Endohedrally palladium atom doped Si-60, Pd@Si-60 is compared with Si-60 mo
lecule structurally and quantum chemically by using ZINDO/1 (RHF) type semi
empirical approach. The results indicate that donor-acceptor type pi -inter
action between the Pd atom and Si-60 cage should occur, thus the dopant ato
m causes some geometry distortions and affects the molecular orbitals of Si
-60. (C) 2001 Elsevier Science B.V. All rights reserved.