High-pressure new phases of V-N compounds

The high-pressure diagram of V-N compounds is enriched by proposed seven new stable high-pressure phases.The P-1-VN4 with the armchair N-rich structure may be quenched to ambient conditions.The formed N-N covalent bond plays an important role for the structural stability of N-chain.The charge transfer results in a V-N ionic bond interaction,which further improves the stability of N-chain structure.The P-1-VN4,P4mnc-VN8,and Immm-VN10 with the outstanding detonation properties have potential application in explosive field.