11.9 What are electron deficient compounds ? Are and electron deficient species ? Explain.
Electron-deficient compounds are those in which the octet of the central atom is not completed. Therefore, the metal wants to complete its octet by accepting an electron from a donor molecule.
is an electron-deficient compound because of the central atom, Boron has only 6 electrons, two electrons are needed to complete its octet.
silicon has 4 valence electrons and by covalent bonding, it gets 4 electrons from four chlorine atom. Hence, is not an electron-deficient molecule.