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Acta Cryst. (2012). E68, m1531
[ doi:10.1107/S1600536812047289 ]

Tris(thiocyanato-[kappa]N)tris(triphenylphosphine oxide-[kappa]O)terbium(III)

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

Abstract: The title compound, [Tb(NCS)3(C18H15OP)3], contains a six-coordinate TbII cation surrounded by three O-bound triphenylphosphine oxide ligands and three N-bound thiocyanate ligands, each in a fac arrangement. There are two crystallographically unique TbIII atoms in the asymmetric unit. One TbIII atom resides on a threefold rotation axis, while the other has no imposed crystallographic symmetry. The thiocyanate ligands are bound through N atoms, illustrating the hard-hard bonding principles of metal complex chemistry.

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