From owner-chemistry@ccl.net Sat Nov 5 16:00:00 2011 From: "Tymofii Nikolaienko tim_mail^^ukr.net" To: CCL Subject: CCL:G: assessment of Quantum tunnelling Message-Id: <-45832-111105155907-30398-2vasMp3RUHLwpnQKvALTKA,,server.ccl.net> X-Original-From: Tymofii Nikolaienko Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=windows-1251; format=flowed Date: Sat, 05 Nov 2011 21:58:58 +0200 MIME-Version: 1.0 Sent to CCL by: Tymofii Nikolaienko [tim_mail::ukr.net] Dear Eldar! I would highly recommend you the following paper "Parabolic Tunneling Calculations": Skodje R. T., Truhlar D. G. // J. Phys. Chem. – 1981. – 85. – P. 624-628. The "Tunneling in enzymatic and nonenzymatic hydrogen transfer reactions" [ J. Phys. Org. Chem. 2010, 23 660–676 ] might be also of interest. P.S. Feel free to contact me via tim_mail_._ukr.net directly as well. Best regards Tymofii 05.11.2011 20:58, Eldar Mamin Yeldar443^^mail.ru wrote: > Sent to CCL by: "Eldar Mamin" [Yeldar443.:.mail.ru] > Deat CCL community > > Can anyone help me to assess Quantum tunnelling effect > in my reaction - cycloaddition of ozone with double bond at room temperature > > the problem is that my value is too high about 4% of rate constant > with is senceless, it is too high. I use Wiegners formula =1+1/24(*h/kT)^2 > with (abaut 600cm^-1) taken >> from imaginary mode of freq-job from GAMESS or GAUSSIAN. Is it correct? >