Solution Studies on Co(II), Ni(II), Cu(II), and Zn(II) Complexes of Hexamethylenetetramine in Aqueous and Non-Aqueous Solvents

<table>Variation of the absorbance <i>A</i> with HMTA/Cu <sup>2+</sup> ratio <i>R</i>.</table>

International Journal of Inorganic Chemistry

Figure 7: Solution Studies on Co(II), Ni(II), Cu(II), and Zn(II) Complexes of Hexamethylenetetramine in Aqueous and Non-Aqueous Solvents 