Question

Write the formula for the linkage isomer of [Cr(H₂O)₅SCN]²⁺.

Answer 1

The formula for the linkage isomer of [Cr(H₂O)₅NCS]²⁺ is [Cr(H₂O)₅SCN]²⁺. Linkage isomerism occurs when the same complex ion binds to a central metal through different atoms of a ligand. In this case, the thiocyanate ligand (SCN-) can bind through either the sulfur (S) or the nitrogen (N) atom.