength. The stepwise stability constants are in the order :1gK1 >lgK2 >lgK3
【关键词】 磺化木麻黄单宁;
pH电位法;
逐级稳定常数;
邻苯二酚;
配合物;
【Key words】 Sulfonated sheoak tannin; pH potential method; Step wise stability constants; Catechol; Coordination compound;
【Key words】 Sulfonated sheoak tannin; pH potential method; Step wise stability constants; Catechol; Coordination compound;
- 【文献出处】 林产化学与工业 ,Chemistry & Industry of Forest Products , 编辑部邮箱 ,1993年02期
- 【被引频次】14
- 【下载频次】134