THE STUDY ON SYNTHESES AND SOLID-STATE PROPERTIES OF INTERSTITIAL COMPOUNDS BASED ON THE MOLECULAR INTERSPACE ELUCIDATED BY MEANS OF POSITRON ANNIHILATION

碱金属饱和掺杂的富勒化物M_6C_<60> (M=K, Rb, Cs)具有三个正电子寿命组分；0.21-0.24、0.60-0.75和3.2-3.7 ns。第一个分量来自晶体中C_<60>分子内部和周围的电子与正电子的自由湮灭，第二个分量来自晶体表面的湮灭，第三个分量来自通过正电子离子（o-Ps）的湮灭。纯C_<60>晶体的单组分为0.427 ns。在蒙脱石的范德华间隙中，Na^+被Al^<3+>、Zn^<2+>、Pb^<2+>、Cu^<2+>、Mg^<2+>取代，形成有机间隙化合物，并与烷基铵形成蒙脱石，其间隙被长烷基链填充。多普勒展宽光谱的h参数为0.55 ~ 0,58；第2寿命组分1.12 ~ 1.74 ns与原始烷基铵盐晶体的值有很好的相关性，说明正电子湮灭发生在范德华隙区。进一步将氧与无机间隙化合物结合形成金属-氧复合物，包括蒙脱石。Al-oxine和Mg-oxine配合物插入蒙脱土的范德华间隙时荧光光谱相同，而Zn-oxine配合物插入蒙脱土间隙时荧光蓝移达12 nm。石墨-钾插层化合物KC_8可生成o-Ps。

Alkali-metal-saturation-doped fullerides M_6C_<60> (M=K, Rb, Cs) showed three positron lifetime components ; 0.21-0.24, 0.60-0.75, and 3.2-3.7 ns. The 1st component was assigned to arise from the free annihilation of positrons with electrons inside and around C_<60> molecules in the crystals, the 2nd one from the annihilation on the surfaces of the crystals, and the 3rd one from the annihilation through ortho-positronium (o-Ps). Pure C_<60> crystals showed only a single component of 0.427 ns. The substitution of Na^+ in the van der Waals gaps of montmorillonite with Al^<3+>, Zn^<2+>, Pb^<2+>, Cu^<2+>, Mg^<2+> was found to forminorganic interstitial compounds, and that with alkylammoniums to form the monmorillonites of which gaps are filled with long alkyl chains. The h parameters of Doppler-broadening spectra, 0.55-0,58 ; and the 2nd lifetime components, 1.12-1.74 ns, for these montmorillonites are found to have a good correlation with the values observed for their original alkylammonium salt crystals, which demonstrates that the positron annihilation occurs in the region of van der Waals gaps. Further incorporation of oxine into the inorganic interstitial compounds formed metal-oxine-complex-including montmorillonites. Al-oxine and Mg-oxine complexs showed the same fluorescence spectra when they were incorporated into the van der Waals gaps of montmorillonite, but Zn-oxine compex showed fluorescence blue shift of 12 nm when it was inserted into the gaps of montmorillonite. Graphite-potassium intercalation compound, KC_8, was found to generate o-Ps.