Q: Converting the internal coordinates to the normal coordinates

From: <JWANG : at : ac.dal.ca>
Subject: Q: Converting the internal coordinates to the normal coordinates
Date: Sat, 18 Mar 1995 22:29:25 -0400

 Dear Netters,
 I am looking for a code to calculate the matrix which converts the
 internal coordinates to the normal mode coordinates.  I can get the
 force constant matrix with respect to the internal coordinates, but
 I need a code to calculate the G matrix, which is necessary for the
 diagonization of the FG matrix.  From there I will be able to
 obtain the transformation matrix.
 Thanks in advance.
 Jian Wang