# Species Formula 4553 Y(III)N3 (FAMVEV)C27H54N3Y 4554 Y(II)(NH3)6H18N6Y 4555 Y(II)(NH3)6 (Geo)H18N6Y 4556 Y(III)N8(3+) (ROGRUA) (Geo)C8H32N8Y 4557 Y(III)N8(3+) (ROGRUA)C8H32N8Y 4558 Y(III)N9(3+) (XAWXIC) (Geo)C45H33N9Y 4559 Y(III)N9(3+) (XAWXIC)C45H33N9Y 4560 Yttrium(II) oxide (Geo)OY 4561 Yttrium(II) oxideOY 4562 Yttrium oxide, anionOY 4563 Y(Cp)3O (BACZOU) (Geo) C19H23OY 4564 Y(Cp)3O (BACZOU)C19H23OY 4565 Y(III)(Cp)2O2(+) (PEZDAZ) (Geo)C16H22O2Y 4566 Y(III)(Cp)2O2(+) (PEZDAZ)C16H22O2Y 4567 Yttrium(III) hexaquo (Geo)H12O6Y 4568 Y(II)(H2O)6H12O6Y 4569 Y(II)(H2O)6 (Geo)H12O6Y 4570 Y(III)O8(3+) (BEJDOJ) (Geo)H16O8Y 4571 Y(III)O8(3+) (BEJDOJ)H16O8Y 4572 Y(III)O8 (YACACT) (Geo)C15H25O8Y 4573 Y(III)O8 (YACACT)C15H25O8Y