A bifunctional metalloligand with metal-C (Ge-C) bonds, bis-(carboxyethylgermanium) sesquioxide (H2E2Ge2O3, where E = -CH2CH2COO-), has been used to make metal-organometallic frameworks (MOMFs) Cd-1.5(E3Ge3O5) (1) and Pb(E2Ge2O3) (2). In the structures, the inorganic Ge2O3 cores of the metalloligands polymerize to form two kinds of infinite Ge-O chains, and the organic carboxyls induce the Cd and Pb ions to produce Cd-O and Pb-O chains. Further, the Ge-O chains link the Cd-O/Pb-O chains via -CH2CH2- groups to result in two novel MOMFs, showing high thermostability and blue-violet emission.