e/Low valent magnesium compounds

Information
has gloss	eng: Two low valent magnesium compounds have been discovered that are the first examples of stable magnesium(I) compounds. Both examples have the formula L2Mg2, where L represents a bulky anionic ligand. , MgB2 with short Mg-Mg bonds (293 pm, 303 pm, 275 pm, 308pm respectively) had been assumed to contain an Mg2 unit. Calculations had also indicated the stability of the Mg22+ cation
lexicalization	eng: Low valent magnesium compounds
instance of	c/Magnesium compounds