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The solid state structure of [Ru(Phtpy)(2)][PF6](2)center dot 4MeCN has been determined (Phtpy = 4`-phenyl-2,2`:6`,2 ``-terpyridine); [Ru(Phtpy)(2)](2+) cations pack into sheets by virtue of M(tpy)(2)(2) embraces, and the MeCN solvent molecules are involved in N center dot center dot center dot H-C interactions which prevent the efficient packing of adjacent sheets. Comparisons with related structures lead to some generalizations about packing motifs in salts containing [M(Phtpy)(2)](2+) or [M(pytpy)(2)](2+) cations (pytpy = 4`-pyridyl-2,2`:6`,2 ``-terpyridine).