In the title molecular complex, (I), the W atom is in an octahedral environ
ment with four equatorial carbonyl ligands and a fifth in an axial position
trans to the monodentate dipyridylamine ligand. The long dimension of this
last bisects the angle between two of the equatorial carbonyl groups and w
hile the non-bonded pyridyl N atom is directed away from the W atom, the br
idging amine group is directed towards it. Thus, in addition to the N atom
to which it is attached, the amino H has two nearest neighbour C atoms of e
quatorial carbonyl groups but does not participate in hydrogen bonding in a
ny real or usual sense. The W-C bond distance for the axial carbonyl group
is notably less than those of the equatorial groups.