Hi I have been doing some potentiometric (pH-metric) titrations on copper complexes with two different bidentate ligands and I need to determine the stability constants and generate speciation curves using Hyperquad software. The problem is that I cannot figure out how use the software for bidentate ligands and for ternary complexes. Does anybody know of a guide or manual for this software that can help with this problem?
Thank you.
Hi, you may find some answers in Coord Chem Rev. article of Hyperquad authors
http://www.hyperquad.co.uk/documents/hyss.pdf
as well in in Talanta
http://www.hyperquad.co.uk/documents/hyss.pdf
In principle, one bidentate ligand is marked as L1 another as L2. Then you provide constants for Cu-L1 and CuL2 complexes as fixed (constant). In the end you need to suggest constants for Cu-L1-L2 species (as refine) and run fitting step by step to get best model.
Good luck!
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