An ab initio study of the electronic and vibrational properties of pyrazine...HX...XH...pyrazine...HX hydrogen-bonded complexes(X=F, NC, Cl, CN and CCH) - Silva, João Bosco P. da; Silva Júnior, Mário R.; Ramos, Mozart N.; Galembeck, Sérgio Emanuel (Journal of Molecular Structure, 2005)