Téllez S CA, Hollauer E, Pais da Silva MI, Mondragón MA, Haiduc I, Curtui M. Density functional theory study of the Fourier transform infrared and Raman spectra of dichloro-bis(2,4-pentanedionate)tin(IV). Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 2001 May;57(6):1149–61. doi: 10.1016/s1386-1425(00)00457-1.