The oxide is dissolved in alcoholic NaOH forming [OsO2(OH)42− anions, which, when reacted with NH4Cl, forms OsO2Cl2(NH4)4.
The oxide is dissolved in alcoholic NaOH forming [OsO2(OH)42- anions, which, when reacted with NH4Cl, forms OsO2Cl2(NH3)4.