From chemistry-request: at :server.ccl.net Tue Jan 18 18:15:48 2000 Received: from unicorn.it.wsu.edu (voleti -8 at 8- unicorn.it.wsu.edu [134.121.1.1]) by server.ccl.net (8.8.7/8.8.7) with ESMTP id SAA03010 for ; Tue, 18 Jan 2000 18:15:47 -0500 Received: from localhost (voleti-: at :-localhost) by unicorn.it.wsu.edu (8.9.3/8.9.3) with ESMTP id OAA30818 for ; Tue, 18 Jan 2000 14:11:40 -0800 (PST) Date: Tue, 18 Jan 2000 14:11:40 -0800 (PST) From: "sreedhara v. rao" X-Sender: voleti -x- at -x- unicorn.it.wsu.edu To: chemistry&$at$&ccl.net Subject: size consistency in solvents Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Dear CCL members, This question is regarding calculation of activation barrier in solvents for a bimolecular reaction and about a possible existance of size-consistency. Is it acceptable to calculate the energy differences of the transition state-in-solvent with respect to the sum of the energies of individual reactants-in-solvents? These bimolecular reactions are radical-molecule type reactions in gas-phase and the overall charge of the reaction is zero. Calculations are single-point SCRF PCM/MP2/6-31+G** for all reactants and the hydrogen-abstraction transition states Any reference, comment and/or suggestions are highly appreciated. Thank you, Sreedhara Dr. Sreedhara V Rao Dept. of Chem., WSU, Pullman, WA-99163. voleti -A_T- wsunix.wsu.edu or voleti -A_T- wsu.edu