. . "Found: C, 46.83; H, 9.50; Br, 27.81; N, 4.96; S, 11.34.Example 2This example demonstrates the measurement of the time-dependent surface tensions of aqueous solutions during redox-induced transformations of water-soluble surfactants from bolaform (PRRP, where P is a polar head group and R is a hydro-phobicchain) to monomeric (RP) structures." . .