Semiempirical molecular orbital calculations at the level of AM1 type were
performed on hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) and certain RDX-
embedded cyclophane derivatives. It has been found that through-space inter
action between the RDX and phane moieties play an important role in the var
ious molecular orbital properties of the systems considered. (C) 2000 Elsev
ier Science B.V. All rights reserved.