  Self-propelled chemically powered synthetic micron and nano-scale motors are
being intensively studied because of the wide range of potential applications
that exploit their directed motion. This paper considers even smaller
{\AA}ngstr\"om-size synthetic motors. Such very small motors in bulk solution
display effects arising from their self-propulsion. Recent experiments have
shown that small-molecule catalysts and single enzyme molecules exhibit
properties that have been attributed to their chemical activity. Molecular
dynamics is used to investigate the properties of very small
{\AA}ngstr\"om-size synthetic chemically powered sphere-dimer motors in a
simple atomic-like solvent confined between walls separated by distances of
tens of nanometers. Evidence for strong structural ordering of the motors
between the walls, which reflects the finite size of solvent molecules and
depends on solvent depletion forces, is provided. Dynamical properties, such as
average motor velocity, orientational relaxation, and mean square displacement,
are anisotropic and depend on the distance from the walls. This research
provides information needed for potential applications that use molecular-scale
motors in the complex confined geometries encountered in biology and the
laboratory.
