[1] Univ Republica, Fac Quim, Catedra Quim Inorgan, Montevideo 11800, Uruguay
[2] Univ Navarra, CIFA, E-31080 Pamplona, Spain
[3] Univ Nacl La Plata, Fac Ciencias Exactas, Ctr Quim Inorgan CEQUINOR CONICET UNLP, RA-1900 La Plata, Argentina
[4] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560 Sao Carlos, SP, Brazil
[5] Univ Nacl La Plata, Fac Ciencias Exactas, Dept Fis, IFLP CONICET, RA-1900 La Plata, Argentina
[6] UNESP, Fac Ciencias Farmaceut, BR-14801902 Araraquara, SP, Brazil