Coupling aryl iodides with sulfur source to form thiol phenol try the reaction with sodium sulphide.

Hello Winnie

Sodium sulfide can work as Dr Madhukar proposed but with this reagent you can have different subproducts and sometimes as major products such as the symmetric product with one or two sulfide bridges ..

Moreover, you can use two different reagents, the first one is the sodium salt of thioacetic acid then you can deprotect by base to have the thiol, but depending on the substituents on the phenyl ring you can an effective deprotection or not

The other reagent is trityl mercaptan (HSCPh3), a very good reagent for thiol source, where you can deprotonate directly by BuLi and then add directly your aryl iodide. Deprotection can be done in one step by thioacetic acid.or in two steps by forming the sulfide bridge using Iodine then reduction by LAH

CuI-Catalyzed Coupling of Aryl Iodides with Sulfur and Subsequent Reduction gives the desired product thiolphenol .