I am running a DFT calculation using Gaussian 05,,, but the output / log file shows the above mentioned statement. I tried with all possible changes which can be made in input file and checked the space b/w the lines and keywords, but unable to get the converged structure. Can any one help me to solve this convergence problem?

My Input file is like this..

%mem=2GB

# opt freq b3lyp/6-31g geom=connectivity

Title card

0 1

C -6.02619527 9.44527291 -0.71253003

C -4.97668356 9.89555985 -1.74430456

C -5.41433211 9.54127357 -3.18798470

C -7.65683239 10.03305367 -2.44048523

C -7.30718981 10.22873199 -0.96683834

H -5.27098963 9.94279746 -4.16774469

H -4.82659707 10.95398877 -1.66069636

H -6.20196164 8.40208993 -0.83104254

H -7.85894719 9.00324965 -2.64166873

H -7.13425811 11.26665372 -0.78372848

O -6.53256968 10.46693586 -3.22290224

O -5.56381472 9.69389357 0.61729905

O -8.36655799 9.76938263 -0.10288899

C -8.90267268 10.86635140 -2.79984380

H -8.71454864 11.90018067 -2.60784077

H -9.72858740 10.54498701 -2.20802438

O -9.20429830 10.68541419 -4.18551448

H -8.46665363 10.98542331 -4.71919452

H -9.17399192 10.26804893 -0.26957573

H -5.39756593 10.62148689 0.73301079

O -4.05417354 9.58839301 -3.16755348

O -3.70377791 9.16457303 -1.47569403

H -3.58492919 9.53697555 -3.89463091

H -2.87727273 9.25288215 -2.08709783

B -1.71685742 8.59334576 -4.26508851

O -2.97405212 9.47014766 -4.68353092

H -3.33306313 9.06071177 -5.47655795

O -0.37714720 8.54894999 -5.03191713

H 0.22561508 7.94829750 -4.59308374

O -2.00900133 9.22803064 -2.58256445

H -1.38453846 8.69191602 -2.08439557

O -2.24696092 7.14354050 -4.13098207

H -1.61273913 6.59985936 -3.63238399

H -2.36881319 6.77772795 -5.00860295

And output file terminates as....

End of file reading connectivity.

Error termination via Lnk1e in /usr/local/g09_b01/g09/l101.exe

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