Tchapla, A. published the artcileConformational study of long chains in solution. Generality of a coiling phenomenon in carbon chains having at least 9 atoms, Product Details of C3H12Cl2N2, the publication is Tetrahedron (1982), 38(14), 2147-55, database is CAplus.
The conformations of R2N+R1(CH2)nN+R1R2 (R, R1 = H, Me, n = 2-14, 18) were studied using ¦¤pK, 13C spin lattice relaxation times (T1), and 1H chem. shift-concentration relations. These constants varied at n = 2-9; at n = 9-18 ¦¤pK were constant and T1 were similar. These observations are explained by a conformational anal. and a correlation between the average conformation in solution and the effect of these diammonium salts on DNA is discussed. The results are interpreted in terms of electrostatic interactions and torsional hydrophobic energies for the ionic bifunctional compounds At n = 2-5 the chain length is maximal; for n = 5-9 length is not maximal but steadily increasing. At n = 9-18 the distance between the 2 ionized ends is approx. constant and the conformation of the chain is coiled.
Tetrahedron published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C25H23NO4, Product Details of C3H12Cl2N2.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia