DNA binding of the anti-cancer platinum complex trans-[{Pt(NH3)2Cl}2�-dpzm]2+Electronic supplementary information (ESI) available: The 195Pt NMR spectra of di-Pt and di-Pt after reaction with guanosine and adenosine, the 1H NMR of di-Pt after reaction with adenosine and an expansion of 1H NOESY spectrum showing the aromatic H8/H6 to sugar H2?/H2? region of the oligonucleotide d(ATG*CAT)2 bound by di-Pt. See http://www.rsc.org/suppdata/dt/b3/b306417d/