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Liquid—liquid extraction of transition metal ions with macrocyclic Schiff bases containing phenol or thiophene subunits

✍ Scribed by Shigeki Abe; Tyo Sone; Kazuhito Fujii; Masatoshi Endo

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
522 KB
Volume
274
Category
Article
ISSN
0003-2670

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✦ Synopsis

Two types of macrocychc Schti bases contammg either thlophene or phenol subumts were synthesized and the effect of hgand atoms on the hqmd-hqmd extractlon of blvalent transltlon metal Eons was studled The phenol groups m the macrocycle led to a large mcrease m the extractlon of transltlon metal ions The least stable manganese-(II) complex was extracted quantltatnrely mto mtrobenxene as an ion pnr with tetrapbenylborate Ion at pH 9 Copper was selectively extracted from weakly acldlc media, pemuttmg eta separation from manganese@), cobalt(II), mckel(I1) and zmc(I1) The composltlon of extracted coppel(I1) species was evaluated The extractabtity of metal complexes with a cychc tetraaza SchttT base has been compared Hrlth that of the correspondmg acychc Schtff base

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