Probing the structure and aromaticity in the tungsten trimer W32+ and all-metal compounds W3X+/-, W3Y2+/0, and W3Al3+/+ (XÂ =Â Li, Na, K and YÂ =Â Be, Mg, and Ca)

The top-eight valence MOs responsible for the ground state W32+ (D3h, 1A1′).