Metal-Metal Bonds in Ir4(CO)12

Metal-metal bonding is a type of bonding that occurs between two metal atoms. In Ir4(CO)12, there are four iridium (Ir) atoms, and each of them is bonded to each other through metal-metal bonds. Therefore, the total number of metal-metal bonds present in Ir4(CO)12 is six.

Explanation:

- Ir4(CO)12 is a chemical compound that contains four iridium (Ir) atoms and twelve carbon monoxide (CO) molecules.
- The iridium atoms are arranged in a tetrahedral shape, with each iridium atom bonded to the other three iridium atoms.
- The metal-metal bonds in Ir4(CO)12 are formed due to the overlapping of the d-orbitals of the iridium atoms. This overlapping results in the formation of covalent bonds between the metal atoms.
- The metal-metal bonds in Ir4(CO)12 are relatively weak compared to the metal-carbon bonds between the iridium atoms and the carbon monoxide molecules.
- The metal-metal bonds in Ir4(CO)12 are important for the stability and structural integrity of the compound.

Conclusion:

In conclusion, Ir4(CO)12 contains six metal-metal bonds. These bonds are formed due to the overlapping of the d-orbitals of the iridium atoms and are important for the stability and structural integrity of the compound.