Different Rotamer States of Cytosine Nucleobases in Heteronuclear PtPd-, PtPd2, and Pt2Pd2Ag Complexes Derived from [Pt(2,2′-bpy)(1-MeC-N3)2]2+(1-MeC = 1-Methylcytosine): First Examples of Species with Head–Head Oriented 1-MeC–Ligands | Publicación