Iconography : (η-X)2[(μ-S2)M2] complex cores (X = O, S; M = MoV, WV): the syn/anti isomerism revisited by means of DFT calculationsA series of five sulfur-rich binuclear, di-anionic complexes involving the (畏-X)[(渭-S)M] core (X = O, S; M = Mo, W), and ...