A (H2O)4/crown ether network spanned between organometallic complex metal fragments.

[Mo(eta3)-C3H5)(CO)2(bipy*)Cl] undergoes trigonal twist rearrangements in solution, so that three isomers are coexisting. It was used as a starting material leading to a dinuclear complex containing a hydrogen-bonded network of H(2)O and crown-ether molecules between two Mo(eta3-C3H5)(CO)2(bipy*) moieties.