A theoretical study on the structures and heats of hydrogenation of the BN-analogs of barrelene

In the present study, we have calculated the structures, energies of barrelene, the boron-nitrogen (BN) analog of barrelene and their hydrogenated products by using the B3LYP/cc-pVTZ method. The G3MP2B3 method is further employed to calculate the heats of formation and heats of hydrogenation for these species. The stepwise heats of formation of BN-barrelene are found to be much smaller than those of barrelene. The heats of hydrogenations of the second step and the third step of BN-barrelene are small. This indicates that BN-barrelene and its hydrogenated products might be potential hydrogen-storage compounds.