Oxidation state (II) of molybdenum and tungsten

Halides of molybdenum(II) and tungsten(II)

molybdenum(II) halides (MoX2) and tungsten(II) halides (WX2):

All MX2 are known except MF2.

MX2 are found as clusters, for example MoBr2 is found as [Mo6Br8]Br4. 2H2O which is containing metal – metal bond