The Hafnium sulfide (HfS₂) with CAS registry number of 18855-94-2 is also known as Dithioxohafnium. The IUPAC name is Bis(sulfanylidene)hafnium. Its EINECS registry number is 242-629-5. In addition, the formula is HfS₂ and the molecular weight is 242.62. What's more, this chemical is insoluble in water, acid, alkali, and most organic solvents. It will melt without decomposition or sublimation at a temperature higher than 800 °C.

Physical properties about Hafnium sulfide (HfS₂) are: (1)Exact Mass: 243.89069; (2)MonoIsotopic Mass: 243.89069; (3)Topological Polar Surface Area: 64.2; (4)Heavy Atom Count: 3; (5)Complexity: 18.3; (6)Covalently-Bonded Unit Count: 1.

Preparation of Hafnium sulfide (HfS₂): it is prepared by reaction of sponge hafnium and then sublimed sulfur with iodine transfer agent. The reaction occurs at the temperature of  800-900 °C for at least 70 hours. After the reaction, the crystal should be washed with CCl₄ and CS₂ to obtain product.

You can still convert the following datas into molecular structure:
1. SMILES: S=[Hf]=SCopyCopied
2. InChI: InChI=1/Hf.2S/rHfS2/c2-1-3
3. InChIKey: IBPNRGHKXLNFKF-MQNVFFBUAI
4. Std. InChI: InChI=1S/Hf.2S
5. Std. InChIKey: IBPNRGHKXLNFKF-UHFFFAOYSA-N