Structure of B3H7[Fe(CO)3]2

The given compound B3H7[Fe(CO)3]2 contains boron, iron, carbon, and hydrogen atoms. It is a boron hydride complex of iron carbonyl. The structure of this compound can be determined by applying the concepts of boron hydride complex and iron carbonyl complex.

Nido Structure of B3H7[Fe(CO)3]2

The structure of B3H7[Fe(CO)3]2 is Nido structure.

Explanation:

- Boron Hydride Complex: The boron hydride complex contains boron atoms bonded to hydrogen atoms. In this complex, the boron atoms are located at the corners of a polyhedron and the hydrogen atoms occupy the remaining positions.
- Iron Carbonyl Complex: The iron carbonyl complex contains iron atoms bonded to carbon monoxide molecules. In this complex, the iron atom is located at the center of a polyhedron and the carbon monoxide molecules are located at the corners of the polyhedron.
- Nido Structure: The Nido structure is a type of boron hydride structure in which one vertex of the polyhedron is missing. In this structure, the boron atom and the missing vertex are connected by an additional bond.

In the case of B3H7[Fe(CO)3]2, the boron hydride complex has a Nido structure. The boron atoms form a triangular base of the Nido structure and the hydrogen atoms occupy the remaining positions. The iron carbonyl complex is attached to the missing vertex of the Nido structure. The iron atom is located at the center of the polyhedron and the carbon monoxide molecules occupy the remaining positions.

Therefore, the correct option is B) Nido structure.