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Acta Cryst. (2012). E68, m1530
[ doi:10.1107/S1600536812047472 ]

Tris(thiocyanato-[kappa]N)tris(triphenylphosphine oxide-[kappa]O)europium(III)-(nitrato-[kappa]2O,O')bis(thiocyanato-[kappa]N)tris(triphenylphosphine oxide-[kappa]O)europium(III) (1/1)

A. T. Thames, F. D. White, L. N. Pham, K. R. Xiang and R. E. Sykora

Abstract: The title co-crystal, [Eu(NCS)3(C18H15OP)3][Eu(NCS)2(NO3)(C18H15OP)3], contains two distinct neutral complexes. Each complex has threefold symmetry about its central Eu3+ ion. As a result, the nitrate-containing molecule contains disorder of its bidentate nitrate and two N-bound thiocyanate anions, while the [Eu(NCS)3(OPPh3)3] complex is fully ordered. There is a weak [pi]-[pi] stacking interaction between the phenyl rings of the two molecules [centroid-centroid distance = 4.138 (4) Å].

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