The {V ₄Nb ₆O ₃₀} cluster: A new type of vanadoniobate anion structure

A novel {V ₄Nb ₆O ₃₀} addenda: Through the successful introduction of a vanadium atom into the polyoxoniobate system, three novel compounds containing the same unprecedented mixed addenda vanadoniobate cluster {V ₄Nb ₆O ₃₀} were obtained. The incorporation of suitable atoms like V is an intriguing subject providing vast possibilities to enrich polyoxoniobate chemistry.