Organometallic polymer composed of macromolecules containing exclusively alternating metal and oxygen atoms in the main chain: \[\ce{-ML_{x}-O\bond{-}}\] where \(\ce{M}\) is a metal atom such as \(\ce{Al}\), \(\ce{Ge}\), \(\ce{Sn}\), or \(\ce{Ti}\), and \(\ce{L}\) is a metal-bonded substituent (ligand).