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46 BASIS SET EXTRAPOLATION 347<br />

***,h2o<br />

memory,32,m<br />

gthresh,energy=1.d-9<br />

basis=avtz<br />

r = 0.9572 ang, theta = 104.52<br />

geometry={<br />

O;<br />

H1,O,r;<br />

H2,O,r,H1,theta}<br />

hf<br />

multi<br />

mrci<br />

text,Compute energies, extrapolate reference energy using EX1 and correlation energy using L3;<br />

text,The Davidson corrected energy is also extraplated<br />

extrapolate,basis=avtz:avqz:av5z,method_c=l3,method_r=ex1,npc=2<br />

emc=energr<br />

ecorr_mrci=energy-emc<br />

ecorr_mrciq=energd-emc<br />

text,Extrapolate reference energy by EX1 and correlation energy by LH3<br />

text,The Davidson corrected energy is also extraplated<br />

extrapolate,basis=avtz:avqz:av5z,ecorr=ecorr_mrci,ecorrd=ecorr_mrciq,method_c=LH3,eref=emc,meth<br />

http:<br />

//www.molpro.net/info/current/examples/h2o_extrapolate_mrci.com

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