Poly aminoboranes

Poly(aminoborane) has a relatively simple structure, as shown in Figure 9. Jacquemin and co-workers [63] performed a comprehensive set of calculations to investigate the infrared spectra, vertical excitation energies, geometries, atomic charges and dipole moments as a function of conformation. A variety of theoretical methods were employed, including Hartree-Fock, MP2 and... 

Amorphous poly(aminoborane)s are formed in high yield by reaction (15). 

B5N5H8 and BeNgHio. the BN analogues of naphthalene and biphenyl, have been observed in the mass spectrum of thermal decomposition products of poly(aminoborane), (-BH2-NH2-)x, under Cl conditions [59]. The structure of various formulations of polycondensates obtained from trimethylsilanyl-substituted 2,4,6-triaminoborazine derivatives (see Section 4.2.3.3, p. 186) are primarily based on thermogravimetry and IR spectroscopy [32, 34]. 

BH2 NH2-)n oligomers with n>5 have been studied by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC) [30], as well as by mass spectrometry and X-ray photoelectron spectrometry. The results have been interpreted in terms of a large cyclic structure of poly(aminoborane) [31]. 

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