[1] Univ Siegen, D-57068 Siegen, Germany
[2] Ruhr Univ Bochum, Lehrstuhl Theoret Chem, D-44780 Bochum, Germany
[3] Adam Mickiewicz Univ, Dept Chem, Quantum Chem Grp, PL-60780 Poznan, Poland
[4] Poznan Supercomp & Networkign Ctr, PL-61712 Poznan, Poland