SEARCH Articles Figures Tables Bridge bond Bridge-bonding Bridging 2-bond 2-electron Electron deficiency Electron-deficient bond Electron-deficient bonding Electron-deficient bridge-bonded main Electron-deficient bridge-bonded main bonding Electron-deficient bridge-bonded main group compounds Electron-deficient bridge-bonded main structures Structures of Main Group Organometallic Compounds Containing Electron-Deficient Bridge Bonds