From owner-chemistry -x- at -x- ccl.net Thu Sep 21 02:17:01 2017 From: "Mozhdeh Mohammadpour Mozhdehmohammadpour_._gmail.com" To: CCL Subject: CCL: translational and rotational mode frequencies Message-Id: <-53011-170921021617-8621-hnIkpUqygxwW/i6XGG5qGg(!)server.ccl.net> X-Original-From: "Mozhdeh Mohammadpour" Date: Thu, 21 Sep 2017 02:16:15 -0400 Sent to CCL by: "Mozhdeh Mohammadpour" [Mozhdehmohammadpour .. gmail.com] Dear CCLers Recently I encounter a paper with a table reporting translational and rotational in addition with vibrational frequencies, since they need these frequencies to construct partition functions. Actually there were no clues on using solid state calculations and just reported some abinitio calculations for a finite molecular cluster interacting with H2. I wonder how could be possible to calculate translational and rotational mode frequencies from first principle calculations? Thanks in advance, Mozhdeh P.S. the table I mentioned above is like this: Functional omega(H2 X) cm-1 PBE0 208, 224, 275, 145, 617, 4200 mozhdehmohammadpour _ gmail.com