STUDY ON PHYSICAL AND CHEMICAL STABILITIES OF METALLOFULLERENES PROVED BY NUCLEAR PHENOMENA

由核现象提出的独特问题是碳笼对核反应和核衰退的稳定性。关于碳笼的这种特性的知识不仅对富勒烯的放射活性标签很重要，但也对研究富勒烯笼的物理和化学稳定性和/或对回收能量的潜在补充，and against the sudden change of nuclear charge of the cage or that of endohedral metal atoms.It can be considered that such "retention y\"它不仅是一种复杂的产品，不仅是金属氟醚在（n， γ）反应中对回收能量的生存能力，而且也是在中子辐射后的每个步骤中对富勒烯分子和反应器的伽马剂量的稳定性。The ratios of retention yield observed for y D1169 y D1Yb/y D1175 y D1Yb and y D1153 y D1Gd/y D1161 y D1Gd have led to the conclusion that the thre ... More 保留对与（n， γ）反应相关的再生现象的破坏其M@ C-D282-D2金属荧光素的能量，约为27-29 eV。The overall retention yield of 20% in the reactor irradiation was deduced by the experiments on La@CイD282エD2 that were aimed to cancel out the corrections requires for chemical yields during the chemical treatment。It is to fur？investigate the influence of radioactive decay process on the physical and chemical stability of metallofullerenes。它包括在空气中正常溶剂提取和高效液相色谱分离的化学过程中稳定的金属填充物，因为空气中金属原子的β-衰变和EC-衰变过程也稳定，就像女儿的氧化状态一样，因为在相同的碳盒中的父碳释放物。但是，如果氧化状态被核转变改变了，那么它就出现在化学上不稳定的金属膨胀器被形成为在β-decay of y D1177 y D1 Yb-y D1177 y D1 Lu的氧化状态很可能从+2到+3改变。However， the existence of a special kind of CイイD282イイD2carManagement cage that forms chemically stable metal atoms of both +2 and +3 oxidation state is experimentally found for the first time by the study of EC decay ofイD1146イエD1Gd-イD1Eu。Less（低）

The unique problem posed by nuclear phenomena is the stability of carbon cages against nuclear reactions and nuclear decay. Knowledge of such property of carbon cages is important not only for radioactive labeling of fullerenes but also for investigating the physical and chemical stability of fullerene cages against sudden jerks and/or a sudden supply of a hung amount of recoil energy, and against the sudden change of nuclear charge of the cage or that of endohedral metal atoms.It can be considered that such "retention yield" is a complicated product of not only the survivability of the metallofullerenes against the recoil energy in the (n, γ) reaction, but also the stability against the gamma dose in the reactor of the fullerene molecules and chemical yield in each step of the chemical procedure applied to the sample after neutron irradiation. The ratios of retention yield observed for ィイD1169ィエD1Yb/ィイD1175ィエD1Yb and ィイD1153ィエD1Gd/ィイD1161ィエD1Gd have led to the conclusion that the thre … More shold energies for destruction of their M@CィイD282ィエD2 metallofullerenes following the recoiling phenomena associated with (n, γ) reaction are about 27-29 eV. The overall retention yield of 20 % in the reactor irradiation was deduced by the experiments on La@CィイD282ィエD2 that were aimed to cancel out the corrections requires for chemical yields during the chemical treatment.It is to further investigate the influence of radioactive decay process on the physical and chemical stability of metallofullerenes. It is concluded that the metallofullerenes which are stable during the chemical process of ordinary solvent extraction and HPLC separations in air are also stable against the β-decay and EC-decay process of the metal atom in the cage, as long as the oxidation state of the daughter nuclide remains the same with that of the parent nuclide within the same carbon cage. But if the oxidation state is changed by nuclear transformation, it is appeared to form chemically unstable metallofullerenes are formed as demonstrated in the β-decay of ィイD1177ィエD1Yb-ィイD1177ィエD1Lu where the oxidation state is likely to have changed from +2 to +3. However, the existence of a special kind of CィイD282ィエD2 carbon cage that forms chemically stable metallofullerenes with metal atoms of both +2 and +3 oxidation state is experimentally found for the first time by the study of EC decay of ィイD1146ィエD1Gd-ィイD1146ィエD1Eu. Less