The complex formation between three tris(oxaalkyl) berates (B2, B3, B4) and
SbCl5 as well as the structure of these complexes were studied by calorime
tric and NMR methods. Results of the calorimetric titration indicate a depe
ndence of Delta H of the reaction heats on the length of the oxaalkyl chain
s, and a formation of stable complexes. The H-1 and C-13 NMR data confirmed
the formation of the respective stable complexes. The structure of the com
plexes is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.