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                                     Bert  Forum:Admin, Forum:Mod, NWChemDeveloper, bureaucrat, sysop
                                    
                                  
 
                                 
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                 Forum Vet 
                
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		                        | 8:08:36 AM PDT - Wed, Jul 10th 2013  | 
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		                    CCSD convergence level
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		                        So, your correlation energy is converged to at least 7 digits. I don't think you need that many for CBS fitting. Just as a reference, convergence to 0.0001 Hartree is less than 0.1 kcal/mol. Your convergence gives you a convergence error of at most 0.0001 kcal/mol. Hence, don't think you need that high a level of convergence. 
 
Bert
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