Li+ cation coordination in [Li2(CF3SO3)2(diglyme)] and [Li3(C2F3O2)3(diglyme)]

The title compounds, poly[[[bis(2-methoxyethyl) ether]lithium(I)]-di-mu(3)-trifluoromethanesulfonato-lithium(I)], [Li-2 (CF3SO3)(2) (C6H14O3)](n), and poly[[[bis(2-methoxyethyl) ether]lithium(I)]-di-mu(3)-trifluoroacetato-dilithium(I)-mu(3)-trifluoroacetato], [Li-3 (C2F3O2)(3) (C6H14O3)](n), consist of one-dimensional polymer chains. Both structures contain five-coordinate Li+ cations coordinated by a tridentate diglyme [bis(2-methoxyethyl) ether] molecule and two O atoms, each from separate anions. In both structures, the [Li(diglyme)X-2](-) (X is CF3SO3 or CF3CO2) fragments are further connected by other Li+ cations and anions, creating one-dimensional chains. These connecting Li+ cations are coordinated by four separate anions in both compounds. The CF3SO3- and CF3CO2- anions, however, adopt different forms of cation coordination, resulting in differences in the connectivity of the structures and solvate stoichiometries.