MOPAC -reduced masses..

[martin[ AT ]biokth.sunet.SE (Martin Norin, Dept. Biochem., Royal Inst.]

Dear Netters,
 When doing force calculations with MOPAC one gets the reduced masses
 of the vibrations. To my knowledge the reduced mass for a diatomic is
 m1*m2/(m1+m2)
 However MOPAC reports a reduced mass of 0.65 and 0.59 for HCL and HI.
 Shouldn't they be close to 1 or is it some more complications to
 the reported masses ?
 Greetings,
 /martin
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 Martin Norin			tel:  +46-8-790 7512
 Dept. Biochem			fax:  +46-8-723 1890
 KTH				e-mail:  martin[ AT ]physchem.kth.se
 100 44 Stockholm
 Sweden
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