From chemistry-request@server.ccl.net Mon Sep 11 13:35:52 2000 Received: from ne059.cm.utexas.edu (ne059.cm.utexas.edu [146.6.145.59]) by server.ccl.net (8.8.7/8.8.7) with ESMTP id NAA31525 for ; Mon, 11 Sep 2000 13:35:51 -0400 Received: from eeyore.cm.utexas.edu (ne057.cm.utexas.edu [146.6.145.57]) by ne059.cm.utexas.edu (8.10.2/8.10.2) with ESMTP id e8BHMA510566; Mon, 11 Sep 2000 12:22:10 -0500 Message-ID: <39BD30E5.D6BC4D5C@eeyore.cm.utexas.edu> Date: Mon, 11 Sep 2000 12:22:13 -0700 From: "Isaac B. Bersuker" X-Mailer: Mozilla 4.7 [en] (WinNT; I) X-Accept-Language: en MIME-Version: 1.0 To: "Paulo E. Abreu" CC: "Isaac B. Bersuker" , chemistry@ccl.net Subject: Re: CCL:HYBRIDIZATION NOT "REAL";V. FOCK References: <39BC0884.4ADBB8E@trentu.ca> <39BD05DE.2A4DFC2C@eeyore.cm.utexas.edu> <39BCF8F6.F79F85FD@qta.qui.uc.pt> <39BD2513.9E11C49E@eeyore.cm.utexas.edu> <39BD0F25.AA9F5F67@qta.qui.uc.pt> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Hybridization is present in any theory (VB, MO, etc.), it reflects the redistribution of charge by bonding (the mixing of orbitals of different symmetry takes place under the influence of the bonding field). Sorry, I cannot continue this discussion until you read the basics that I cannot repeat here... Regards I. B. "Paulo E. Abreu" wrote: > "Isaac B. Bersuker" wrote: > > > Yes, you can: hybridization changes the charge distribution which is, in principle > > observable > > Sorry to disagree (again) with you but I dont think that is a correct answer. Bonding > changes the charge > distribution not hybridization. Besides what do you mean by changing the charge > distribution ? > Comparing it with to the free atoms ? Orbital are models, and within these models we > can describe > chemical bonding with various approaches (MO or VB). Hybridization is only used in VB > theory, because > in MO the symmetry of the molecule plays an important role in determining the > coefficients of the orbitals. > Remember that to use hybrid-orbitals you must a priori know the geometry of the > molecule. > Paulo E. Abreu > > -- > Departamento de Quimica e-mail:qtabreu@ci.uc.pt > Universidade de Coimbra TEL:351 239 852080 > 3049 Coimbra Codex FAX:351 239 827703 > Portugal -- Dr. Isaac B. Bersuker Institute for Theoretical Chemistry Department of Chemistry & Biochemistry The University of Texas at Austin Austin, TX 78712, USA Ph: (512) 471-4671 Fax: (512) 471-8696 Email: bersuker@eeyore.cm.utexas.edu