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The ambient-temperature reactions between VCI4 and the sulfurizing agents [(CH3),SiJ2S, [(CH3),CI2S2, [(CH,),C],S, and H2S have been studied. We have observed that VCI4 reacts differently from other transition-metal halides when sulfurized at low temperature. Indeed, the low-temperature sulfurization of VCI4 almost always yields amorphous VS4, with the formation of S-S bonds. The only exception we have observed is the reaction of VC14 with Li2S, which yields Li,VS2.( I ) Rouxel, J.; Brec, R.

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