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**'A COORDINATE BOND ACTS AS A SINGLE BOND DIRECTED IN A SPECIFIC ORIENTATION AND HENCE SOME COMPOUNDS WITH COORDINATE BONDS SHOW ISOMERISM  -  WHAT DOES IT MEAN ?

laxman , 10 Years ago
Grade 11
anser 1 Answers
Suraj Prasad

Last Activity: 10 Years ago

A coordination complex is the product of a Lewis acid-base reaction in which neutral molecules or anions (called ligands) bond to a central metal atom (or ion) by coordinate covalent bonds.

Ligands are Lewis bases - they contain at least one pair of electrons to donate to a metal atom/ion. Ligands are also called complexing agents.Metal atoms/ions are Lewis acids - they can accept pairs of electrons from Lewis bases.Within a ligand, the atom that is directly bonded to the metal atom/ion is called the donor atom.A coordinate covalent bond is a covalent bond in which one atom (i.e., the donor atom) supplies both electrons. This type of bonding is different from a normal covalent bond in which each atom supplies one electron.If the coordination complex carries a net charge, the complex is called a complex ion.Compounds that contain a coordination complex are called coordination compounds.

Coordination compounds and complexes are distinct chemical species - their properties and behavior are different from the metal atom/ion and ligands from which they are composed.

The coordination sphere of a coordination compound or complex consists of the central metal atom/ion plus its attached ligands. The coordination sphere is usually enclosed in brackets when written in a formula.

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