# Species Formula 4698 Zirconium(I) bromide (Geo)BrZr 4699 Zirconium dibromideBr2Zr 4700 Zirconium(IV) oxide dibromideOBr2Zr 4701 Zirconium(IV) oxide dibromide (Geo)OBr2Zr 4702 Zirconium tribromideBr3Zr 4703 Zirconium tetrabromideBr4Zr 4704 Zirconium tetrabromide (Geo)Br4Zr 4705 Zr(IV)Br4N2 (FIMZUW10) (Geo)C4H6N2Br4Zr 4706 Zr(IV)Br4N2 (FIMZUW10)C4H6N2Br4Zr 4707 Zirconium hexabromide, dianion (Geo)Br6Zr 4708 Zr(IV)2F8N2 (FELKAI) (Geo) C4H6N2Cl8Zr2 4709 Zr(IV)2F8N2 (FELKAI)C4H6N2Cl8Zr2 4710 Niobium, cationNb 4711 Niobium, atomNb 4712 Dicyclopentadienyl Niobium(II)C10H10Nb 4713 Dicyclopentadienyl Niobium(II) (Geo)C10H10Nb 4714 Nb(II)(NH3)6H18N6Nb 4715 Nb(II)(NH3)6 (Geo)H18N6Nb 4716 Niobium hexanitrile, anion (Geo)C6N6Nb 4717 Niobium hexanitrile, anionC6N6Nb 4718 Niobium(I) oxide (Geo)ONb