<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><pre>Hi Molpro-Users,</pre><pre> I study  the" BASIS SET EXTRAPOLATION" for the first time.when I run the input as follows,the process can't recognize the "ecbs".</pre><pre>***,ch3cl</pre><pre>memory,384,m;
!file,2,ch3ccl-single_point-test.wfu
basis=avtz;
rccl=1.8;
rch=1.1;
alpha=108.8;
geometry={Z;
          ang;
          c,
          Cl,c,rccl;
          h1,c,rch,Cl,alpha;
          h2,c,rch,Cl,alpha,h1,120;
          h3,c,rch,Cl,alpha,h2,120;}

proc cbs34
{hf;wf,26,1,0;}
{ccsd(t);}
extrapolate,basis=avtz:avqz
endproc
optg,variable=ecbs,proc=cbs34
freq,variable=ecbs,proc=cbs34
</pre><div><br></div><div>And the error message:</div><div>ERROR IN OPTVAR_VALUE: VARIABLE ECBS NOT FOUND</div><div><br></div><div>My version is 08.And the corresponding manual seems not introduce the following message.Any suggestion will be appreciated.</div><pre><pre><pre>Cheers,</pre><pre>-tao</pre></pre>
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