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6 votes
1 answer
343 views

Explicit Examples for Unrestricted Hartree Fock Calculations

I am currently working on writing a Hartree Fock program in C++, currently using the STO-3G basis set. My program works well for the restricted case, but I am running into some issues with the ...
frobenius's user avatar
  • 313
5 votes
2 answers
127 views

Explicit form of Hartree Fock analytic gradient with contracted GTOs? With or without density fitting

Does anyone know of a paper, textbook, or other resource which outlines the expression for the analytic gradient of the HF energy (restricted or otherwise) in terms of Dunning's contracted Gaussian-...
Rob L's user avatar
  • 71