Polymers boranamine

The unsubstituted cyclic boranamine polymers (H2NBH2) cannot be prepared by pyrolysis of NH3BH3. These compounds can be formed by preparation of the uns)nnmetrical cleavage product of diborane in liq NHj and subsequent treatment with... 

Coordinately saturated polymers of composition (H2NBH2) are identified but not characterized. They are amorphous materials and their polymerization degree is believed to be quite low ( 15.2.5.3). A polymer of the same formula unit is prepared from pyrolysis of NH3BH3 under a low pressure of nitrogen. This polymer lacks sufficient solubility for molecular weight determination but is crystalline, in contrast to the materials of the same composition reported earlier, and its x-ray diffraction pattern differs from that of any known cyclic boranamine. 

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