Pure Appl. Chem., 1993, Vol. 65, No. 7, pp. 1521-1526
doi:10.1351/pac199365071521
Precursors of aza-macrocycles: Characterization of substituted phenanthrolines and related bases. Crystal and molecular structure of dichloro-d i-n-butyl(2,2',6,6'-bipyrimidine)tin(IV)
J. Costamagna, J. Canales, J. Vargas, M. Camalli, F. Caruso and E. Rivarola