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The current version of the SnB program is SnB v2.1. This version contains

  • new algorithmic options,
  • a user-friendly graphical user interface (GUI),
  • provisions for computing normalized structure-factor magnitudes via the GUI, and
  • molecular visualization and editing capabilities.
This version of SnB has been tuned to improve the performance of the critical structure determination routine. The program is available for a variety of platforms, including
  • SGI IRIX,
  • Compaq Alpha OSF,
  • Sun Solaris,
  • IBM AIX, and
  • Intel Linux.
It is also available for a variety of multiprocessing environments. Information regarding specific system requirements for installation can be found in the README file contained within the distributed tar files.

SnB v2.1 is distributed free to academic and other nonprofit users. Commercial users must pay a license fee of $2000 or the difference between $2000 and the fee previously paid for a version earlier than 2.0. Since development and support of SnB v1.5 has been phased out, v1.5 is now available to all users free of charge. Potential users of v1.5 are warned, however, that this version does not properly handle peaks that fall on special positions.

Begin the downloading procedure by choosing either
version 1.5 or 2.1:
SnB v1.5, all users
SnB v2.1, academic and other nonprofit users
SnB v2.1, commercial users