CCL: basis set erroneous concept

From: mohamed aish <mhmdaish(!)yahoo.com>
Subject: CCL: basis set erroneous concept
Date: Sat, 1 Dec 2007 03:35:34 -0800 (PST)

Hi All;

I am a new in computational chemistry field. Now, I am reading about the basis sets. There are something confused me and would be appreciative if anyone helps me to correct my erroneous concepts.

Suppose that we have a compound containing carbons with sp² and sp³ hybridization, for example CH₃CH=CH₂, and the basis set is 6-31G. Now my question is: 6-31G basis set for C_sp3 is similar to 6-31G basis set for C_sp2. Is this right??!! Please correct my concept.

Thanks a Lot

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