Synthesis and characterization of a (1+1) cyclic Schiff base of a lower rim 1,3-diderivative of p-tert-butylcalix[4]arene and its complexes of VO2+, , Fe3+, Ni2+, Cu2+ and Zn2+
Synthesis and characterization of a (1+1) cyclic Schiff base of a lower rim 1,3-diderivative of p-tert-butylcalix[4]arene and its complexes of VO2+, , Fe3+, Ni2+, Cu2+ and Zn2+
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