About ROHF coupling oefficient



 Dear Netters,
      I am doing some Ab initio calculation on Transition metal compounds. Which
 coupling coefficients should I used so that ROHF converge? I am now working on
 a heptet ground state and using Roothaan single matrix set of coefficient. It
 does not onverge, any suggestion?
 Thanks in advance !!!
 K.W.Mok
 Email:h8714031 : at : hkuxa.hku.hk
 Chem.Dept. University of Hong Kong