Consider the following isomers of iron(II) coordination compound:




What are the names and formulas for the compounds?

• A. I: [Pd(CO)₅(NCS)]Cl; pentacarbonylthiocyanatoiron(II) chlorideII: [Pd(CO)₅(SCN)]Cl; pentacarbonylisothiocyanatoiron(II) chlorideIII: [PdBr(CO)₅]OH; bromopentacarbonyliron(II) hydroxide
• B. I: [Pd(CO)₅(NCS)]Cl; pentacarbonylisothiocyanatoiron(II) chlorideII: [Pd(CO)₅(SCN)]Cl; pentacarbonylthiocyanatoiron(II) chlorideIII: [PdBr(CO)₅]OH; bromopentacarbonyliron(II) hydroxide
• C. I: [Pd(CO)₅(SCN)]Cl; pentacarbonylthiocyanatoiron(II) chlorideII: [Pd(CO)₅(NCS)]Cl; pentacarbonylisothiocyanatoiron(II) chlorideIII: [PdBr(CO)₅]OH; bromopentacarbonyliron(II) hydroxide
• D. I: [Pd(CO)₅(SCN)]Cl; pentacarbonylisothiocyanatoiron(II) chlorideII: [Pd(CO)₅(NCS)]Cl; pentacarbonylthiocyanatoiron(II) chlorideIII: [PdBr(CO)₅]OH; bromopentacarbonyliron(II) hydroxyl

Answer: (C)