Table 2: Linear response ranges and slopes obtained from the curves to heparin of the three osmium complexes.

ComplexSolutionLinear range (μg/mL)Slope

Os(bpy)2CO(4-phpy) (PF6)2Ethanol solution1–380.061
Os(phen)2CO(4-phpy) (PF6)2Ethanol solution1–400.072
Os(phen)2CO(py) (PF6)2Ethanol solution1–240.074
Os(phen)2CO(4-phpy) (PF6)2Aqueous solution1–100.116
Os(phen)2CO(PPh3) (PF6)2Aqueous solution1–10−0.036*

Value from the Stern-Volmer equation.