Bochenska, Maria; Banach, Robert; Zielinska, Anna; Kravtsov, Victor Ch. published the artcile< Lower rim substituted tert-butylcalix[4]arenes (I). The structure and complexing properties in ion-selective PVC membrane electrodes>, Computed Properties of 5326-82-9, the main research area is calixarene lower rim amide substituted preparation; ion selective PVC membrane electrode calixarenamide.
Di- and tetraamide tert-butylcalix[4]arenes were synthesized and described. Their ionophoric properties were studied in liquid membrane ion-selective electrodes. The correlation between the chem. structure (conformation in solution determined by 1H NMR) and potentiometric ion-selectivity and complex formation constant have been studied. The PVC membrane electrodes based on tetraamides I (R = n-Bu2N, morpholino, 1-piperidinyl, CH3(CH2)6MeN) show high sodium selectivity and are stable and long lasting. Disubstituted amides II (R = Et2N, n-Pr2N, i-Pr2N, n-Bu2N, i-Bu2N, morpholino, 1-piperidinyl) are selective for larger and more lipophilic ions, e.g., guanidinium ion. The crystal structure of the diamide II (R = n-Bu2N) was determined by single crystal X-ray anal. Crystals of II (R = n-Bu2N) are triclinic, space group P-1, with: a = 16,669(8), b = 17.795(10), c = 20.984(8) Å, α = 91.08(4)°, γ = 90.73(4)° and Z = 4. Ionophore II (R = n-Bu2N) possesses a distorted cone conformation and is substituted at the proximal phenol rings.
Journal of Inclusion Phenomena and Macrocyclic Chemistry published new progress about Conformation. 5326-82-9 belongs to class amides-buliding-blocks, and the molecular formula is C10H20ClNO, Computed Properties of 5326-82-9.
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics