Interaction Scheme

Molecule

Tetrabutylammonium squaric acid
Tetrabutylammonium squaric acid

Host

2 2 8 8 tetraallyloctahydro 2h pyrimido 1 2 a pyrimidine 9a ylium iodide
tetraallyl-bicyclic guanidinium iodide

Binding Properties

𝜈 Molecule 1 : 1 Host
Ka = 5.18⋅104 M-1
Kd =
logKa = 4.71
T 19.85 °C 293 K
Energy kJ mol-1 kcal mol-1
ΔG = -26.37 -6.3
ΔH = -11.88 -2.84
-TΔS = -14.48 -3.46
J mol-1 K-1 cal mol-1 K-1
ΔS = 49.4 11.8
These are the specifications of the determination of the experimental results.
Detection Method: Direct
Assay Type: Direct Binding Assay
Technique: Isothermal Titration Calorimetry
Molecule: syringe
Partner: syringe
Detailed information about the solvation.
Solvent System Single Solvent
Solvent acetonitrile
Please find here information about the dataset this interaction is part of.
Citation:

V. D. Jadhav, F. P. Schmidtchen, SupraBank 2024, Surprises in the Design of Anion Receptors:  Calorimetry Prevents False Reasoning (dataset). https://doi.org/10.34804/supra.2021092841

Link: https://doi.org/10.34804/supra.2021092841
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Please find here information about the scholarly article describing the results derived from that data.
Citation:

V. D. Jadhav, F. P. Schmidtchen, Org. Lett. 2005, 7, 3311–3314.

Link: https://doi.org/10.1021/ol051109k
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Binding Isotherm Simulations


The plot depicts the binding isotherm simulation of a 1:1 interaction of Tetrabutylammonium squaric acid (0.0003861999928939201 M) and tetraallyl-bicyclic guanidinium iodide (0 — 0.0007723999857878402 M).