Subject: TEOS

From: David Trunec <[email-masked]>
Date: Fri, 6 Mar 1998 16:10:08 +0100 (CET)

Dear CCLers,
I need to know the geometry of following molecules

tetraethoxysiloxan (TEOS)

                               C2H5
                                |
                                O
                                |
                     C2H5 - O - Si - O - C2H5
                                |
                                O
                                |
                               C2H5
                               
hexamethyldisiloxan (HMDSO)

                          CH3      CH3
                           |        |
                     CH3 - Si - O - Si - CH3
                           |        |
                          CH3      CH3

Are there some ab-initio studies of these molecules ? Any help
will be greatly appreciated.

                       Best regards,
                                      David Trunec
                                      
                                      Dr. David Trunec
                                      Dep. of Physical Electronics
                                      Faculty of Science, Masaryk University
                                      Brno, Czech Republic
                                      e-mail [email-masked]