Research on Ti(SO3CF3)4. Part 1. Synthesis and Structural Analysis of the Compounds Obtained by the Reaction of CF3SO3H with TiCl4, Ti(NO3)4, and Ti(ClO4)4, by Reaction of NO2CF3SO3 with TiCl4, and by Reaction of (CF3SO2)2O with Ti(OC2H5)4.