In the binuclear title complex, [W2O(C5H5)(2)(C5H6)(CO)(2)], the W cen
tres are bridged by a 1,4-pentadien-1,4-diyl ligand. The W-W distance
of 2.9426 (5) Angstrom is in accord with a W-W single bond, the W-O di
stance of 1.678(5) Angstrom corresponds to a W=O double bond.