“…Müller [11][12][13][14], Sécheresse [15][16][17][18], Wu [19][20][21][22][23][24][25][26][27] and Xin [28][29][30][31] pioneered the work on the heterometallic Mo(W)-M-S (M = Fe, Cu, Ni, Ag, Au, etc.) clusters since 1980s, using [Mo(W)O x S 4−x ] 2− (x = 0, 1, 2) anions as precursors.…”