convergence fails during mp2 calculations


Gets Around
Hi,
I'm trying to run the following code but ending up saying "convergence failed !" and eventually calculation procedure crashes.
I'm not sure whether and how I should put some "maxiter" directive in the code. It would be very nice if you kindly give some view regarding how should I proceed in this scenario. And why can't I perform iteration beyond 40 steps ?
The code I'm using is as follows:
start dimer
geometry units angstrom
  #symmetry c1
  N 48.889 12.572 -1.755;H 48.772 11.993 -2.380;O 48.202 10.131 -3.296;C 47.510 9.140 -3.224
end

basis "ao basis"
  N library 6-311+g*
  H library 6-311+g*
  O library 6-311+g*
  C library 6-311+g*
  bqN library N 6-311+g*
  bqH library H 6-311+g*
  bqO library O 6-311+g*
  bqC library C 6-311+g*
end
mp2
  freeze atomic
end
bsse
 mon first 1 2
 mon second 3 4
end
task mp2 energy  

Forum Vet
...
basis "ao basis"
  * library 6-311+g*
  bqN library N 6-311+g*
  bqH library H 6-311+g*
  bqO library O 6-311+g*
  bqC library C 6-311+g*
end
scf
  direct
  maxiter 999
end
mp2
  freeze atomic
end
bsse
 mon first 1 2
 mon second 3 4
end
task mp2 energy

Gets Around
Thanks a lot. It resolved my issue. However raised a different set of error.


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