The known binuclear complex [Pt2(µ-bpy-2H)(Me)2(DMSO)2], 1, in which bpy = 2,2'-bipyridine and DMSO = dimethyl sulfoxide, was reacted with 2 equiv bis(diphenylphosphino)methane, dppm, to give the new double rollover cycloplatinated(II) complex [Pt2(µ-bpy-2H)(Me)2(κ 1dppm)2], 2, in which each metallic center bears a monodentate dppm ligand. The reaction of 2 with 2 equiv of the known monomeric cycloplatinated (II) complex [Pt(Me)(bhq-H)(SMe2)], in which bhq = 7,8-benzo[h]quinoline, gave the new unsymmetrical tetranuclear complex [{(bhq-H)(Me)Pt(µ-dppm)Pt(Me)}2(µ-bpy-2H)], 3. The complexes were fully characterized using multinuclear (1 H and 31 P{ 1 H}) NMR spectroscopy and elemental analysis. Photophysical properties of the synthesized complexes were investigated and the results were confirmed by DFT calculations. The complexes 1-3 are brightly luminescent in solution and solid state. The complex 1 exhibits structured emission band, complying with the cyclometalated ligand being the centered emissive state. The complexes 2 and 3, however, exhibit unstructured emission bands, confirming a large amount of MLCT in their emissive states.