RE: Multiconfiguration calculation in Gaussian03

Dear Ding Xunlei,
 Kindly check on the book
 "Modern Quantum Chemistry: Introduction to Advanced Electronic Structure
 Theory
 by Attila Szabo, Neil S. Ostlund - 1996"
 It will partly answer  the questions you've posed about multiconfiguration
 interactions, and then you can relate them to Gaussian03.
 Best Regards,
 Ojwang JGO
 -----Original Message-----
 From:	Computational Chemistry List on behalf of Ding Xunlei
 Sent:	Sun 6/26/2005 9:55 AM
 To:	cheMISTRY; chemistry-request; help
 Cc:
 Subject:	CCL:Multiconfiguration calculation in Gaussian03
 Dear Sir/Madam#:
 I want to do some Multiconfiguration calculations using G03.
 I want to know whether CISD, QCISD(T), CCSD(T) are multiconfiguration
 calculations?
 Is QCISD based on CISD?
 Is the precision of these method as below:
 CISD<QCISD<QCISD(T)<QCISD(T,E4T)~QCISD(TQ)   ?
     Thank you for your help!
 Yours sincerely,
 Ding Xunlei
 2005-06-26
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