Question

What is a co-ordinate bond? Explain with an example.

Answer 1

Answer:

A coordinate covalent bond,[1] also known as a dative bond[2] or coordinate bond[3] is a kind of 2-center, 2-electron covalent bond in which the two electrons derive from the same atom. The bonding of metal ions to ligands involves this kind of interaction. This type of interaction is central to Lewis acid-base theory.

Explanation:

Coordinate covalent bonding is pervasive.[4] In all metal aquo-complexes [M(H2O)n]m+, the bonding between water and the metal cation is described as a coordinate covalent bond. Metal-ligand interactions in most organometallic compounds and most coordination compounds are described similarly.

The term dipolar bond is used in organic chemistry for compounds such as amine oxides for which the electronic structure can be described in terms of the basic amine donating two electrons to an oxygen atom.

R

3N → O

Answer 2

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Here is your answer

CO ordinate covalent bond :

» It is a special type of covalent bond in this bond an electron pair is shared by the two atoms but the shared electron pair is contributed by only one of the two atoms

»After sharing it becomes common property of both the atoms

»The atom which contributes the electron pair is called donor and the atom which accepts the electron pair for sharing is called acceptor

» The donar atom must have one or two lone pairs of electrons while the acceptor atom is short of two electrons to get it's octet

» It is represented by an arrow mark from donor to acceptor

eg: Formation of the ammonia ion

» In NH3 nitrogen has a lone pair of electrons and H+ has vacant orbital. So NH3 donates lone pair of electrons to H+ ion and forms NH4+ ion

Properties :

These compounds dissolves in non polar solvents like benzene CCl4

These compounds do not conduct electricity