The assignment of 11B and 1H resonances in the post-reaction mixture from the dry synthesis of Li(BH3NH2BH2NH2BH3)

We report a detailed (Formula presented.) NMR and (Formula presented.) NMR study of as synthesised (Formula presented.) obtained in a novel dry-synthesis method. A combination of 1D and 2D single- and triple-quantum techniques was used for the assignment of all observed signals. Minor side-products and reactants were detected in the product: (Formula presented.), (Formula presented.), (Formula presented.), and two yet unknown salts containing 7-membered chain anions: (Formula presented.) and (Formula presented.). We believe the assignment provided within this study might be helpful when analysing the mixtures containing numerous ammonia borane derivatives, which often give overlapping signals that are hard to distinguish