N-(2-Pyridyl)acetamido-N,N'dimolybdenum; The (new) shortest known molybdenum-molybdenum quadruple bond. Inorganic Chemistry, (18)10:2717--2719, 1979. [PUMA: acetamido bond molybdenum pyridyl pyridylacetamidomolybdenum;molybdenum quadruple;mol short structure]