1. Department of Chemistry University of Texas at El Paso 500 West University Avenue El Paso TX 79968 USA
2. Florida State UniversityNational High Magnetic Field Laboratory 1800 East Paul Dirac Drive Tallahassee FL 32310 USA
3. Departament de Química Física i InorgànicaUniversitat Rovira i Virgili, C/Marcel⋅lí Domingo 1 ES-43007 Tarragona, Catalonia Spain