# Species Formula 7260 Hafnium(IV) hexabromideBr6Hf 7261 Hafnium(IV) hexabromide (Geo)Br6Hf 7262 Hafnium(I) iodideIHf 7263 Hafnium(I) iodide (Geo)IHf 7264 Trimethyl hafnium iodide (Geo)C3H9IHf 7265 Trimethyl hafnium iodideC3H9IHf 7266 Hafnium(IV) oxide diiodideOI2Hf 7267 Hafnium(IV) hexaiodide, dianionI6Hf 7268 Hafnium(IV) hexaiodide, dianion (Geo)I6Hf 7269 Hafnium, dimerHf2 7270 Tantalum, cation Ta 7271 Tantalum, atomTa 7272 Tantalum, anionTa 7273 TaH3H3Ta 7274 TaH3 (Geo)H3Ta 7275 Pentamethyl tantalum(V)C5H15Ta 7276 Pentamethyl tantalum(V) (Geo)C5H15Ta 7277 Ta(V)(Me)5 (DOSCIX) (Geo)C5H15Ta 7278 Ta(V)(Me)5 (DOSCIX)C5H15Ta 7279 Tantalum, pentakis(dimethylamino)- (Geo)C10H30N5Ta 7280 Ta(II)(NH3)6H18N6Ta
OPEN(4,6) MECI CHARGE=1 PM7 Tantalum, cation H=350.8 HR=NIST Ta 0.00000000 +0 0.00000000 +0 0.00000000 +0