thumb|The geometry of cis-Dichlorobis(bipyridine)ruthenium(II). RuCl2(bpy)2 is an octahedral metal complex with two bidentate 2,2′-Bipyridine (bpy) ligands and two chloride ligands. +Neutral countingMetal/ligandElectrons contributedElectron countRu(0)d8 (8 d electrons)8 electronsbpy4 electrons x 28 electronsCl .1 electron x 22 electronsTotal = 18 electrons In the neutral counting method, the Ruthenium of the complex is treated as Ru(0). It has 8 d electrons to contribute to the electron count. The two bpy ligands are L-type ligand neutral ligands, thus contributing two electrons each. The two chloride ligands hallides and thus 1 electron donors, donating 1 electron each to the electron count. The total electron count of RuCl2(bpy)2 is 18. +Ionic countingmetal/ligandelectrons contributednumber of electronsRu(II)d6 (6 d electrons)6 electronsbpy4 electrons x 28 electronsCl−2 electrons x 24 electronsTotal = 18 electrons In the ionic counting method, the Ruthenium of the complex is treated as Ru(II). It has 6 d electrons to contribute to the electron count. The two bpy ligands are L-type ligand neutral ligands, thus contributing two electrons each. The two chloride ligands are anionic ligands, thus donating 2 electrons each to the electron count. The total electron count of RuCl2(bpy)2 is 18, agreeing with the result of neural counting.
thumb|the geometry of cis-dichlorobis(bipyridine)ruthenium(ii) rucl2(bpy)2 is an octahedral metal complex with two bidentate 22′-bipyridine (bpy) ligands and two chloride ligands +neutral countingmetal/ligandelectrons contributedelectron countru(0)d8 (8 d electrons)8 electronsbpy4 electrons x 28 electronscl 1 electron x 22 electronstotal = 18 electrons in the neutral counting method the ruthenium of the complex is treated as ru(0) it has 8 d electrons to contribute to the electron count the two bpy ligands are l-type ligand neutral ligands thus contributing two electrons each the two chloride ligands hallides and thus 1 electron donors donating 1 electron each to the electron count the total electron count of rucl2(bpy)2 is 18 +ionic countingmetal/ligandelectrons contributednumber of electronsru(ii)d6 (6 d electrons)6 electronsbpy4 electrons x 28 electronscl−2 electrons x 24 electronstotal = 18 electrons in the ionic counting method the ruthenium of the complex is treated as ru(ii) it has 6 d electrons to contribute to the electron count the two bpy ligands are l-type ligand neutral ligands thus contributing two electrons each the two chloride ligands are anionic ligands thus donating 2 electrons each to the electron count the total electron count of rucl2(bpy)2 is 18 agreeing with the result of neural counting