In a typical synthesis, 35 mmol thiol (10 gr ODT, 9 gr HDT, or 7 gr DDT) was dissolved in 15 mL (46.6 mmol) OAm. The mixture was added into a 50 mL three-neck-flask and degassed under vacuum at 80°C for 1 hour. Then, the reaction mixture was heated to 320°C under an argon atmosphere. 50 mg (0.126 mmol) WCl6 was dispersed in 5 ml (15.5 mmol) OAm and just before the injection, to avoid jellification, 240 µL CS2 was added to the mixture. The injection mixture was added dropwise to the reaction mixture over the course of 30 minutes. After injection, the reaction mixture was cooled to room temperature and the product was centrifuged and washed 3 times with a mixture of hexane and ethanol. The product was dispersed in 10 mL toluene for storage.