Disclosed are hexacoordinate silicon-containing precursors, methods of synthesizing the same, and methods of using the same to deposit silicon-containing films using vapor deposition processes for manufacturing semiconductors, photovoltaics, LCD-TFT, flat panel type devices, refractory materials, or aeronautics. The hexacoordinate silicon-containing molecule have the following formula: (I), wherein each L1, L2, L3 and L4 is independently selected from oxygen or nitrogen atoms; L1 and L2 are joined together via a carbon bridge having one to three carbon atoms; L3 and L4 are joined together via a carbon bridge having one to three carbon atoms; L1, L2 and the carbon bridge forming a monoanionic ligand bonded to silicon; and L3, L4 and the carbon bridge form a monoanionic ligand bonded to silicon.