Assuming a coordination complex is formed with Fe²⁺ and 1,10-phenanthroline (shown below), which of the following statements is true?

Question

Quizplus · Accepted Answer

The Fe²⁺ complex has Fe, S, U, and P atoms coordinated to the iron ion. The 1,10-phenanthroline molecule is a bidentate ligand, meaning that it can coordinate to the iron ion through two atoms (specifically, two nitrogen atoms in this case). Therefore, each phenanthroline molecule can contribute two electrons to the coordination bond with the iron ion. If three phenanthroline molecules are coordinated to the iron ion, then there are a total of six coordination bonds, which would correspond to a coordination number of 6. Therefore, the correct answer is D, "If three 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 6."

Assuming a Coordination Complex Is Formed with Fe2+ and 1,10-Phenanthroline

Assuming a Coordination Complex Is Formed with Fe²⁺ and 1,10-Phenanthroline