&INFO isolated hydrogen molecule. using car-parrinello molecular dynamics with fixed atom positions to calculate the electron structure &END &CPMD MOLECULAR DYNAMICS CP ANNEALING ELECTRONS 0.90 MAXSTEP 200 EMASS 600.0 TIMESTEP 3.0 &END &SYSTEM SYMMETRY 1 ANGSTROM CELL 8.00 1.0 1.0 0.0 0.0 0.0 CUTOFF 70.0 &END &DFT FUNCTIONAL LDA &END &ATOMS CONSTRAINTS FIX ATOMS 2 1 2 END CONSTRAINTS *H_MT_LDA.psp LMAX=S 2 4.371 4.000 4.000 3.629 4.000 4.000 &END