Dear Molpro users,<div><br></div><div>I'm doing CCSD(T) calculations of some transition metal complexes, using both RCCSD and UCCSD.</div><div>I notice that in some molecules, the total energy of RCCSD is lower than UCCSD (by 0.3 kJ/mol).</div>
<div>Is it normal? Since in other similar complexes, UCCSD energy is lower than RCCSD by at least 4 kJ/mol.</div><div>I am wondering if CCSD is trapped in a local minimum? </div><div><br></div><div>Best regards,</div><div>
Quan</div>