V. S. Khotimsky, S. Matson, E. G. Litvinova
2003
Citations
0
Influential Citations
7
Citations
Journal
Polymer science. Series A, Chemistry, physics
Abstract
Polymers of 4-methyl-2-pentyne were synthesized by polymerizing a disubstituted hydrocarbon acetylene, 4-methyl-2-pentyne, with catalytic systems composed of tungsten hexachloride or niobium and tantalum pentachlorides in combination with organometallic cocatalysts (Ph 3 Bi, Et 3 SiH, Bu 4 Sn, Ph 4 Sn). Syntheses were carried out at various temperatures in solvents with different polarities. Based on 13 C NMR and IR data on the geometry of the synthesized polymers and proceeding from their theoretical spectra calculated in terms of normal vibrations, NMR signals and IR hands were assigned to cis- and trans-structures of poly(4-methyl-2-pentyne). X-ray diffraction study revealed that polymer samples prepared under different conditions are distinguished by their supramolecular organization. The relationship between the structure of the polymer and its solubility in a variety of organic solvents was established.