| abstract |
The chelating compounds useful in the invention comprise the condensation product, as well as derivatives thereof, of two equivalents of a trimethyl cyclohexane-anhydride acid chloride derivative with one equivalent of an aromatic diamine. The invention comprises the method of using those chelating compounds as chelating agents for metals, metal ions or ions of metal complexes. In a preferred embodiment of the invention the binding moities of the cyclohexane derivatives are rigidly held opposite each other, by restricting their rotation about the N-C aryl bonds, in order to more effectively bind the metals or the ions. |