钪－铬天青S－镧－邻菲啰啉混合多核配合物显色反应

A STUDY ON THE COLOR REACTION OF MIXED POLYNUCLEAR COMPLEX OF SCANDIUM-CHROME-AUROL-S-LANTHANUM-O-PHENATHROLINE

本文研究了钪－铬天青Ｓ－镧－邻菲琳配合物的形成条件及其有关反应过程。配合物的最大吸收峰位于６１０ｎｍ，相应的摩尔吸光系数为ε＿６１０＝３．２５×１０￣４Ｌ·ｍｏｌ￣－１·ｃｍ￣－１．配合物中各组分的摩尔比Ｓｃ：ＣＡＳ：Ｌａ：Ｐｈｅｎ＝２：６：３：３，相应的分子式为［Ｓｃ（ＣＡＳ）＿３］＿２［Ｌａ（ＯＨ）Ｐｈｅｎ］＿３．

This paper reports the colbr reaction of chrome-azurol-phen complex for scandiumand lanthanum. The polynuclear complex exhibits an absorption maximum at 610 nm and itsmolar absorption was found to be 3.25×10￣4L·mol￣-1·cm￣-1.The molar ratio in the com-plex is Sc : CAS : La : Phen=2 :63:3.The color reaction has been applied to the dorect deternunation of scandium in lanthanum base xynthetic sample with satisfactory resuIts.