Synthesis and structural studies of some [14]paracyclo-bis- (1,2)pyrazolium- and (1,3)imidazolium-phanes

1. Cabildo, P.
2. Sanz, D.
3. Claramunt, R.M.
4. Bourne, S.A.
5. Alkorta, I.
6. Elguero, J.